Dynamic balance electric control valve and remote control application method thereof

Abstract

The invention discloses a dynamic balance electric control valve and a remote control application method thereof, the dynamic balance electric control valve comprises a valve body, and is characterized in that an inlet end and an outlet end are respectively arranged at two ends of the valve body, and a flow guide plate is arranged in a cavity of the valve body corresponding to the inlet end; the flow guide plate divides the inner cavity into a water passing cavity and a control cavity corresponding to the inlet end and is communicated with the outlet end, the water passing cavity and the control cavity are vertically and correspondingly arranged, are provided with communicated cavity openings and are both provided with elastic balance mechanisms to form a double-balance adjusting structure, and the valve body is provided with an adjusting valve mechanism corresponding to the top of the control cavity. According to the intelligent control valve, a dynamic balance mechanism is optimized, the intelligent automatic control performance of the valve is improved, and the intelligent control valve can be used for intelligent control application of remote control over cooling and heating of two pipes of an air conditioner.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric regulating valves, in particular to an application of a dynamic balance electric regulating valve and a remote control method thereof. BACKGROUND

[0002] In heating, ventilation and air conditioning, a regulating valve serves as a key executive element and undertakes important tasks such as regulating the flow, pressure and temperature of fluid medium. With the progress of science and technology and the improvement of industrial production requirements, the design of a dynamic balance electric regulating valve with electric regulation is carried out. However, many existing dynamic balance electric regulating valves still have the problem of insufficient regulating precision. In addition, in a fluid system, only a single balance structure is provided. Due to factors such as pressure fluctuation and temperature change, the flow pressure is unbalanced after a long period of use, which affects the overall performance of the system. For example, when the dynamic balance electric regulating valve is applied to intelligent control, the cooperation is low. The existing integrated regulating valve cannot meet the control requirements of higher efficiency, precision and remote intelligence in the application of the combination of intelligence and automation. SUMMARY

[0003] The application of the dynamic balance electric regulating valve and the remote control method thereof can realize real-time feedback and enhance the dynamic balance performance, and is applied to intelligent control with higher requirements.

[0004] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0005] A dynamic balance electric regulating valve comprises a valve body, characterized in that the valve body is provided with an inlet end and an outlet end at two ends respectively, a flow guide plate is arranged in the valve body cavity corresponding to the inlet end, the flow guide plate divides the internal cavity into a water passage and a control cavity corresponding to the inlet end, and the water passage and the control cavity are communicated with the outlet end, the water passage and the control cavity are vertically arranged corresponding to each other and are provided with a communicating cavity opening, and both are provided with an elastic balance mechanism to form a double balance regulating structure, and the valve body is provided with a regulating valve mechanism corresponding to the top of the control cavity to control the opening degree or the closing of the control cavity, so that the flow of the fluid is controlled.

[0006] The regulating valve mechanism comprises a guide cylinder, a valve and a driving motor, the valve is arranged in the guide cylinder, the driving motor is arranged above the guide cylinder, the opening degree or the closing of the control cavity communicated with the outlet end is controlled by the driving motor extending the regulating valve to the control cavity, and the guide cylinder is fixedly installed on the top of the control cavity through a flange.

[0007] The elastic balance machine comprises a first elastic balance mechanism and a second elastic balance mechanism, the first elastic balance mechanism is arranged in a water passage, and comprises a lower balance valve core, a lower pressure sensor, a U-shaped diaphragm, a through hole and a first reset spring.

[0008] The second elastic balance mechanism is arranged in a control cavity, and comprises an upper balance valve core, a water cavity, a second reset spring and an upper pressure sensor.

[0009] The inlet end and the outlet end are internally provided with connecting threads, the inlet end is communicated with the water passage, the control cavity is communicated with the outlet end, and the drive motor is further provided with a knob which can be manually adjusted, so that the opening size or the closing of the control cavity and the outlet end communicated with each other can be manually adjusted through the knob.

[0010] The guide cylinder is externally mounted on a support frame through bolts, and the support frame is internally provided with a scale.

[0011] The adjusting valve mechanism further comprises a connecting block, a movable plug, a threaded hole, a lead screw, a limiting baffle and a display screen, the guide cylinder is internally provided with a matching movable plug, the movable plug is fixedly connected with a valve at the bottom, the limiting baffle is arranged at the top edge of the movable plug, the threaded hole is arranged in the movable plug, and the matching lead screw is movably connected in the threaded hole, the drive motor is fixedly installed at the top of the support frame, the connecting block is installed at the bottom of the output shaft of the drive motor, and the connecting block is connected with the lead screw.

[0012] The drive motor is externally provided with a display screen, and the position sensor is further arranged at the connection position of the upper balance valve core and the valve core.

[0013] Further comprising an integrated controller, the controller is provided with a control center module, a storage module, a sensing module, a wireless communication module and a display module, the control center is connected with the storage module, the sensing module, the wireless communication module and the display module, respectively, the controller is electrically connected with the drive motor, the upper and lower pressure sensors, the position sensor and the display screen, and is further connected with a temperature or humidity sensor.

[0014] A two-pipe cooling and heating remote control application method of an air conditioner based on the dynamic balance electric adjusting valve, characterized in that the method comprises the following steps:

[0015] 1) The inlet end of the regulating valve is connected to the water inlet main pipe of the air conditioning box through threads, and the outlet end is connected to the return water pipe of the air conditioning box, and a temperature sensor is arranged inside the air conditioning box;

[0016] 2) The target temperature of the return air of the air conditioning box is set through a remote monitoring platform such as a mobile phone APP;

[0017] 3) The water flow entering the air conditioning box is adjusted through a dynamic balance electric regulating valve, when the driving motor receives a cooling or heating demand signal, the valve is moved downward or upward by the motor drive to increase or decrease the cold water flow entering the air conditioning box, so as to control the heat exchange efficiency of the air conditioning box, and finally make the return air temperature stable at the set value;

[0018] And the internal opening and pressure value of the valve can be displayed and viewed at any time through the display screen;

[0019] Further comprising:

[0020] 31) The upper and lower pressure sensors on both sides of the water passage cavity monitor the differential pressure change in real time, and feedback the signal to the controller to drive the motor to adjust the required opening of the valve and balance;

[0021] 32) In addition, first, the fluid deforms under the action of the pressure difference, and the reset spring pushes the lower balance valve core to fine-tune, to offset the influence of pressure fluctuation on flow, second, the fluid is extruded along the guide plate to compress the upper balance valve core, so that the upper balance valve core compresses the second reset spring along the inner wall of the water cavity, to offset the influence of pressure fluctuation on flow again, to ensure the balance and stability of the cold water flow entering the air conditioning box.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1. The water passage cavity and the control cavity realize upper and lower mutual response bidirectional balance and upper and lower mutual response bidirectional sensing design, can monitor the pressure change of the inlet and outlet of the valve in real time, and transmit the signal to the driving motor, so as to realize fast, accurate and precise control of the valve, at the same time, can improve the effective maintenance of the dynamic balance inside the valve body, and adopt controller connection control to achieve intelligent control, to improve the accuracy and intelligent application usability of the overall regulating valve.

[0024] 2. Based on the structure of the dynamic balance electric regulating valve, data interaction with the remote monitoring platform can be realized, remote instructions can be received and combined with local sensor data to realize remote control of the air conditioning two pipes.

[0025] 3、The display screen is arranged outside the driving motor, the display screen can display current valve opening degree, setting value, working state and other information in real time, the valve state can be grasped at a glance, the operation efficiency and accuracy are greatly improved, meanwhile, the scale is arranged in the support frame, the valve opening degree can be directly observed through the scale, the operation accuracy is further ensured.

[0026] 4、The dynamic balance electric regulating valve, the knob which can be manually adjusted is arranged on the side of the driving motor, meanwhile, the flexibility of manual operation is reserved, when the fault or accident occurs, the valve can be used by manually rotating the knob, the practicability or safety of the equipment is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present application.

[0028] Figure 2 It is another perspective structural schematic diagram of the present application.

[0029] Figure 3 It is a cross-sectional structural schematic diagram of the present application.

[0030] Figure 4 It is an explosion structural schematic diagram of the driving part of the present application.

[0031] Figure 5 It is a structural schematic diagram of the movable plug and the guide cylinder of the present application.

[0032] Figure 6 It is a connection block schematic diagram of the control system of the present application.

[0033] Label in the figure: 1, valve body; 2, inlet end; 3, outlet end; 4, guide plate; 5, water cavity; 51, water cavity; 6, control cavity; 7, guide cylinder; 8, valve; 9, driving motor; 10, knob; 11, connecting thread; 12, balance valve core; 13, pressure sensor; 14, U-shaped diaphragm; 15, through hole; 16, reset spring; 17, clamping groove; 18, bolt; 19, support frame; 20, scale; 21, clutch; 22, connecting block; 23, movable plug; 24, threaded hole; 25, lead screw; 26, limit baffle; 27, display screen. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0035] Embodiment one

[0036] Reference Figures 1-5The application provides a technical scheme: a dynamic balance electric regulating valve, which comprises a valve body 1, one end of the valve body 1 is provided with a fixed inlet end 2 on the side surface, and the other end is provided with a fixed outlet end 3 on the side surface, a flow guide plate 4 is arranged in the valve body 1 and corresponds to the inlet end 2, the flow guide plate 4 is divided into a water passing cavity 5, a control cavity 6 and the outlet end 3 in the inner cavity corresponding to the inlet end 2, the water passing cavity 5 and the control cavity 6 are vertically arranged and correspond to each other, and are provided with a cavity opening, and the cavity opening or the cavity is provided with an elastic balance mechanism, and the valve body 1 is provided with a regulating valve mechanism corresponding to the top of the control cavity 6 to control the opening or closing of the control cavity 6.

[0037] Referring to Figure 1 , Figure 3 The inlet end 2 and the outlet end 3 are provided with connecting threads 11 in the inside, the inlet end 2 is connected with the water passing cavity 5, and the control cavity 6 is connected with the outlet end 3.

[0038] The regulating valve mechanism comprises a guide cylinder 7, a valve 8 and a driving motor 9, the valve 8 is arranged in the guide cylinder 7, the driving motor 9 is arranged above the guide cylinder 7, the opening size or closing of the control cavity 6 connected with the outlet end 3 is controlled by the driving motor 9 to the control cavity 6 through the regulating valve 8, and the guide cylinder 7 is fixedly installed on the top of the control cavity 6 through a flange.

[0039] Referring to Figure 3 The elastic balance mechanism comprises a first elastic balance mechanism and a second elastic balance mechanism, the first elastic balance mechanism is arranged in the water passing cavity 5 and comprises a lower balance valve core 12, a lower pressure sensor 13, a U-shaped diaphragm 14, a through hole 15 and a first reset spring 16, the lower pressure sensor 13 is arranged on the inside of the upper part of the water passing cavity 5, the U-shaped diaphragm 14 is arranged at the lower part of the water passing cavity 5, the lower balance valve core 12 is movably connected to the middle part of the U-shaped diaphragm 14, a plurality of groups of through holes 15 are arranged in the inside of the lower part of the U-shaped diaphragm 14, and the first reset spring 16 is arranged outside the lower balance valve core 12 and in the inside of the U-shaped diaphragm 14.

[0040] The second elastic balance mechanism is arranged in the control cavity 6 or the cavity opening and changes the position with the regulating change of the valve 8, and comprises an upper balance valve core 17, a water containing cavity 311, a second reset spring 312 and an upper pressure sensor 313, the valve 8 is provided with the water containing cavity 311 and movably connected with the upper balance valve core 17 in the inside, the second reset spring 312 is arranged outside the upper balance valve core 17 and in the inside of the water containing cavity 311, and the upper pressure sensor 313 is arranged at the connection position of the upper balance valve core 17 and the valve 8, the second elastic balance mechanism, the valve has the control effect of closing or shutting, also has the elastic balance effect, and can also interact with the first elastic balance mechanism, and is very practical.

[0041] The model of the pressure sensor 13 can be QBE2002-P10, and a U-shaped diaphragm 14 matched with the water passage cavity 5 is arranged below the pressure sensor 13, a water buffering cavity 51 is arranged below the U-shaped diaphragm 14, and the balance valve core 12 extends into the water buffering cavity 51 below the U-shaped diaphragm 14, a plurality of groups of through holes 15 are arranged below the U-shaped diaphragm 14 corresponding to the water buffering cavity 51, and a reset spring 16 is sleeved outside the balance valve core 12 and arranged above the U-shaped diaphragm 14.

[0042] The adjustment balance principle is that first, fluid enters the water passage cavity 5 through the inlet end 2, the water flow presses and compresses the balance valve core 12, and then the fluid entering the water passage cavity 5 enters the water buffering cavity 51 through the internal through hole 15 of the U-shaped diaphragm 14, that is, a large pressure difference is generated between the water passage cavity 5 and the control cavity 6, and the U-shaped diaphragm 14 is deformed and stretched (the reset state of the U-shaped diaphragm 14 is bent and contracted) under the action of fluid pressure and the pressure difference, thereby pushing the balance valve core 12 to displace downward and press the reset spring 16, to obtain a first balance.

[0043] The water flow further presses the upper balance valve core 17 along the guide plate 4, so that the upper balance valve core 17 compresses the second reset spring 312 along the inner wall of the water cavity 311, to further offset the influence of pressure fluctuation on flow, to form a double balance, and the water passage cavity and the control cavity realize upper and lower mutual response and bidirectional balance, to improve the effective maintenance of the dynamic balance inside the valve body, to ensure that the water flow is balanced and stable and flows out from the control cavity 6 and the outlet end 3, to realize the internal dynamic balance of the regulating valve. The upper and lower bidirectional mutual response balance mode maintains the dynamic balance inside the valve body 1.

[0044] At the same time, the upper pressure sensor 313 is arranged at the connection position of the upper balance valve core 17 and the valve 8, and signals are transmitted to the driving motor 9, the driving motor 9 timely adjusts the valve 8, to realize quick and accurate response and precise control or closing of the valve 8; conversely, when the flow pressure is weakened, the balance valve core 12 can be stably reset according to pressure change under the elastic action of the reset spring 16, and the valve 8 is timely adjusted by the driving motor 9 under the feedback action of the double upper and lower pressure sensors, to maintain the intelligent electric adjustment dynamic balance inside the valve body 1 accurately.

[0045] In addition, when the valve is to be closed, the valve 8 is only lowered to abut and seal the guide plate 4, to achieve plugging of the cavity opening communicating the control cavity 6 and the water passage cavity 5.

[0046] Reference Figure 2The support frame 19 is installed outside the guide cylinder 7 through the bolt 18, and the inside of the support frame 19 is provided with a scale 20, and the opening degree of the valve 8 can also be directly observed through the scale 20, which further ensures the accuracy of operation.

[0047] With reference to Figure 4 , Figure 5 Further refine the regulating valve mechanism, also includes connecting block 22, movable plug 23, threaded hole 24, screw 25, limit baffle 26, display screen 27, and the inside of the guide cylinder 7 is provided with a matching movable plug 23, and the inside of the guide cylinder 7 and the movable plug 23 are oval-shaped, which can effectively prevent the movable plug 23 from rotating with the screw 25 inside the guide cylinder 7 when the screw 25 rotates, the movable plug 23 is fixedly connected at the bottom of the valve 8, and the limit baffle 26 is arranged at the top edge of the movable plug 23, which has a limiting effect on the movable plug 23 to prevent the movable plug 23 from separating from the inside of the guide cylinder 7, the inside of the movable plug 23 is provided with a threaded hole 24, and the inside of the threaded hole 24 is provided with a matching screw 25 in a movable connection, and the screw 25 is located in the hollow part of the support frame 19, the support frame 19 is fixedly installed with a driving motor 9 at the top, the output shaft of the driving motor 9 is fixedly installed with a connecting block 22 at the bottom, the connecting block 22 is connected to the screw 25, and the driving motor 9 is provided with a display screen 27 outside.

[0048] The driving motor 9 is provided with a manually adjustable knob 10 on the side, which can also convert manual adjustment to adjust the valve 8 to extend to the control cavity 6 to control the opening degree or closing of the control cavity 6 and the outlet end 3. The specific conversion structure of the knob and the driving motor is not described here, which is a direct application of the existing technology structure.

[0049] Further refine the control system of the dynamic balance electric regulating valve, which also includes an integrated controller, the controller is provided with a control center module, a storage module, a sensing module, a wireless communication module and a display module, the control center is respectively connected with the storage module, the sensing module, the wireless communication module and the display module, the controller is electrically connected with the driving motor, the pressure sensor and the display screen, and the outside is also connected with a temperature or humidity sensor.

[0050] When the dynamic balance electric regulating valve is adjusted, the driving motor 9 receives the adjustment signal and starts to drive the connecting block 22 and the screw 25 to rotate, and because the threaded hole 24 is matched with the screw 25, the screw 25 rotates inside the threaded hole 24, so that the movable plug 23 and the valve 8 move up and down along the inner wall of the guide cylinder 7 to adjust the opening and closing degree of the valve 8 in the control cavity 6, at the same time, the running data is also displayed on the display screen 27 outside the driving motor 9, so that the operator can master the state of the valve 8 offline, thereby further ensuring the dynamic balance of the valve 8;

[0051] The water passage and the control cavity realize up-down mutual response bidirectional balance and up-down mutual response bidirectional induction design, can monitor valve inlet and outlet pressure changes in real time, and transmit signals to the driving motor, so that the valve is quickly, accurately and precisely controlled, the dynamic balance inside the valve body can be effectively maintained, the controller is connected for control, intelligent control is achieved, and the accuracy and intelligent application usability of the overall regulating valve are improved.

[0052] Based on the structure of the dynamic balance electric regulating valve, data interaction with a remote monitoring platform can be realized, remote instructions can be received, and two-pipe cooling and heating remote control of the air conditioner can be realized by combining local sensor data.

[0053] When the power fails or emergency intervention is needed, the knob 10 connected to the side can be manually rotated to drive the lead screw 25 to rotate synchronously, so that manual adjustment of the valve 8 in the control cavity 6 is realized, and the regulating valve can be adjusted at any time.

[0054] Example two

[0055] The above dynamic balance electric regulating valve is used for two-pipe cooling and heating control of a heating ventilation air conditioner terminal, and the pipeline is connected.

[0056] The inlet end of the regulating valve is connected to the water inlet main pipeline of the air conditioner box through threads, 7 DEG C cold water is passed in summer, and 60 DEG C hot water is passed in winter, the outlet end is connected to the return water pipeline of the air conditioner box, and a circulation path of water inlet-air conditioner box-regulating valve-return water is formed.

[0057] A temperature sensor is arranged in the air conditioner box to detect the return air temperature, for example, 26 DEG C in summer and 20 DEG C in winter, and the sensor signal is connected to the driving motor control system of the regulating valve.

[0058] Core control logic:

[0059] The water flow entering the air conditioner box is adjusted by the dynamic balance electric regulating valve, the heat exchange efficiency of the air conditioner box is controlled, and finally the return air temperature is stabilized at the set value; at the same time, the dynamic balance mechanism offsets the pressure fluctuation of the pipe network to ensure the stability of the flow.

[0060] Starting and setting of summer cooling mode control process:

[0061] After the system is started, the display screen outside the driving motor automatically displays the current mode (“cooling”), the set temperature (26 DEG C), the real-time return water temperature and the initial opening degree of the valve (for example, 30%).

[0062] The air conditioner box return air temperature sensor detects the actual temperature (for example, 28 DEG C, higher than the set value), and the signal is transmitted to the driving motor.

[0063] Electric adjustment process: the drive motor receives the cooling demand signal, rotates the screw rod through the motor drive, drives the movable plug and valve to move downward (the opening degree increases, such as from 30% to 60%), and increases the cold water flow into the air conditioning box.

[0064] The heat exchange between cold water and air in the air conditioning box is strengthened, and the return air temperature gradually decreases. When the sensor detects that the temperature decreases to 26℃, the drive motor stops adjusting, and the valve maintains the current opening degree.

[0065] Dynamic balance effect: if other terminal devices, such as fresh air unit adjustment, cause pipe network pressure fluctuation, or if the water inlet pressure suddenly rises, the upper and lower pressure sensors monitor the pressure difference in real time and feed back the signal to the drive motor. At the same time, the double balance mechanism offsets the influence of pressure fluctuation on flow, ensures the stability of cold water flow into the air conditioning box, such as maintaining the flow corresponding to 60% opening degree, and avoids temperature fluctuations.

[0066] Manual intervention in case of power failure: if the power fails, the operator can manually adjust by rotating the knob: rotating the knob drives the screw rod to drive the valve opening degree to decrease or increase, and manually maintains the temperature according to the air conditioning box return air temperature table mechanical table.

[0067] Winter heating mode control process, mode switching and setting:

[0068] After switching to heating mode, the display screen is updated to heating, set temperature 20℃, and the initial opening degree of the valve is adjusted to 20% according to the environmental temperature;

[0069] The return air temperature sensor detects the actual temperature, such as 18℃, which is lower than the set value, and the signal triggers the drive motor to act.

[0070] Its electric adjustment process: the drive motor drives the valve opening degree to increase from 20% to 50%, increases the hot water flow into the air conditioning box, strengthens the heat exchange efficiency, and gradually increases the return air temperature to 20℃ and stabilizes.

[0071] Its dynamic balance and safety protection: if the pipe network hot water pressure drops suddenly, the pressure sensor captures the signal, the drive motor quickly adjusts the valve opening degree, such as temporarily increases to 55%, to compensate for the flow loss; at the same time, the reset spring pushes the balance valve core to reset, avoiding insufficient heating caused by sudden reduction of flow.

[0072] The scale on the support frame can directly observe the real-time opening degree of the valve 55%, which is double checked with the data on the display screen to ensure accurate adjustment.

[0073] After testing, it fully meets:

[0074] High temperature control accuracy: the dynamic balance mechanism offsets the pipe network pressure fluctuation, the flow stability is improved within ±5%, and the return air temperature fluctuation can be controlled within ±1℃.

[0075] Energy saving: electric adjustment response speed is fast ≤3 seconds, avoiding overcooling or overheating, reducing water system energy consumption.

[0076] Reliability: electric and manual dual-mode switching, responding to power failure and other emergencies, ensuring continuous operation of the terminal equipment.

[0077] And the display screen real-time feedback state, scale auxiliary calibration, reduce the difficulty of operation and maintenance.

[0078] This example is fully compatible with dynamic balance electric regulating valve for precise regulation, pressure self-adaptation, dual-mode control multiple functions, fully adapt to the heating and air conditioning terminal two-pipe system for cold and warm alternating intelligent control, especially suitable for large office buildings, shopping malls and other places with high temperature stability requirements.

[0079] Example three,

[0080] A kind of air conditioning two-pipe cold and warm remote control application method based on the above dynamic balance electric regulating valve, comprising the following:

[0081] 1) the inlet end of the regulating valve is connected to the water inlet main pipe of the air conditioning box by screw thread, and the outlet end is connected to the return water pipe of the air conditioning box, and a temperature sensor is arranged inside the air conditioning box;

[0082] 2) set the air conditioning box return air target temperature through a remote monitoring platform such as a mobile phone APP;

[0083] 3) adjust the water flow entering the air conditioning box through the dynamic balance electric regulating valve, when the drive motor receives the cooling or heating demand signal, the valve is driven downward or upward by the motor to increase or decrease the cold water flow entering the air conditioning box, control the heat exchange efficiency of the air conditioning box, and finally make the return air temperature stable at the set value;

[0084] And the display screen displays the valve internal opening and pressure value at any time.

[0085] Also includes the following:

[0086] 31) The upper and lower pressure sensors on both sides of the water cavity monitor the pressure difference change in real time, and feed the signal to the controller to drive the motor to adjust the valve opening;

[0087] 32) In addition, first, the water flow causes the U-shaped diaphragm to deform under the action of the pressure difference, and the reset spring pushes the balance valve core to fine-tune, offsetting the influence of pressure fluctuation on flow, second, the water flow is squeezed through the fluid along the guide plate 4 to the upper balance valve core 17, so that the upper balance valve core 17 is compressed along the inner wall of the water cavity 311 to the second reset spring 312, to offset the influence of pressure fluctuation on flow again, ensuring the balance and stability of the cold water flow entering the air conditioning box.

[0088] The controller is integrated with a wireless communication module, such as NB-IoT / LoRa, to support data interaction with a remote monitoring platform, such as a cloud platform, a mobile phone APP, and a building automation system BA; and a smart control unit (MCU) is added to receive remote instructions and combine local sensor data, including a pressure sensor and an air conditioning box return air temperature sensor to realize closed-loop control; a temperature sensor, such as a PT100, is installed in the air conditioning box return air pipeline, and the signal is accessed to the valve smart control unit

[0089] The screen adds remote control mode and network status indicators, and the knob still serves as a backup for local manual operation.

[0090] The operation and maintenance personnel can set the air conditioning box return air target temperature (such as 20℃) through the remote monitoring platform such as the mobile phone APP, the instruction is sent to the valve smart control unit through the wireless communication module, and the display screen is updated synchronously with "remote setting: 20℃". The air conditioning box return air temperature sensor detects the current temperature (such as 16℃, which is lower than the set value) in real time, and the data is transmitted to the smart control unit; the control unit calculates the temperature difference (4℃), sends the "increase opening degree" instruction to the drive motor, the drive motor drives the screw rod to rotate through the clutch, the valve opening degree increases from the initial 20% to 50%, the hot water flow increases, and the air conditioning box heating capacity improves; the dynamic balance mechanism works synchronously: if the main pipeline pressure suddenly rises (such as other ends are closed), the pressure difference change of the water passage pressure sensor is detected, the signal is fed back to the control unit, and the reset spring pushes the balance valve core to fine-tune, offsetting the influence of pressure fluctuation on flow (ensuring that the hot water flow is stable at 50% opening degree corresponding value), avoiding temperature sudden rise.

[0091] The valve uploads real-time operation data to the remote platform: current opening degree (50%), return air temperature (16℃→18℃→20℃), inlet and outlet pressure (such as 0.3MPa / 0.25MPa), motor working state (normal or fault); if the platform monitors that the temperature rises to 22℃ (exceeding the set value), it automatically sends the "reduce opening degree" instruction, and the valve opening degree is adjusted to 30%, until the temperature stabilizes at 20℃; if temporary heating is needed (such as temporary use of a conference room), the operation and maintenance personnel can remotely manually change the target temperature to 22℃, and the valve will respond immediately.

[0092] Remote intelligent operation effect can be achieved:

[0093] Unmanned operation and maintenance: without on-site adjustment, centralized control of multiple ends (air conditioning boxes, fresh air handling units, etc.) is realized through the remote platform, reducing labor costs;

[0094] Precise adjustment: combined with temperature, flow, and pressure multi-parameter closed-loop control, temperature fluctuation can be controlled within ±0.5℃, which is better than traditional manual adjustment;

[0095] Fault early warning: remotely monitor motor current, pressure anomaly and other data, and early warning valve sticking, pipe network leakage and other problems to avoid system paralysis;

[0096] Energy saving optimization: through platform data analysis, dynamically optimize the opening degree of each terminal valve (such as reducing the heating temperature at night), and reduce the overall energy consumption by 10%-15%.

[0097] By adding intelligent communication and control module, remote and intelligent cooling and heating control of HVAC terminal two-pipe system is realized, which adapts to the centralized control demand of modern large building.

[0098] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dynamic balancing electric regulating valve, comprising a valve body (1), characterized in that, The valve body (1) has an inlet end (2) and an outlet end (3) at both ends. Inside the valve body (1), a guide plate (4) is provided corresponding to the inlet end (2). The guide plate (4) divides the internal cavity into a water passage cavity (5) and a control cavity (6) corresponding to the inlet end (2), and communicates with the outlet end (3). The water passage cavity (5) and the control cavity (6) are vertically corresponding and have communicating openings. Both are provided with elastic balancing mechanisms. The valve body (1) is provided with an adjusting valve mechanism at the top of the control cavity (6) to control the opening or closing of the control cavity (6).

2. The dynamic balancing electric regulating valve according to claim 1, characterized in that, The regulating valve mechanism includes a guide cylinder (7), a valve (8), and a drive motor (9). The guide cylinder (7) is equipped with a matching valve (8), and the drive motor (9) is located above the guide cylinder (7). The drive motor (9) controls the opening or closing of the regulating valve (8) extending into the control chamber (6) and communicating with the outlet end (3). The guide cylinder (7) is fixedly installed on the top of the corresponding control chamber (6) by a flange.

3. The dynamic balancing electric regulating valve according to claim 2, characterized in that, The elastic balancing machine includes a first elastic balancing mechanism and a second elastic balancing machine. The first elastic balancing machine is located inside the water passage chamber (5) and includes a lower balancing valve core (12), a lower pressure sensor (13), a U-shaped diaphragm (14), a through hole (15), and a first reset spring (16). The lower pressure sensor (13) is arranged on both sides of the upper interior of the water passage chamber (5). The U-shaped diaphragm (14) is located at the lower part of the water passage chamber (5). The lower balancing valve core (12) is movably connected to the middle of the U-shaped diaphragm (14). Multiple sets of through holes (15) are arranged inside the lower interior of the U-shaped diaphragm (14). The first reset spring (16) is sleeved on the outside of the lower balancing valve core (12) and is located inside the U-shaped diaphragm (14). The second elastic balancing mechanism is located in the control cavity (6) and includes an upper balancing valve core (17), a water-containing cavity (311), a second return spring (312), and an upper pressure sensor (313). The valve core (8) is provided with a water-containing cavity (311) and is internally movably connected to the upper balancing valve core (17). The upper balancing valve core (17) is located outside the water-containing cavity (311) and the second return spring (312) is sleeved thereon. The upper pressure sensor (313) is provided at the connection between the upper balancing valve core (17) and the valve core (8).

4. The dynamic balancing electric regulating valve according to claim 2, characterized in that, Both the inlet end (2) and the outlet end (3) are provided with connecting threads (11). The inlet end (2) is connected to the water passage chamber (5), and the control chamber (6) is connected to the outlet end (3). The drive motor (9) is also provided with a manually adjustable knob (10) on its side. The knob (10) can be used to manually adjust the opening degree of the valve (8) extending into the control chamber (6) or to close the control chamber (6) and the outlet end (3).

5. The dynamic balancing electric regulating valve according to claim 2, characterized in that, The guide tube (7) is fitted with a support frame (19) by bolts (18) on the outside, and a scale (20) is provided inside the support frame (19).

6. The dynamic balancing electric regulating valve according to claim 4, characterized in that, The regulating valve mechanism also includes a connecting block (22), a movable plug (23), a threaded hole (24), a lead screw (25), a limiting baffle (26), and a display screen (27). The guide cylinder (7) is provided with a matching movable plug (23). The bottom of the movable plug (23) is fixedly connected to the valve (8). The top edge of the movable plug (23) is provided with a limiting baffle (26). The movable plug (23) is provided with a threaded hole (24). The threaded hole (24) is provided with a matching lead screw (25) in a movable connection. The top of the support frame (19) is fixedly installed with a drive motor (9). The bottom of the output shaft of the drive motor (9) is installed with a connecting block (22). The connecting block (22) is connected to the lead screw (25).

7. The dynamic balancing electric regulating valve according to claim 3, characterized in that, A display screen (27) is provided on the outside of the drive motor (9), and a position sensor is also provided at the connection between the upper balance valve core (17) and the valve core (8).

8. The dynamic balancing electric regulating valve according to claim 7, characterized in that, It also includes an integrated controller, which is equipped with a control center module, a storage module, a sensing module, a wireless communication module, and a display module. The control center is connected to the storage module, the sensing module, the wireless communication module, and the display module respectively. The controller is electrically connected to the drive motor (9), the upper and lower pressure sensors, the position sensor, and the display screen respectively, and is also externally connected to a temperature or humidity sensor.

9. A method for remote control of a two-pipe air conditioning system for both cooling and heating based on a dynamic balancing electric regulating valve as described in any one of claims 1 to 8, characterized in that, Including the following: 1) The inlet end of the regulating valve is connected to the main water inlet pipe of the air conditioning unit via a thread, and the outlet end is connected to the return water pipe of the air conditioning unit. A temperature sensor is installed inside the air conditioning unit. 2) Set the target return air temperature of the air conditioning unit through a remote monitoring platform such as a mobile APP; 3) The flow rate of water entering the air conditioning unit is adjusted by a dynamic balance electric regulating valve. When the drive motor receives a cooling or heating demand signal, it drives the valve to move its opening down or up to increase or decrease the flow rate of cold water entering the air conditioning unit, control the heat exchange efficiency of the air conditioning unit, and finally stabilize the return air temperature at the set value. The valve's internal opening degree and pressure value can be viewed at any time via the display screen.

10. A method for remote control of cooling and heating in a two-pipe air conditioning system using a dynamic balancing electric regulating valve as described in claim 9, characterized in that... It also includes the following: 31) The upper and lower pressure sensors on both sides of the water passage chamber monitor the pressure difference changes in real time and feed the signals back to the controller to drive the motor to adjust the required opening degree and balance of the valve; 32) In addition, firstly, the fluid deforms under the action of pressure difference with the U-shaped diaphragm, and the lower balance valve core (12) is finely adjusted by the push of the reset spring to offset the influence of pressure fluctuation on the flow rate. Secondly, the fluid squeezes the upper balance valve core 17 along the guide plate 4, so that the upper balance valve core 17 compresses the second reset spring 312 along the inner wall of the water chamber 311, and offsets the influence of pressure fluctuation on the flow rate again, so as to ensure that the cold water flow rate entering the air conditioning unit is balanced and stable.

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