Fluid valve and fluid supply system

Abstract

The utility model discloses a fluid valve. The fluid valve comprises a valve body; an elastic device; the valve element is arranged on the valve body in a sliding mode in the fluid flowing direction, an elastic device is arranged between the valve element and the valve body, a pressed face is formed on the liquid inlet side of the valve element, and the stress of the pressed face is opposite to the acting force of the elastic device on the valve element. When the valve element slides relative to the valve body in the direction in which a valve port formed between the valve element and the valve body becomes smaller, the elastic deformation amount of the elastic device is increased. And the sound monitoring device is used for identifying vibration sound generated by the valve core in a preset flow range. When the flow reaches the preset flow, the valve element and the elastic device form simple harmonic vibration, when the flow reaches the preset flow, the valve element can generate corresponding vibration sound, meanwhile, the vibration sound is monitored by the sound monitoring device, the flow monitoring effect is achieved, and therefore the fluid valve can effectively solve the problem that an existing fluid valve is poor in flow monitoring effect. The utility model further discloses a fluid supply system comprising the fluid valve.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid systems, and more specifically, to a fluid valve, and also to a fluid supply system comprising the fluid valve. Background Art

[0002] In industrial practices across many fields, including aerospace, electronic information technology, transportation equipment manufacturing, new energy applications, rail transit air-conditioning systems, central temperature control facilities, energy storage temperature control solutions, liquid cooling and electronic heat dissipation, cabinet air-conditioning devices, data center integration services, cold chain temperature control technology, and indoor air quality control, hydraulic valves play a vital role as key components. Their core function is to accurately control the flow and pressure of the fluid, thereby achieving fine temperature management to meet the specific needs of various industries.

[0003] Flow measurement, in the field of hydraulic systems and liquid transmission, is considered a core element to ensure stable system operation and optimized performance. Traditionally, technologies such as orifice plates, vortex streets, turbines, electromagnetics, rotors, ultrasonics, and elliptical gear flowmeters can provide basic measurement accuracy, but each is limited by specific conditions. For example, some flowmeters require the fluid to have specific properties, such as conductivity and purity; others may reduce the fluid transmission efficiency due to significant pressure drops during the measurement process. In addition, these devices are often complex in structure and expensive. When faced with corrosive, conductive, or high-viscosity fluids, the applicability of existing flowmeters is limited, which may lead to measurement inaccuracies or hardware damage.

[0004] In the process of realizing the invention of the present utility model, the inventors discovered that there are at least the following problems in the prior art: the current fluid valve flow monitoring effect is not good. Utility Model Content

[0005] In view of this, the first purpose of the present invention is to provide a fluid valve, which can effectively solve the problem of poor flow monitoring effect of current fluid valves. The second purpose of the present invention is to provide a fluid supply system including the above-mentioned fluid valve.

[0006] In order to achieve the above first purpose, the present invention provides the following technical solutions:

[0007] A fluid valve comprising:

[0008] Valve body;

[0009] elastic device;

[0010] a valve core slidably disposed on the valve body along a fluid flow direction, an elastic device being disposed between the valve core and the valve body, a pressure surface being formed on a liquid inlet side of the valve core, and a force acting on the pressure surface being opposite to a force exerted by the elastic device on the valve core, and an elastic deformation of the elastic device increasing when the valve core slides relative to the valve body in a direction that reduces a valve opening formed therebetween;

[0011] A sound monitoring device is used to identify the vibration sound generated by the valve core within a predetermined flow range.

[0012] When in use, first select a fluid valve that meets the preset vibration requirements in terms of valve core quality, elastic coefficient of elastic device, etc. according to the monitored flow range, so that when the fluid reaches the preset flow range, a corresponding vibration sound is generated. Then the sound monitoring device monitors the valve core of the fluid valve, mainly monitoring whether there is a corresponding vibration sound at the valve core. If the flow reaches the preset flow, the sound monitoring device can now monitor the corresponding vibration sound, which facilitates the subsequent further judgment of whether the flow reaches the preset flow. In the above-mentioned fluid valve, the valve core is impacted by the fluid and the impact direction is opposite to the action direction of the elastic device, so that a simple harmonic vibration is formed. When the flow reaches the preset flow, the designed vibration frequency and / or vibration amplitude is formed, and the valve core will generate a corresponding vibration sound. At the same time, the vibration sound is detected by the sound monitoring device to monitor whether the preset flow is reached on the inlet side of the fluid valve. This achieves the effect of monitoring the flow, and the structure is simple. In summary, the above-mentioned fluid valve can effectively solve the problem of poor flow monitoring effect of the current fluid valve.

[0013] In some technical solutions, a controller is further included, which is connected to the sound monitoring device to obtain the vibration sound signal obtained by the sound monitoring device. The controller can obtain the sound pressure and / or frequency based on the vibration sound signal, and can obtain the flow rate based on the sound pressure and / or the frequency.

[0014] In some technical solutions, the valve body is provided with a first limiting structure to prevent the valve core from continuing to move when the valve core moves to the preset maximum opening and the valve port opens to the preset maximum opening, and the elastic device is in an elastically deformed state.

[0015] In some technical solutions, the valve body is provided with a second limiting structure to prevent the valve core from continuing to move when the valve core moves to the preset minimum opening and abuts against the valve core.

[0016] In some technical solutions, the pressure surface is stepped.

[0017] In some technical solutions, the valve body includes a circulation cavity and a valve flap located at the center of the circulation cavity. The valve core is slidably installed in the circulation cavity. A through valve hole is formed in the middle of the valve core. When the valve core moves to the point where the valve port is located at the preset minimum opening, the valve flap extends into the valve hole; when the valve core moves to the point where the valve port is located at the preset maximum opening, the valve flap disengages from the valve hole.

[0018] In some technical solutions, the end of the valve disc facing the fluid forms an arc convex surface; the end of the valve hole facing the fluid forms an arc chamfered structure along the hole edge.

[0019] In some technical solutions, the valve core includes a limiting protrusion, and the first limiting structure and the second limiting structure are both limiting shoulders, which are used to limit the limiting protrusion in opposite directions respectively.

[0020] In some technical solutions, the valve core has an inner shoulder surface facing opposite to the pressure surface, the elastic device is a compression elastic device, and one end penetrates into the valve core to abut against the inner shoulder surface, and the other end abuts against the valve body.

[0021] In some technical solutions, the valve core is cylindrical, and the inner wall has an annular inner protrusion, and the valve hole is formed by the annular inner protrusion; along the direction of fluid flow, the rear end of the annular inner protrusion is staggered with the rear end face of the valve core and together constitute the pressure surface, and the front end of the annular inner protrusion is staggered with the front end face of the valve core to form the inner shoulder surface; the annular limiting protrusion is formed on the outer wall of the valve core.

[0022] To achieve the second objective, the present invention further provides a fluid supply system comprising any of the aforementioned fluid valves, a filter, a pressure vessel, a drive pump, a heat exchange device, and a heater, arranged sequentially along the fluid flow direction, the fluid valve being disposed on the inlet side of the filter. Since the aforementioned fluid valve has the aforementioned technical effects, a fluid supply system incorporating the fluid valve should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 these drawings without paying any creative work.

[0024] Figure 1 A schematic side view of the structure of a fluid valve provided in an embodiment of the present utility model;

[0025] Figure 2for Figure 1 A schematic diagram of the cross-sectional structure of the intermediate fluid valve taken along the AA direction when the valve core is in the first position;

[0026] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the intermediate fluid valve taken along the AA direction when the valve core is in the second position;

[0027] Figure 4 A schematic diagram of the cross-sectional structure of a valve body provided in an embodiment of the present utility model;

[0028] Figure 5 A three-dimensional schematic diagram of a valve body provided in an embodiment of the present utility model;

[0029] Figure 6 A schematic cross-sectional view of a valve core according to an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the rear side of the valve core provided in an embodiment of the present utility model;

[0031] Figure 8 A three-dimensional schematic diagram of a fluid valve provided in an embodiment of the present utility model;

[0032] Figure 9 A schematic diagram of the connection of the fluid supply system provided in an embodiment of the present utility model.

[0033] The following are marked in the accompanying drawings:

[0034] Fluid valve 100, filter 200, pressure vessel 300, drive pump 400, heat exchange device 500, heater 600, compressor 700, condenser 800;

[0035] Valve body 1, elastic device 2, valve core 3, sound monitoring device 4, valve port 5;

[0036] Valve body 11, annular end cover 12, valve disc 13, connecting rod 14, inner convex structure 15, cross rod 16, flow cavity 17, first matching hole 111, second matching hole 112, third matching hole 113, second limiting structure 114, first limiting structure 121, arc convex surface 131;

[0037] Pressure surface 31 , first hole section 32 , second hole section 33 , limiting protrusion 34 , inner shoulder surface 35 , annular inner protrusion 36 , outer cylinder wall 37 , valve hole 361 , arc chamfer structure 362 . DETAILED DESCRIPTION

[0038] The embodiment of the utility model discloses a fluid valve, which effectively solves the problem that the flow monitoring effect of the current fluid valve is poor.

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1-9 , Figure 1 A schematic side view of the structure of a fluid valve provided in an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the intermediate fluid valve taken along the AA direction when the valve core is in the first position; Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the intermediate fluid valve taken along the AA direction when the valve core is in the second position; Figure 4 A schematic diagram of the cross-sectional structure of a valve body provided in an embodiment of the present utility model; Figure 5 A three-dimensional schematic diagram of a valve body provided in an embodiment of the present utility model; Figure 6 A schematic cross-sectional view of a valve core according to an embodiment of the present invention; Figure 7 A schematic diagram of the rear side of the valve core provided in an embodiment of the present utility model; Figure 8 A three-dimensional schematic diagram of a fluid valve provided in an embodiment of the present utility model; Figure 9 A schematic diagram of the connection of the fluid supply system provided in an embodiment of the present utility model.

[0041] In some embodiments, a fluid valve 100 is provided, which may be a hydraulic valve or a fluid valve 100. Specifically, the fluid valve includes a valve body 1, an elastic device 2, a valve core 3, and a sound monitoring device 4. It should be noted that, to better illustrate the structural relationships of this application, the direction of fluid flow is considered forward, and the opposite direction is considered backward. When the fluid flows in a curved path, the forward direction is considered the direction of the fluid flow path.

[0042] The valve core 3 is slidably mounted within the valve body 1 along the direction of fluid flow. A valve port 5 is formed between the valve core 3 and the valve body 1. The valve core 3 slides relative to the valve body 1 along the direction of fluid flow to adjust the size of the valve port 5. The size of the valve port 5 is generally measured by its opening. In a fluid valve, when the valve core 3 slides relative to the valve body 1 in the direction of fluid flow to a first position, the valve port 5 is open, typically at its maximum opening. When the valve core 3 slides relative to the valve body 1 in the direction of fluid flow to a second position, the valve port 5 is at its minimum opening, typically at its minimum opening. Therefore, it can be considered closed (not fully closed), but fluid can still pass through. The movement of the valve core 3 from the first position to the second position is generally in the direction of fluid flow, while the movement of the valve core 3 from the second position to the first position is generally against the direction of fluid flow. Generally, when the valve core 3 slides relative to the valve body 1 in the direction of fluid flow to reduce the valve port 5, it is sliding in the direction of fluid flow.

[0043] An elastic device 2 is disposed between the valve core 3 and the valve body 1. As the valve core 3 slides relative to the valve body 1 in a direction that reduces the valve opening 5 formed therebetween, the elastic deformation of the elastic device 2 increases. Specifically, as the valve core 3 slides relative to the valve body 1 in the direction of fluid flow to reduce the valve opening 5, the elastic device 2 prevents the valve core 3 from moving in that direction. As the valve core 3 moves toward reducing the valve opening 5, the elastic device 2 gradually accumulates energy. The elastic device 2 can be a compression elastic device, in which case the elastic device 2 is gradually compressed, resulting in compression deformation, as the valve core 3 moves toward reducing the valve opening 5. Alternatively, the elastic device 2 can be a tension elastic device, in which case the elastic device 2 is gradually stretched, resulting in tension deformation, as the valve core 3 moves toward reducing the valve opening 5.

[0044] The fluid-inlet side of the valve core 3 forms a pressure-bearing surface 31. This side, also known as the fluid-facing side, faces in the opposite direction of fluid flow, causing the fluid to impact the pressure-bearing surface 31 and experience pressure. Furthermore, the force applied to the pressure-bearing surface 31 is opposite to the force exerted by the elastic device 2 on the valve core 3. The force applied to the pressure-bearing surface 31, i.e., the impact force of the fluid flow, is in the same direction as the fluid flow, while the force exerted by the elastic device 2 on the valve core 3 is in the opposite direction of the fluid flow, preventing the valve core 3 from sliding in the direction of the fluid flow.

[0045] This means that when the fluid exerts a significant force on the pressure-bearing surface 31 during use, it drives the valve core 3 to move, causing the elastic device 2 to deform elastically. This creates a simple harmonic vibration between the valve core 3 and the elastic device 2. Research has found that, at a certain vibration frequency, a noticeable vibration sound can be heard from the valve core 3. This vibration sound can occur in at least two ways: one is when the frequency of the simple harmonic vibration coincides with the natural frequency of the valve core 3, generating a sound; the other is when the frequency of the simple harmonic vibration reaches a certain range, causing the friction sound between the valve core 3 and the valve body 1 to increase to a recognizable level, or the sound generated by the interaction between the valve core 3 and the fluid to increase to a recognizable level. This vibration sound changes with changes in fluid flow, such as changes in amplitude and / or frequency, with frequency changes generally being used as the identification factor. At a preset flow rate, achieving the designed vibration frequency and / or amplitude can be achieved by adjusting the mass of the valve core 3 and the elastic modulus of the elastic device 2 accordingly. Therefore, by changing the mass of the valve core 3 and / or the elastic coefficient of the elastic device 2, the amplitude and / or frequency of the simple harmonic oscillation can reach a preset value when the preset flow rate is set, so that it can be recognized by a sound monitoring device or the human ear. When monitoring whether the fluid has reached the preset flow rate, a corresponding sound will be generated when the fluid reaches the preset flow rate, and the corresponding sound can be recognized. Therefore, when the corresponding sound is recognized, it means that the fluid has reached the preset flow rate. It should be noted that the vibration sound is generated at the valve core 3, but it is not necessarily emitted by the valve core 3. It may also be the fluid at the valve core 3, or the corresponding part of the valve body 1 at the valve core 3.

[0046] In some embodiments, a sound monitoring device 4 may be further provided to identify the vibration sound generated by the valve core 3 within a predetermined flow range, that is, when the flow at the valve core 3 reaches a preset flow rate, a corresponding vibration sound is generated, and this vibration sound can be detected by the sound monitoring device, so that when the sound monitoring device detects the corresponding vibration sound, it indicates that the flow at the valve core 3 has reached the preset flow rate, thereby completing the monitoring. The sound monitoring device 4 may specifically be a sound sensor.

[0047] In some embodiments, when in use, first select a fluid valve whose valve core 3 mass, elastic coefficient of elastic device 2, etc. meet the preset vibration requirements based on the monitored flow range, so that when the fluid reaches the preset flow range, a corresponding vibration sound is generated. Then the sound monitoring device monitors the valve core 3 of the fluid valve, mainly monitoring whether there is a corresponding vibration sound at the valve core 3. If the flow reaches the preset flow, the sound monitoring device can detect the corresponding vibration sound, which facilitates the subsequent further judgment of whether the flow reaches the preset flow. In the above-mentioned fluid valve, the valve core 3 is impacted by the fluid and the impact direction is opposite to the action direction of the elastic device 2, so that a simple harmonic vibration is formed. When the flow reaches the preset flow, the designed vibration frequency and / or vibration amplitude is formed, and the valve core 3 will generate a corresponding vibration sound. At the same time, the vibration sound is detected by the sound monitoring device to monitor whether the preset flow is reached on the inlet side of the fluid valve. This achieves the effect of monitoring the flow rate, and the structure is simple. In summary, the above-mentioned fluid valve can effectively solve the problem of poor flow monitoring effect of current fluid valves.

[0048] In some embodiments, a controller is further included, wherein the controller is connected to the sound monitoring device 4 to obtain the vibration sound signal obtained by the sound monitoring device 4, and the controller can obtain the sound pressure and / or frequency according to the vibration sound signal, and can obtain the flow rate according to the sound pressure and / or frequency.

[0049] In some embodiments, the signal processing steps are as follows: a sound signal acquisition step, in which the sound source signal is collected using the sound monitoring device 4; a signal preprocessing step, in which the controller performs filtering and noise reduction on the collected sound signal to reduce environmental interference; a Fourier transform step, in which the controller performs a Fourier transform on the preprocessed sound signal to obtain a spectrum; a spectrum analysis step, in which the controller extracts sound pressure and frequency information from the spectrum; and a flow calculation step, in which the controller calculates the real-time flow rate based on the sound pressure and frequency. Of course, other methods can also be used to process the detected sound signal to obtain the final result. Through the above steps, real-time monitoring of fluid flow can be achieved, ensuring safe and stable operation of the system.

[0050] In some embodiments, the valve body 1 is provided with a first limiting structure 121, so that when the valve core 3 moves to the valve port 5 and opens to a preset maximum opening, it abuts against the valve core 3 to prevent the valve core 3 from continuing to move in the opposite direction of the fluid flow direction, and the elastic device 2 is in an elastically deformed state. When the elastic device 2 pushes the valve core 3 to slide in the direction of the fluid flow, that is, to slide in the direction of the increase of the valve port 5, when it moves to the above-mentioned first position or exceeds the first position, the valve core 3 is limited by the first limiting structure 121 and cannot continue to move, so as to maintain the current position state. At this time, the elastic device 2 can reach a natural expansion state or not. The former can better realize simple harmonic vibration, and the latter can realize pre-tightening to prevent the valve core 3 from sliding at will.

[0051] In some embodiments, the valve body 1 is provided with a second limiting structure 114 to prevent further movement of the valve core 3 when the valve core 3 moves to the predetermined minimum opening of the valve port 5 and contacts the valve core 3. At this point, the elastic device 2 preferably has not yet reached its maximum deformation. The second limiting structure 114 prevents the elastic device 2 from reaching its maximum deformation, thereby better protecting the elastic device 2.

[0052] It should be noted that, for the first limiting structure 121 and the second limiting structure 114, either a limiting shoulder or a limiting protrusion 34 can be used, and the specific limiting method can be set accordingly as needed.

[0053] In some embodiments, the pressure surface 31 can be stepped, that is, the pressure surface 31 is not located on the same cross-section, but is staggered in the direction of fluid flow, so as to be staggered in the direction of fluid flow, so that the radial component of the pressure surface 31 can be dispersed and distributed, so as to offset each other and make the valve core 3 slide more smoothly.

[0054] In some embodiments, the valve body 1 can include a circulation chamber 17 and a valve flap 13 located at the center of the circulation chamber 17, wherein the valve core 3 is slidably installed in the circulation chamber 17, that is, it can slide relative to the valve body 1 in the direction of fluid flow. A through valve hole 361 is formed in the middle of the valve core 3, and when the valve core 3 moves to the valve port 5 at the preset minimum opening, the valve flap 13 extends into the valve hole 361, and a small gap is formed between the two. When the valve core 3 moves to the valve port 5 at the preset maximum opening, the valve flap 13 disengages from the valve hole 361, and the relative position of the valve flap 13 relative to the valve hole 361 in the direction of fluid flow is adjusted, so that the valve port 5 changes. This change method is relatively simple and easy to operate. Of course, it can also be set in reverse. In this case, the valve body 1 is provided with the valve hole 361, and the valve flap 13 is integrated into the valve core 3 device.

[0055] In some embodiments, an arc convex surface 131 is formed on one end of the valve flap 13 facing the fluid, that is, an arc convex surface 131 is formed on the liquid inlet side of the valve flap 13 to face the fluid and facilitate drainage of the fluid.

[0056] In some embodiments, a circular chamfered structure 362 can be formed on the edge of the valve hole 361 facing the fluid inlet, that is, on the liquid inlet side of the valve hole 361, the edge of the hole forms a circular chamfered structure 362 to guide the fluid to flow into the hole.

[0057] In some embodiments, the fluid outlet end hole of the valve hole 361 may also be formed into a trumpet-shaped structure, that is, gradually expanded along the fluid flow direction to match the arc convex surface 131 .

[0058] In some embodiments, the valve core 3 may include a limiting protrusion 34 , and the first limiting structure 121 and the second limiting structure 114 are both limiting shoulders, which are used to limit the limiting protrusion 34 in opposite directions, so that the limiting is convenient and simple.

[0059] In some embodiments, the valve core 3 can have an inner shoulder surface 35 facing opposite to the pressure surface 31, and the elastic device 2 is a compression elastic device 2, with one end penetrating into the valve core 3 to abut against the inner shoulder surface 35, and the other end abutting against the valve body 1, so as to extend into the valve core 3 through the elastic device 2, which can better extend the elastic device 2 so that the elastic device 2 has a larger deformation range, and at the same time can better reduce the size of the valve body 1 in the fluid flow direction.

[0060] In some embodiments, the valve core 3 can further be cylindrical and have an annular inner protrusion 36 on its inner wall. The annular inner protrusion 36 forms a valve hole 361, and the annular inner protrusion 36 is generally located in the middle. Along the direction of fluid flow, the rear end of the annular inner protrusion 36 is offset from the rear end surface of the valve core 3, and together they form the pressure-bearing surface 31. Specifically, the rear end of the annular inner protrusion 36 is located in front of the rear end surface of the valve core 3. The front end of the annular inner protrusion 36 is offset from the front end surface of the valve core 3 to form an inner shoulder surface 35. Specifically, the front end of the annular inner protrusion 36 is located behind the front end surface of the valve core 3. Thus, within the valve core 3, along the direction of fluid flow, a first hole section 32, the valve hole 361, and a second hole end are formed. The elastic device 2 is inserted into the second hole section 33, abutting against the inner end surface. The rear end of the annular inner protrusion 36 is offset from the rear end surface of the valve core 3, forming a stepped structure. This offset arrangement forms the first hole section 32. Generally speaking, the inner diameters of the first hole section 32 and the second hole section 33 are both larger than the inner diameter of the valve hole 361. Generally speaking, the inner diameter of the first hole section 32 is smaller than the second hole section 33, so that the opening of the valve port 5 can reach the maximum.

[0061] An annular limiting protrusion 34 is formed on the outer wall of the valve core 3. The limiting protrusion 34 is preferably located outside the inlet end of the valve core 3. That is, the outer diameter of the limiting protrusion 34 is larger than the outer diameter of the outer wall of the valve core 3. Generally, the span of the limiting protrusion 34 in the flow direction is relatively small, even smaller than the span of the first hole section 32. It should be noted that although some parts use "outer diameter" and "inner diameter", they mainly represent the transverse dimensions and do not necessarily mean a circular structure. Other structures are also possible. Generally speaking, a circular structure can be used in the corresponding positions.

[0062] The valve body 1 includes a valve body 11 and an annular end cap 12. The valve body 11 is provided with a first mating hole 111, a second mating hole 112, and a third mating hole 113, sequentially arranged along the direction of fluid flow. The annular end cap 12 is embedded in the first mating hole 111, and generally, their dimensions are consistent and aligned in the direction of fluid flow. The inner diameter of the annular end cap 12 is smaller than that of the second mating hole 112. In this case, the portion of the annular end cap 12 protruding from the second mating hole 112 on the front side constitutes a first retaining structure 121. The outer diameter of the second mating hole 112 matches the outer diameter of the retaining protrusion 34, and the diameter of the third mating hole 113 is smaller than that of the second mating hole 112, forming a second retaining structure 114 at the junction. The outer cylindrical wall 37 of the valve core 3 is provided in conjunction with the third mating hole 113. The front end of the third mating hole 113 forms an inner convex structure 15, with one end of the elastic device 2 abutting against the inner convex structure 15 and the other end abutting against the inner shoulder surface 35. The front side of the valve flap 13 has a connecting rod portion 14 extending forward. The front end of the connecting rod portion 14 is connected to the inner convex structure 15 through two or more cross rod portions 16, wherein the connecting rod portion 14 and the cross rod portion 16 are both flat rods, and the flat and narrow directions are consistent. The valve flap 13, the connecting rod portion 14, the cross rod portion 16 and the valve body 11 are integrally formed and connected. During assembly, the valve core 3 is installed from the rear end of the valve body 11, and then installed into the annular end cover 12 and into the first matching hole 111. The first matching hole 111, the second matching hole 112, and the third matching hole 113 are preferably all cylindrical holes.

[0063] In some embodiments, the hydraulic valve's switching design covers the full range to accommodate varying operating conditions. The flow detection function is based on a carefully designed flow detection range, designed to ensure the valve operates within safe operating parameters. The flow detection range is set to equal the allowable safe operating flow rate, Q. When the fluid flow exceeds the designed safe operating fluid threshold, i.e., Q>Qmax, the valve core 3 is stimulated by the fluid and produces high-frequency vibrations, which are accompanied by sound. At this point, the flow detection system is able to identify a signal exceeding the designed threshold, i.e., Q>Qmax.

[0064] The vibration of the valve core 3 is caused by fluid dynamics. When the vibration reaches the designed flow detection threshold, the sound generated by the high-frequency vibration of the valve core 3 can be used as a flow monitoring signal. Specifically, the directly detected vibration sound signal can be subjected to spectral analysis through Fourier transform to obtain frequency and sound pressure information. This process can be vividly described as "identifying flow by listening to sound," that is, identifying the flow state of the fluid based on the characteristics of the sound, thereby achieving real-time monitoring of the fluid flow.

[0065] Within the flow detection range, when flow rate Q equals the designed safe operating flow rate, the high-frequency vibration of valve core 3 stops and the audible signal disappears, indicating that the current flow rate is within the safe operating range. This design not only improves the accuracy of flow monitoring but also ensures the stable operation of the hydraulic system.

[0066] In some embodiments, the fluid valve can serve as a built-in flow detection device or an external flow detection device.

[0067] Built-in flow detection devices include: In-system flow monitoring, which can be integrated into the hydraulic system and flexibly placed at the system inlet or outlet, depending on monitoring needs. This design allows for real-time monitoring of system flow, ensuring optimal system operation; and Multi-device flow monitoring, which can simultaneously monitor the flow of multiple critical components in the system. Users can place the detection device before and after these components as needed to obtain comprehensive flow data.

[0068] Among them, the external flow detection device: cross-system flow monitoring, this device can be installed independently of the hydraulic system on multiple different or identical systems. This configuration allows users to centrally monitor and manage the flow of multiple systems; single device multi-system control, through the use of an external flow detection device, can control the flow of multiple identical or different systems. This design improves monitoring efficiency while reducing the internal space requirements of the system.

[0069] In some embodiments, the process of the hydraulic valve to achieve flow and pressure regulation is as follows: the incoming liquid flows from the inlet to the outlet of the valve. Initially, the fluid flow and pressure act on the valve core 3, and then the compression spring is used to drive the valve core 3 to undergo elastic deformation. The compression spring has the characteristics of passive balance, which changes with different spring parameters, thereby achieving the regulation of different valve flows, pressures and different system working conditions. The device is based on passive control of flow, utilizes the balancing force of the compression spring, and has the flow balancing ability of nonlinear pressure drop, which can control the changes in flow and pressure. As the flow increases, the pressure drop also increases; as the flow decreases, the pressure drop also decreases. The device can be installed at different positions of the diversion branch or inside and outside the system to passively control the flow distribution and make the flow distribution more uniform.

[0070] The hydraulic valve has two states. In the first state, the valve is fully open, allowing maximum flow. The compression spring does not require balancing pressure. In the second state, the valve is closed, allowing only minimal flow, and the compression spring elastically deforms. The design prevents the valve core 3 from passing through the center disc 13. When the flow and pressure decrease, the spring returns to its original position.

[0071] Based on the fluid valve provided in the above embodiments, the present invention further provides a fluid supply system, which includes any of the fluid valves in the above embodiments, and includes a filter 200, a pressure vessel 300, a drive pump 400, a heat exchange device 500, and a heater 600, which are sequentially arranged along the fluid flow direction. The fluid valve is arranged on the inlet side of the filter 200. Since the fluid supply system uses the fluid valve in the above embodiments, the beneficial effects of the fluid supply system can be seen in the above embodiments.

[0072] Generally, the heat exchange device 500 includes two heat exchange channels for exchanging heat with each other. One heat exchange channel is connected in series between the driving pump 400 and the heater 600, and the other heat exchange channel is connected to the compressor 700 and the condenser 800 in sequence to serve as an evaporator.

[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0074] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fluid valve, characterized in that: include: Valve body (1); elastic device (2); A valve core (3) is provided on the valve body (1) so as to slide along the direction of fluid flow, and the elastic device (2) is provided between the valve core (3) and the valve body (1). A pressure surface (31) is formed on the liquid inlet side of the valve core (3), and the pressure surface (31) is subjected to a force opposite to the force exerted by the elastic device (2) on the valve core (3). When the valve core (3) slides relative to the valve body (1) in a direction to reduce the valve port (5) formed therebetween, the elastic deformation of the elastic device (2) increases. The sound monitoring device (4) is used to identify the vibration sound generated by the valve core (3) within a predetermined flow range.

2. The fluid valve according to claim 1, wherein: The invention also includes a controller, which is connected to the sound monitoring device (4) to obtain the vibration sound signal obtained by the sound monitoring device (4). The controller can obtain the sound pressure and / or frequency according to the vibration sound signal, and can obtain the flow rate according to the sound pressure and / or the frequency.

3. The fluid valve according to any one of claims 1 to 2, characterized in that: The valve body (1) is provided with a first limiting structure (121) to prevent the valve core (3) from continuing to move when the valve core (3) moves to the point where the valve port (5) opens to a preset maximum opening and abuts against the valve core (3), and the elastic device (2) is in an elastically deformed state.

4. The fluid valve according to claim 3, wherein: The valve body (1) is provided with a second limiting structure (114) to prevent the valve core (3) from continuing to move when the valve core (3) moves to the point where the valve port (5) opens to a preset minimum opening and abuts against the valve core (3).

5. The fluid valve according to claim 4, characterized in that The pressure surface (31) is in a stepped shape.

6. The fluid valve according to claim 5, characterized in that The valve body (1) includes a circulation cavity (17) and a valve flap (13) located at the center of the circulation cavity (17); the valve core (3) is slidably mounted in the circulation cavity (17); a through valve hole (361) is formed in the middle of the valve core (3); when the valve core (3) moves until the valve port (5) is located at the preset minimum opening, the valve flap (13) extends into the valve hole (361); when the valve core (3) moves until the valve port (5) is located at the preset maximum opening, the valve flap (13) is separated from the valve hole (361).

7. The fluid valve according to claim 6, wherein: An arc convex surface (131) is formed on one end of the valve flap (13) facing the fluid; and an arc chamfered structure (362) is formed along one end of the valve hole (361) facing the fluid.

8. The fluid valve according to claim 6, wherein: The valve core (3) includes a limiting protrusion (34), and the first limiting structure (121) and the second limiting structure (114) are both limiting shoulders, respectively used to limit the limiting protrusion (34) in opposite directions.

9. The fluid valve according to claim 8, wherein: The valve core (3) has an inner shoulder surface (35) facing opposite to the pressure surface (31); the elastic device (2) is a compression elastic device, one end of which penetrates into the valve core (3) to abut against the inner shoulder surface (35), and the other end of which abuts against the valve body (1).

10. The fluid valve according to claim 9, wherein: The valve core (3) is cylindrical, and the inner wall has an annular inner protrusion (36), and the valve hole (361) is formed by the annular inner protrusion (36); along the fluid flow direction, the rear end of the annular inner protrusion (36) is staggered with the rear end face of the valve core (3) and together constitutes the pressure surface (31), and the front end of the annular inner protrusion (36) is staggered with the front end face of the valve core (3) to form the inner shoulder surface (35); the annular limiting protrusion (34) is formed on the outer wall of the valve core (3).

11. A fluid supply system, comprising a filter (200), a pressure vessel (300), a driving pump (400), a heat exchange device (500), and a heater (600) arranged in sequence along a fluid flow direction, characterized in that: It also includes a fluid valve (100) according to any one of claims 1 to 10, wherein the fluid valve (100) is arranged on the inlet side of the filter (200).

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