Intelligent regulating valve for heat supply pipeline

Abstract

An intelligent regulating valve installed on a heat supply pipeline of a central heating system comprises a valve body, a regulating valve element, a valve cover and an intelligent regulating device. The valve body is provided with an inlet channel, an outlet channel, an adjusting opening and a filtering opening, the adjusting opening is formed between the inlet channel and the outlet channel, and the valve body is provided with a water inlet pressure detection opening, a water outlet pressure detection opening and a water temperature detection opening; an adjusting valve element provided with a water through groove is arranged in the adjusting opening and can horizontally rotate to change the position of the water through groove so as to control the opening degree of the valve; the valve cover is provided with a vertical through hole for tightly sleeving the regulating valve core, and is connected with the regulating port and the intelligent regulating device through external threads at the two ends of a cover body respectively; the intelligent regulation and control device controls a rotating device connected with the regulating valve element to enable the regulating valve element to horizontally rotate to change the position of the water through groove so as to regulate and control the opening degree of the valve; and the filtering port is provided with a filtering element and is blocked by a screwed plug and a sealing piece. The problems that in the prior art, water heating power is difficult to balance, efficiency is low, system stability is poor, and maintenance cost is high are solved.

Description

Technical Field

[0001] This invention relates to the technical field of hot water delivery control in heating pipelines of centralized heating systems, and specifically to an intelligent regulating valve for heating pipelines. Background Technology

[0002] Controlling the hot water delivery volume in the heating pipelines of a centralized heating system is crucial for the system's ability to control room temperature, maintain heat balance, improve heating efficiency, and enhance living comfort, especially in centralized heating systems. Existing technologies primarily employ the following devices and methods to control this hot water delivery volume: One method is remote room temperature control, which uses indoor temperature sensors and remote wireless control valves. The system adjusts individual electric control valves based on the user's indoor temperature; if the indoor temperature is too high, the valve closes slightly; if it's too low, the valve opens wider. However, this method suffers from drawbacks such as difficulty in room temperature regulation, long response times, inter-valve interference between parameters, difficulty in achieving hydraulic and thermal balance, and poor system stability.

[0003] Secondly, remote return water temperature regulation uses remote wireless regulating valves to control the return water temperature for each user, employing a similar regulation method as above. This method has drawbacks: it cannot be tested before the heating season, and it is difficult to achieve the expected regulation effect for users with abnormal heat load indicators and flow rates, easily leading to user complaints.

[0004] Thirdly, there is intelligent flow valve regulation, which uses a remote wireless flow valve to regulate the hot water flow at the user end. This method has drawbacks, including high initial investment, high subsequent testing and maintenance costs leading to high system maintenance costs, and the possibility of the regulation effect failing if timely inspection is not performed. Summary of the Invention

[0005] To address the aforementioned defects and shortcomings of existing technologies, a smart regulating valve for heating pipelines is provided. The technical solution adopted by this invention for a smart regulating valve for heating pipelines is as follows: A smart regulating valve for heating pipelines is installed on the heating pipelines of a centralized heating system. The smart regulating valve includes: a valve body, a regulating valve core, a valve cover, and a smart control device. The valve body has an inlet, an outlet, a regulating port, and a filter port. An inlet channel and an outlet channel are provided between the inlet and outlet channels, and the regulating port is provided between the inlet and outlet channels. The valve body also has an inlet pressure detection port, an outlet pressure detection port, and a water temperature detection port. The regulating valve core has a water passage groove, is placed within the regulating port, and can rotate horizontally to change the horizontal position of the water passage groove to control the opening degree of the smart regulating valve. The valve cover has a vertical through hole for tightly fitting the regulating valve core, and the valve cover is secured by external threads at both ends of the cover body. The grooves are respectively connected to the regulating port and the intelligent control device; the intelligent control device is provided with the inlet water pressure signal input port, the outlet water pressure signal input port, and the water temperature signal input port. The intelligent control device has the functions of wired receiving, transmitting, and wirelessly sending and receiving heating data signals, and also has the functions of displaying heating status parameters including the inlet and outlet water pressure / differential pressure, the water temperature, and the valve opening. The intelligent control device controls the rotation device connected to the regulating valve core through remote automatic operation control, remote manual operation control, on-site non-contact operation control, or local contact operation control, thereby controlling the horizontal rotation of the regulating valve core to change the horizontal position of the water passage and adjust the opening of the intelligent regulating valve. A filter element is installed in the filter port and sealed by a plug and a sealant. The filter element can be inserted or removed through the filter port. The filter element is a filter screen or a filter core.

[0006] In the above scheme, the regulating valve core is a specially made column formed by three columns of different thicknesses. The upper end is a small square column that connects to the rotating device. The middle section is a slender cylinder with 2 to 4 annular grooves for installing seals. The lower end is a short and thick cylinder with the water passage groove. The water passage groove is a through-bottom parabolic groove on the short and thick cylinder. The groove width at the bottom of the parabolic groove is ≤90% of the diameter of the short and thick cylinder, the groove depth at the bottom of the parabolic groove is ≤80% of the diameter of the short and thick cylinder, and the groove height is ≤80% of the height of the short and thick cylinder. One end of the valve cover is an external thread with a sealing surface that is sealed to the regulating port through threads and seals. The other end is a square-round dome that is tightly connected to the square through groove built into the bottom of the intelligent control device. The middle part is an external thread that connects the intelligent control device to the valve cover through a threaded lock nut.

[0007] In the above scheme, the detection port is provided with an internal thread for sealing connection with a water pressure detection connector or a water temperature detection connector with a corresponding external thread through a sealing element. The water pressure detection connector is used to connect to a water pressure detection joint, and the water temperature detection connector is used to connect to a water temperature detection joint. The water pressure detection joint is used for water pressure detection in the inlet channel and the outlet channel, and the water temperature detection joint is used for water temperature detection inside the valve. The water pressure detection connector is provided with a rubber-type self-sealing structure or a spring-type self-sealing structure for plug-in or compression fitting water pressure detection joints. The water temperature detection connector can be plugged into or threaded to secure the water temperature detection joint with a temperature probe. The water pressure detection connector and the water temperature detection connector are sealed to withstand a pressure of 1.6 MPa. The water pressure detection joint can be inserted / pulled out or snapped / removed from the water pressure detection connector. When the water pressure detection connector is pulled out or removed, the water pressure detection connector automatically completes the 1.6 MPa pressure-resistant sealing. The water pressure detection connector includes an inlet water pressure detection connector and an outlet water pressure detection connector. The outer end of the inlet water pressure detection connector is connected to the inlet water pressure signal input port through a water pressure lead connector. The outer end of the outlet water pressure detection connector is connected to the outlet water pressure signal input port through a water pressure lead connector. The outer end of the water temperature detection connector is connected to the water temperature signal input port through a water temperature lead connector.

[0008] In the above scheme, the valve body, regulating valve core, and valve cover are made of metallic materials including copper, aluminum, ductile iron, carbon steel, alloys, and stainless steel, or non-metallic materials including plastics and composite materials. The sealing element is a rubber sealing ring, a plastic sealing ring, or a composite material sealing ring.

[0009] The inlet and outlet diameters mentioned above are DN15, DN20, DN25, or DN32, and are connected to the corresponding diameter heating pipelines via threaded fittings. The inlet and outlet diameters can also be DN40, DN50, or DN65, and are connected to the corresponding diameter heating pipelines via threaded fittings / flanges. The intelligent control device controls the opening of the intelligent control valve by controlling the horizontal rotation of the regulating valve core to change the horizontal position of the water channel, thereby changing the flow area or flow diameter from the inlet channel to the outlet channel, and thus controlling the flow rate of hot water passing through the intelligent control valve. The nominal pressure of the intelligent control valve is 1.6 MPa.

[0010] A manually adjustable valve, when not using the intelligent control device, allows for adjustment of the horizontal position of the regulating valve core's water passage groove via a substitute manual adjustment device. This controls the valve's opening, altering the flow area or diameter from the inlet to the outlet channel, thereby controlling the hot water flow through the valve. The manual adjustment device includes a magnetic lock handle, a regulating valve core connector, a magnetic lock component, and a connecting lock nut. The connecting lock nut secures the regulating valve core connector to the external thread in the center of the valve cover. The magnetic lock handle can be manually engaged or disengaged from the regulating valve core connector. When the magnetic lock handle is manually engaged with the regulating valve core connector, the magnetic lock component unlocks, allowing the handle to be rotated to adjust the horizontal position of the regulating valve core's water passage groove via the connector. When the magnetic lock handle is manually disengaged from the connector, the magnetic lock component locks, preventing adjustment of the valve core's water passage groove's horizontal position. With the magnetic lock component locked, the regulating valve core cannot rotate, and the manual adjustment device cannot be operated. The nominal pressure of the manual regulating valve is 1.6 MPa.

[0011] Compared with the prior art, the main beneficial effects of the technical solution adopted in this invention are as follows: 1. It greatly improves the heating efficiency of the centralized heating system and reduces unnecessary energy consumption; 2. It greatly improves the control level and accuracy of hot water delivery in centralized heating systems; 3. It greatly reduces the cost of manual operation, inspection and maintenance, and improves labor productivity; 4. After adjustment, the manual adjustment device can be used to replace the intelligent control device for further adjustments. 5. Upgrading a regular manual balance valve to the aforementioned intelligent regulating valve can significantly reduce initial investment; 6. The flow rate of heating hot water can be monitored and adjusted before the start of heating to reduce complaints later. Attached Figure Description

[0012] Figure 1 : A schematic diagram of the appearance of the intelligent regulating valve; Figure 2 : A schematic diagram of the internal position and structure of the main components of the intelligent regulating valve body; Figure 3 : A schematic diagram of the valve cover of the intelligent regulating valve and its assembly relationship with the regulating valve core; Figure 4 : Schematic diagram of the regulating valve core of the intelligent regulating valve; Figure 5 : A schematic diagram of the appearance of the manual regulating valve.

[0013] Figure Labels 1-Valve body, 2-Regulating valve core, 3-Valve cover, 4-Intelligent control device, 5-Plug, 6-Magnetic lock handle, 101-Inlet, 102-Outlet, 103-Regulating port, 104-Filter port, 105-Water temperature detection port, 1011-Inlet channel, 1021-Outlet channel, 1012-Inlet water pressure detection port, 1022-Outlet water pressure detection port, 201-Water passage groove, 202-Annular groove, 203-Small square column, 204-Slender cylinder, 205-Short and thick cylinder, 301-Square-round dome, 401-Threaded lock nut, 601-Regulating valve core connector, 602-Connecting lock nut. Detailed Implementation

[0014] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1-4 As shown, an intelligent regulating valve for heating pipelines is installed on the heating branch pipelines or main pipelines of a centralized heating system. The branch pipelines are pipelines with a diameter less than or equal to DN32, and the main pipelines are pipelines with a diameter greater than or equal to DN40 and less than or equal to DN65. The intelligent regulating valve includes: a valve body 1, a regulating valve core 2, a valve cover 3, and an intelligent control device 4. Valve body 1 has an inlet 101, an outlet 102, an adjustment port 103, and a filter port 104. An inlet channel 1011 and an outlet channel 1021 are provided between the inlet 101 and the outlet 102. An adjustment port 103 is provided between the inlet channel 1011 and the outlet channel 1021. Valve body 1 also has an inlet pressure detection port 1012, an outlet pressure detection port 1022, and a water temperature detection port 105. The regulating valve core 2 has a water passage groove 201. The regulating valve core 2 is placed in the adjustment port 103 and can rotate horizontally to change the horizontal position of the water passage groove 201, controlling the opening degree of the intelligent regulating valve. The valve cover 3 has a vertical through hole for tightly fitting the regulating valve core 2. The valve cover 3 is connected to the external threads at both ends of the cover body. The regulating port 103 is connected to the intelligent control device 4. The intelligent control device 4 is equipped with an inlet water pressure signal input port, an outlet water pressure signal input port, and a water temperature signal input port. The intelligent control device 4 has the functions of wired receiving, transmitting, and wirelessly sending and receiving heating data signals, and has the functions of displaying heating status parameters including the inlet and outlet water pressure / differential pressure, the water temperature, and the valve opening. The intelligent control device 4 controls the rotation device connected to the regulating valve core 2 through remote automatic operation control, remote manual operation control, on-site non-contact operation control, or local contact operation control to control the horizontal rotation of the regulating valve core 2, thereby changing the horizontal position of the water passage 201 and adjusting the opening of the intelligent regulating valve. A filter screen or filter element is installed in the filter port 104 and sealed by a plug 5 and a sealing element. The filter screen or filter element can be inserted or removed through the filter port 104.

[0016] In the above scheme, the regulating valve core 2 is a specially made column formed by three columns of different thicknesses. The upper end is a small square column 203 connected to the rotating device, the middle section is a slender cylinder 204 with 2 to 4 annular grooves 202 for installing seals, and the lower end is a short and thick cylinder 205 with a water passage groove 201. The water passage groove 201 is a bottom-through parabolic groove on the short and thick cylinder 205. The groove opening width at the bottom of the parabolic groove is ≤90% of the diameter of the short and thick cylinder 205, the groove opening depth at the bottom of the parabolic groove is ≤80% of the diameter of the short and thick cylinder 205, and the groove opening height is ≤80% of the height of the short and thick cylinder 205. One end of the valve cover 3 has an external thread with a sealing surface, which is connected to the regulating port 103 by the thread and a sealing element. The other end has a square-round dome 301 that is tightly connected to the square through groove built into the bottom of the intelligent control device 4. The middle part has an external thread that connects the intelligent control device 4 to the valve cover 3 through a threaded lock nut 401 located at its connection part.

[0017] In the above scheme, the detection port is provided with an internal thread for sealing connection with a water pressure detection connector or a water temperature detection connector provided with a corresponding external thread through a sealing element. The water pressure detection connector is used to connect to a water pressure detection joint, and the water temperature detection connector is used to connect to a water temperature detection joint. The water pressure detection joint is used for water pressure detection in the inlet channel 1011 within the inlet pressure detection port 1012 and the outlet channel 1021 within the outlet pressure detection port 1022. The water temperature detection joint is used for water temperature detection in the water temperature detection port 105. The water pressure detection connector is provided with a rubber-type self-sealing structure or a spring-type self-sealing structure for plug-in or compression fitting type water pressure detection joints. The water temperature detection connector can be plugged into or threaded to fasten the water temperature detection joint with a temperature probe. The water pressure detection connector and the water temperature detection connector are sealed with a pressure resistance of 1.6 MPa. The water pressure testing connector can be inserted / pulled out or snapped / detached from the water pressure testing connector. When the water pressure testing connector is inserted or snapped into the water pressure testing connector, the water pressure test can be performed. When the water pressure testing connector is pulled out or detached, the water pressure testing connector automatically completes the 1.6MPa pressure resistance seal through the rubber self-sealing structure or spring self-sealing structure. When the water temperature testing connector with a temperature probe is inserted or threaded into the water temperature testing connector, the water temperature test can be performed. When the water temperature test is not performed, the water temperature testing connector with a temperature probe can be pulled out or detached. Inserting / pulling out or threading / detaching the water temperature testing connector with a temperature probe does not affect the inherent 1.6MPa pressure resistance seal of the water temperature testing connector. The water pressure detection connector includes an inlet water pressure detection connector and an outlet water pressure detection connector. The outer end of the inlet water pressure detection connector is connected to the inlet water pressure signal input port of the intelligent control device 4 through a water pressure lead connector. The outer end of the outlet water pressure detection connector is connected to the outlet water pressure signal input port of the intelligent control device 4 through a water pressure lead connector. The outer end of the water temperature detection connector is connected to the water temperature signal input port of the intelligent control device 4 through a water temperature lead connector.

[0018] Through the aforementioned access, the intelligent control device 4 can receive the detection signals of the inlet water pressure, the outlet water pressure, and the water temperature, and after processing or storing them, upload the detection signals to the real-time monitoring platform of the centralized heating system and the real-time heating monitoring system of the mobile phone, laptop, or other dedicated terminal device via a wireless network, Bluetooth, or radio frequency transmission system. The detection signals are the basic heating data for controlling the intelligent regulating valve.

[0019] In the above scheme, the valve body 1, regulating valve core 2, and valve cover 3 are made of metallic materials, including copper, aluminum, ductile iron, carbon steel, alloys, and stainless steel, preferably copper and ductile iron, or non-metallic materials, including plastics and composite materials, preferably composite materials. The sealing element is a rubber sealing ring, a plastic sealing ring, or a composite material sealing ring, preferably a rubber sealing ring or a plastic sealing ring.

[0020] In the above scheme, the inlet 101 and outlet 102 have a diameter of DN15, DN20, DN25, or DN32 and are connected to the heating branch pipes of the corresponding diameter via threaded fittings. The inlet 101 and outlet 102 can also have a diameter of DN40, DN50, or DN65 and are connected to the heating main pipes of the corresponding diameter via threaded fittings / flanges. The intelligent control device 4 controls the horizontal rotation of the regulating valve core 2 to change the horizontal position of the water channel 201, thereby adjusting the opening of the intelligent regulating valve and changing the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021, thus controlling the flow rate of hot water passing through the intelligent regulating valve. The nominal pressure of the intelligent regulating valve is 1.6 MPa.

[0021] The specific intelligent control process in a centralized heating system is briefly described below: The intelligent regulating valve has four functions for controlling the flow rate of heating hot water within it.

[0022] The following remote or on-site control of the intelligent control device 4 is all based on the on-site heating data.

[0023] The heating data includes: inlet and outlet water pressure / water pressure difference, water temperature / water temperature difference, valve opening, flow rate, etc., which are heating-related data uploaded to the real-time monitoring platform, mobile phone, laptop computer, and dedicated terminal device by local relevant detection and monitoring devices, including intelligent control device 4.

[0024] 1. Remote automatic operation control Before the heating season, after the circulating water of the centralized heating system is turned on, the real-time monitoring platform of the centralized heating system automatically sends control commands to the intelligent control devices 4 of each intelligent control valve through the wireless network transmission system, based on the design flow rate of the intelligent regulating valves installed on the heating branch or main pipelines and the heating-related data. This ensures that the opening degree of each valve, i.e., the horizontal position of the water passage trough 201 of the regulating valve core 2, meets the design flow rate value or the required empirical flow rate value and remains stable within ±5% of the design flow rate value or the required empirical flow rate value. Within the same system, such as a designated area heating system, the flow rate of all intelligent regulating valves is automatically controlled within the required flow rate value range.

[0025] During the heating season, the real-time monitoring platform of the centralized heating system automatically sends control commands to the intelligent control devices 4 of each intelligent control valve via a wireless network transmission system, based on the design return water temperature or the empirical value of the required return water temperature of the intelligent control valves installed on the heating branch pipes or main pipes. This ensures that the opening degree of each valve, i.e., the horizontal position of the water passage groove 201 of the control valve core 2, meets the requirement that the return water temperature reaches the required value, or that the heat controlled by each intelligent control valve reaches the required value and remains stable within ±10% of the required heat according to the design heat index. Within the same system, such as a designated area heating system, the heat controlled by all intelligent control valves is guaranteed to be within the required value range.

[0026] 2. Remote manual operation and control Before the heating season, after the circulating water of the centralized heating system is turned on, the real-time monitoring platform of the centralized heating system, based on the design flow rate of the intelligent regulating valves installed on the heating branch or main pipelines and the heating-related data, can, in addition to the aforementioned remote automatic operation control, also manually issue control commands to the intelligent control devices 4 of some or all of the intelligent regulating valves via wireless network transmission, respectively / sequentially, by clicking the relevant buttons on the real-time monitoring platform. This ensures that the opening degree of the valves controlled, i.e., the horizontal position of the water passage trough 201 of the regulating valve core 2, meets the design flow rate value or the required empirical flow rate value and remains stable within ±5% of the design flow rate value or the required empirical flow rate value. Within the same system, such as a designated area heating system, the flow rate of some or all of the intelligent regulating valves can be remotely and manually controlled within the required flow rate range.

[0027] During the heating season, the real-time monitoring platform of the centralized heating system can, based on the design return water temperature or the empirical value of the required return water temperature of the intelligent regulating valves installed on the heating branch pipes or main pipes, in addition to the aforementioned remote automatic operation control, also manually issue control commands to the intelligent control devices 4 of some or all of the intelligent regulating valves via wireless network transmission, individually or sequentially, by clicking the relevant buttons on the real-time monitoring platform. This allows the opening degree of the valves controlled, i.e., the horizontal position of the water passage groove 201 of the regulating valve core 2, to meet the required return water temperature value, or to ensure that the heat controlled by some or all of the intelligent regulating valves reaches the required value and remains stable within ±10% of the required heat according to the design heat index. Within the same system, such as a designated area heating system, the heat controlled by some or all of the intelligent regulating valves is guaranteed to be within the required value range.

[0028] 3. On-site non-contact operation control The aforementioned remote automatic or manual operation control can be achieved using a mobile or laptop version of the centralized heating system real-time monitoring platform via wireless network, Bluetooth, or radio frequency transmission technologies. On-site non-contact control can interactively collaborate with the real-time monitoring platform to complete corresponding control operations. On-site non-contact control can also notify the real-time monitoring platform to adjust control methods or related data based on on-site operating conditions, facilitating data recording and updates before and after problem resolution. On-site non-contact control can realize the relevant control functions of the aforementioned real-time monitoring platform.

[0029] 4. Local contact operation control Typically used when dealing with local issues or when the number of intelligent regulating valves requiring control is small, the real-time monitoring platform needs to set the control mode of the intelligent regulating valves requiring local contact control to local control mode. The horizontal position of the regulating valve core 2 through the water channel 201 is adjusted via the manual operation keys of the intelligent regulating device 4 to control the valve opening and hot water flow. Local contact control facilitates on-site problem observation and resolution. Relevant data for on-site problem observation and resolution, including valve opening, inlet and outlet water pressure, water temperature, and flow rate, needs to be uploaded to the real-time monitoring platform, mobile phone, laptop, etc.

[0030] like Figure 5 As shown, a manual regulating valve, when not using the intelligent regulating device 4, can control the horizontal position of the regulating valve core 2 through the water channel 201 by using a substitute manual regulating device to adjust the opening of the manual regulating valve, thereby changing the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021 and thus controlling the flow rate of heating hot water flowing through the manual regulating valve. The manual adjustment device includes a magnetic lock handle 6, a regulating valve core connector 601, a magnetic lock, and a connecting lock nut 602. The regulating valve core connector 601 is fastened to the valve cover 3 via the external thread of the connecting lock nut 602. The magnetic lock handle 6 can be manually engaged or disengaged from the regulating valve core connector 601. When the magnetic lock handle 6 is manually engaged with the regulating valve core connector 601, the magnetic lock is unlocked. At this time, the magnetic lock handle 6 can be rotated through the regulating valve core connector 601 to make the regulating valve core 2 rotate horizontally, changing the horizontal position of its water passage 201. When the magnetic lock handle 6 is manually disengaged from the regulating valve core connector 601, the magnetic lock is engaged, and the regulating valve core connector 601 is locked, preventing the regulating valve core 2 from rotating and thus preventing the horizontal position of its water passage 201 from changing. The manual adjustment device cannot be operated when the magnetic lock is engaged. The nominal pressure of the manual regulating valve is 1.6 MPa.

[0031] The specific manual control process in a centralized heating system is briefly described below: The manual regulating valve control is typically performed when one or more regulating valves experience heating problems during the heating season after the intelligent regulating valve has been adjusted and the intelligent regulating device 4 has been removed. Based on or referencing relevant data detected on-site, including the inlet and outlet water pressure, return water temperature, or supply water temperature of the manual regulating valve, the horizontal position of the water passage 201 of the regulating valve core 2 is adjusted via the manual regulating device to increase or decrease the heating hot water flow of the manual regulating valve. Specifically, after the magnetic lock handle 6 is fitted onto the regulating valve core connector 601, the magnetic lock is unlocked. Rotating the magnetic lock handle 6 can adjust the horizontal position of the water passage 201 of the regulating valve core 2 through the regulating valve core connector 601, changing its valve opening and thus regulating the heating hot water flow. After adjustment, the magnetic lock handle 6 is manually removed from the regulating valve core connector 601, locking the magnetic lock. The adjusted valve opening is locked and cannot be controlled, preventing accidental operation or other human factors from changing its opening. The relevant data also includes heating data provided by local relevant detection and monitoring devices and their uploads to the real-time monitoring platform, mobile phones, laptops, and dedicated terminal devices.

[0032] In the intelligent control and manual control schemes described above, the rotation angle of the regulating valve core 2 through the water groove 201 in the horizontal position of the regulating valve is 0°~180°, the valve of the regulating valve is 0° when fully open, and 90°~180° when fully closed. The valve opening degree is marked as 0~100%.

[0033] The intelligent control and manual control described above, which control the opening of the intelligent regulating valve and the manual regulating valve, i.e., the horizontal position (rotation angle) of the regulating valve core 2 through the water channel 201, thereby controlling the flow rate of heating hot water through the intelligent regulating valve and the manual regulating valve, are accomplished by using existing calculation formulas for water pressure difference, water temperature / water temperature difference, flow rate, heat, and valve-related parameters, as well as existing detection and monitoring, wireless transmission, signal conversion, data processing, and even combining engineering experience.

[0034] Example 1 like Figures 1-4As shown, an intelligent regulating valve for heating pipelines is installed on the DN20 inlet and outlet water pipes of a centralized heating system in residential areas. The intelligent regulating valve includes: a valve body 1, a regulating valve core 2, a valve cover 3, and an intelligent control device 4. The valve body 1 has an inlet 101, an outlet 102, a regulating port 103, and a filter port 104. An inlet channel 1011 and an outlet channel 1021 are provided between the inlet 101 and the outlet 102. A regulating port 103 is provided between the inlet channel 1011 and the outlet channel 1021. The inlet 101 and the outlet 102 have a diameter of DN20 and are connected to the DN20 inlet and outlet water pipes via threaded fittings. The regulating port 103 and the filter port 104 have a diameter of DN20. The valve body 1 also has an inlet pressure detection port 1012, an outlet pressure detection port 1022, and a water temperature detection port 105. The regulating valve core 2 is provided with a water passage groove 201. The regulating valve core 2 is placed in the regulating port 103 and can rotate horizontally to change the horizontal position of the water passage groove 201 to control the opening of the regulating valve. The valve cover 3 is provided with a vertical through hole for tightly fitting the regulating valve core 2. The valve cover 3 is connected to the regulating port 103 and the intelligent control device 4 respectively through the external threads at both ends of the cover body. The intelligent control device 4 is provided with an inlet water pressure signal input port, an outlet water pressure signal input port and a water temperature signal input port. The intelligent control device 4 has the functions of wired receiving, transmitting and wireless sending and receiving of heating data signals, and also has the functions of displaying heating status parameters including the inlet and outlet water pressure / pressure difference, the water temperature and the valve opening. The intelligent control device 4 controls the rotation device connected to the regulating valve core 2 through remote automatic operation control, remote manual operation control, on-site non-contact operation control or local contact operation control to control the horizontal rotation of the regulating valve core 2 to change the horizontal position of the water passage groove 201 and adjust the opening of the intelligent regulating valve. A filter screen is installed inside the filter port 104 and sealed by a threaded plug 5 and a rubber sealing ring. The filter screen can be inserted or removed through the filter port 104.

[0035] In this embodiment, the regulating valve core 2 is a specially made column formed by three columns of different thicknesses. The upper end is a small square column 203 connected to the rotating device, the middle section is a slender cylinder 204 with two annular grooves 202 for installing rubber sealing rings, and the lower end is a short and thick cylinder 205 with a water passage groove 201. The water passage groove 201 is a bottom-through parabolic groove on the short and thick cylinder 205. The width of the groove opening at the bottom of the parabolic groove is 60% of the diameter of the short and thick cylinder 205, the depth of the groove opening at the bottom of the parabolic groove is 80% of the diameter of the short and thick cylinder 205, and the height of the groove opening is 80% of the height of the short and thick cylinder 205. One end of the valve cover 3 has an external thread with a sealing surface, which is sealed to the adjustment port 103 by the thread and a rubber sealing ring. The other end has a square-round dome 301 that is tightly connected to the square through groove built into the bottom of the intelligent control device 4. The middle part has an external thread that connects the intelligent control device 4 to the valve cover 3 through the threaded lock nut 401 of its connection part.

[0036] In this embodiment, the detection port has an internal thread for sealing connection with a water pressure detection connector or a water temperature detection connector with a corresponding external thread via a rubber sealing ring. The water pressure detection connector is used to connect to a water pressure detection joint, and the water temperature detection connector is used to connect to a water temperature detection joint. The water pressure detection joint is used for water pressure detection in the inlet channel 1011 of the inlet pressure detection port 1012 and the outlet channel 1021 of the outlet pressure detection port 1022. The water temperature detection joint is used for water temperature detection in the water temperature detection port 105. The water pressure detection connector has a rubber self-sealing structure for plug-and-play water pressure detection joints, and the water temperature detection connector can be plugged into a water temperature detection joint with a temperature probe. The water pressure detection connector and the water temperature detection connector are sealed to withstand a pressure of 1.6 MPa. The water pressure testing connector can be inserted into or removed from the water pressure testing connector. When inserted, the water pressure test can be performed. When removed, the water pressure testing connector automatically achieves the 1.6MPa pressure resistance seal. When the water temperature testing connector with a temperature probe is inserted into the water temperature testing connector, the water temperature test can be performed. When not performing the water temperature test, the water temperature testing connector with the temperature probe can be removed. Inserting or removing the water temperature testing connector with the temperature probe does not affect the inherent 1.6MPa pressure resistance seal of the water temperature testing connector. The water pressure testing connector includes an inlet pressure testing connector and an outlet pressure testing connector. The outer end of the inlet pressure testing connector is connected to the inlet pressure signal input port of the intelligent control device 4 via a water pressure lead connector. The outer end of the outlet pressure testing connector is connected to the outlet pressure signal input port of the intelligent control device 4 via a water pressure lead connector. The outer end of the water temperature testing connector is connected to the water temperature signal input port of the intelligent control device 4 via a water temperature lead connector.

[0037] like Figure 5As shown, a manual regulating valve, when not using the intelligent regulating device 4, can adjust the opening of the manual regulating valve by controlling the horizontal position of the water channel 201 of the regulating valve core 2 through a substitute manual regulating device. This can change the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021, thereby controlling the flow rate of heating hot water through the manual regulating valve installed on the DN20 inlet and outlet water pipe. The manual regulating device includes a magnetic lock handle 6, a regulating valve core connector 601, a magnetic lock, and a connecting lock nut 602. The regulating valve core connector 601 is fastened to the external thread in the middle of the valve cover 3 by the connecting lock nut 602. The magnetic lock handle 6 can be manually engaged or disengaged from the regulating valve core connector 601. When the magnetic lock handle 6 is manually engaged with the regulating valve core connector 601, the magnetic lock is unlocked. At this time, the magnetic lock handle 6 can be rotated to manually control the horizontal rotation of the regulating valve core 2 through the regulating valve core connector 601 to adjust the water channel 2. The horizontal position of 01 changes the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021, thereby controlling the flow rate of heating hot water through the manual regulating valve installed on the DN20 inlet and outlet water pipe; when the magnetic lock handle 6 is manually removed from the regulating valve core connector 601, the magnetic lock is locked, the regulating valve core connector 601 is locked and the regulating valve core 2 cannot rotate, so that the horizontal position of its water passage 201 cannot be changed; when the magnetic lock is locked, the manual regulating device cannot be operated.

[0038] In this embodiment, the valve body 1, regulating valve core 2, and valve cover 3 are made of copper.

[0039] In this embodiment, when the rotation angle of the regulating valve core 2 through the water groove 201 in the horizontal position is ≥90°, the valve is completely closed and the valve opening is 0. When the rotation angle of the regulating valve core 2 through the water groove 201 in the horizontal position is 0°, the valve is completely open and the valve opening is 100%.

[0040] Example 2 like Figures 1-4As shown, an intelligent regulating valve for heating pipelines is installed on the inlet and return water pipelines with a diameter of DN32 in residential areas, villa areas, or office buildings with a heating area greater than 200 square meters in a centralized heating system. The intelligent regulating valve includes: a valve body 1, a regulating valve core 2, a valve cover 3, and an intelligent control device 4. The valve body 1 has an inlet 101, an outlet 102, a regulating port 103, and a filter port 104. An inlet channel 1011 and an outlet channel 1021 are provided between the inlet 101 and the outlet 102. A regulating port 103 is provided between the inlet channel 1011 and the outlet channel 1021. The inlet 101 and the outlet 102 have a diameter of DN32 and are connected to the DN32 inlet and return water pipelines via threaded fittings. The regulating port 103 and the filter port 104 have a diameter of DN32. The valve body 1 also has an inlet pressure detection port 1012, an outlet pressure detection port 1022, and a water temperature detection port 105. The regulating valve core 2 is provided with a water passage groove 201. The regulating valve core 2 is placed in the regulating port 103 and can rotate horizontally to change the horizontal position of the water passage groove 201 to control the opening of the intelligent regulating valve. The valve cover 3 is provided with a vertical through hole for tightly fitting the regulating valve core 2. The valve cover 3 is connected to the regulating port 103 and the intelligent control device 4 respectively through the external threads at both ends of the cover body. The intelligent control device 4 is provided with an inlet water pressure signal input port, an outlet water pressure signal input port and a water temperature signal input port. The intelligent control device 4 has the function of wired receiving, transmitting and wireless sending and receiving of heating data signals, and has the function of displaying the heating status including the inlet and outlet water pressure / pressure difference, the water temperature and the valve opening. The intelligent control device 4 controls the rotation device connected to the regulating valve core 2 to control the horizontal rotation of the regulating valve core 2 to change the horizontal position of the water passage groove 201 and adjust the opening of the intelligent regulating valve through remote automatic operation control, remote manual operation control, on-site non-contact operation control or local contact operation control. A filter element is installed inside the filter port 104 and sealed by a plug 5 and a PTFE sealing ring. The filter element can be inserted or removed through the filter port 104.

[0041] In this embodiment, the regulating valve core 2 is a specially made column formed by three columns of different thicknesses. The upper end is a small square column 203 connected to the rotating device, the middle section is a slender cylinder 204 with three annular grooves 202 for installing rubber sealing rings, and the lower end is a short and thick cylinder 205 with a water passage groove 201. The water passage groove 201 is a bottom-through parabolic groove on the short and thick cylinder 205. The width of the groove opening at the bottom of the parabolic groove is 70% of the diameter of the short and thick cylinder 205, the depth of the groove opening at the bottom of the parabolic groove is 70% of the diameter of the short and thick cylinder 205, and the height of the groove opening is 70% of the height of the short and thick cylinder 205. One end of the valve cover 3 has an external thread with a sealing surface, which is sealed to the regulating port 103 by the thread and a PTFE sealing ring. The other end has a square-round dome 301 that is tightly connected to the square through groove built into the bottom of the intelligent control device 4. The middle part has an external thread that connects the intelligent control device 4 to the valve cover 3 through the threaded lock nut 401 of its connection part.

[0042] In this embodiment, the detection port has an internal thread for sealing connection with a water pressure detection connector or a water temperature detection connector with a corresponding external thread via a rubber sealing ring. The water pressure detection connector is used to connect to a water pressure detection joint, and the water temperature detection connector is used to connect to a water temperature detection joint. The water pressure detection joint is used for water pressure detection in the inlet channel 1011 of the inlet pressure detection port 1012 and the outlet channel 1021 of the outlet pressure detection port 1022. The water temperature detection joint is used for water temperature detection in the water temperature detection port 105. The water pressure detection connector has a spring-loaded self-sealing structure for clamping the water pressure detection joint. The water temperature detection connector can thread-fasten the water temperature detection joint with a temperature probe. The water pressure detection connector and the water temperature detection connector are sealed with a pressure resistance of 1.6 MPa. The water pressure testing connector can be snapped onto or detached from the water pressure testing connector. When snapped onto the water pressure testing connector, water pressure testing can be performed. When detached from the water pressure testing connector, the water pressure testing connector automatically achieves the 1.6MPa pressure resistance seal. When the water temperature testing connector with a temperature probe is threadedly tightened onto the water temperature testing connector, water temperature testing can be performed. When not performing water temperature testing, the water temperature testing connector with the temperature probe can be detached. Tightening or detaching the water temperature testing connector with the temperature probe does not affect the inherent 1.6MPa pressure resistance seal of the water temperature testing connector. The water pressure testing connector includes an inlet pressure testing connector and an outlet pressure testing connector. The outer end of the inlet pressure testing connector is connected to the inlet pressure signal input port of the intelligent control device 4 via a water pressure lead connector. The outer end of the outlet pressure testing connector is connected to the outlet pressure signal input port of the intelligent control device 4 via a water pressure lead connector. The outer end of the water temperature testing connector is connected to the water temperature signal input port of the intelligent control device 4 via a water temperature lead connector.

[0043] like Figure 5As shown, a manual regulating valve, when not using the intelligent regulating device 4, can adjust the opening of the manual regulating valve by controlling the horizontal position of the water passage 201 of the regulating valve core 2 through a substitute manual regulating device. This can change the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021, thereby controlling the flow rate of heating hot water through the manual regulating valve installed on the DN32 inlet and outlet water pipe. The manual regulating device includes a magnetic lock handle 6, a regulating valve core connector 601, a magnetic lock, and a connecting lock nut 602. The regulating valve core connector 601 is fastened to the external thread in the middle of the valve cover 3 by the connecting lock nut 602. The magnetic lock handle 6 can be manually engaged or disengaged from the regulating valve core connector 601. When the magnetic lock handle 6 is manually engaged with the regulating valve core connector 601, the magnetic lock is unlocked. At this time, the magnetic lock handle 6 can be rotated to manually control the horizontal rotation of the regulating valve core 2 through the regulating valve core connector 601 to adjust its water passage. The horizontal position of 201 changes the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021, thereby controlling the flow rate of heating hot water through the manual regulating valve installed on the DN32 inlet and outlet water pipe; when the magnetic lock handle 6 is manually removed from the regulating valve core connector 601, the magnetic lock is locked, the regulating valve core connector 601 is locked and the regulating valve core 2 cannot rotate, so that the horizontal position of its water passage 201 cannot be changed; when the magnetic lock is locked, the manual regulating device cannot be operated.

[0044] In this embodiment, the valve body 1 is made of ductile iron, and the regulating valve core 2 and valve cover 3 are made of copper.

[0045] In this embodiment, when the rotation angle of the regulating valve core 2 through the water groove 201 in the horizontal position is ≥100°, the valve is completely closed and the valve opening is 0. When the rotation angle of the regulating valve core 2 through the water groove 201 in the horizontal position is 0°, the valve is completely open and the valve opening is 100%.

[0046] The intelligent control device 4 in Embodiment 1 or Embodiment 2 controls the horizontal rotation of the regulating valve core 2 through remote automatic operation control, remote manual operation control, on-site non-contact operation control, or local contact operation control. This changes the horizontal position of the water passage 201 and adjusts the opening of the intelligent regulating valve. It can change the flow area or flow diameter from the inlet channel 1011 to the outlet channel 1021, thereby controlling the flow rate of heating hot water through the intelligent regulating valve installed on the DN20 inlet / outlet water pipe or the DN32 inlet / outlet water pipe.

[0047] For the specific intelligent control process of the intelligent regulating valve described in Embodiment 1 or Embodiment 2, please refer to the aforementioned relevant content.

[0048] For the specific manual control process of the manual regulating valve in Embodiment 1 or Embodiment 2, please refer to the aforementioned relevant content.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included within the protection scope of the present invention.

Claims

1. A smart regulating valve for a heating pipeline, wherein the smart regulating valve is installed on the heating pipeline of a centralized heating system, characterized in that: The intelligent regulating valve includes: a valve body, a regulating valve core, a valve cover, and an intelligent regulating device. The valve body has an inlet, an outlet, a regulating port, and a filter port. An inlet channel and an outlet channel are provided between the inlet and the outlet. The regulating port is provided between the inlet channel and the outlet channel. The valve body has an inlet pressure detection port, an outlet pressure detection port, and a water temperature detection port. The regulating valve core has a water passage groove. The regulating valve core is placed in the regulating port and can rotate horizontally to change the horizontal position of the water passage groove to control the opening of the regulating valve. The valve cover has a vertical through hole for tightly fitting the regulating valve core. The valve cover is connected to the regulating port and the intelligent regulating device respectively through external threads at both ends of the cover body. The control device is equipped with an inlet water pressure signal input port, an outlet water pressure signal input port, and a water temperature signal input port. The intelligent control device has the functions of wired receiving, transmitting, and wirelessly sending and receiving heating data signals, and also has the functions of displaying heating parameters including the inlet and outlet water pressure / differential pressure, the water temperature, and the valve opening. The intelligent control device controls its rotating device connected to the regulating valve core through remote automatic operation control, remote manual operation control, on-site non-contact operation control, or local contact operation control, thereby controlling the horizontal rotation of the regulating valve core, changing the horizontal position of the water passage, and controlling the opening of the regulating valve. A filter element is installed in the filter port and sealed with a plug and a sealant.

2. The intelligent regulating valve according to claim 1, characterized in that: The regulating valve core is a specially designed column formed by three columns of different thicknesses. The upper end is a small square column that connects to the rotating device. The middle section is a slender cylinder with 2-4 annular grooves for installing seals. The lower end is a short, thick cylinder with the water passage groove. The water passage groove is a through-bottom parabolic groove on the short, thick cylinder. The groove opening width at the bottom of the parabolic groove is ≤90% of the diameter of the short, thick cylinder, the groove opening depth at the bottom of the parabolic groove is ≤80% of the diameter of the short, thick cylinder, and the groove opening height is ≤80% of the height of the short, thick cylinder. One end of the valve cover has an external thread with a sealing surface that is sealed to the regulating port through threads and seals. The other end has a square-round dome that is tightly connected to the square through groove built into the bottom of the intelligent control device. The middle part has an external thread that connects the intelligent control device to the valve cover through a threaded lock nut.

3. The intelligent regulating valve according to claim 1, characterized in that: The valve body, regulating valve core, and valve cover are made of metallic materials including copper, ductile iron, carbon steel, alloys, and stainless steel, or non-metallic materials including plastics and composite materials.

4. The intelligent regulating valve according to claim 1, characterized in that: The filter element can be inserted or removed through the filter port, and the filter element is a filter screen or a filter core.

5. The intelligent regulating valve according to claim 1, characterized in that: The detection port is provided with an internal thread for sealing connection with a water pressure detection connector or a water temperature detection connector provided with a corresponding external thread through a sealing element. The water pressure detection connector is used to connect to the water pressure detection joint, and the water temperature detection connector is used to connect to the water temperature detection joint. The water pressure detection joint is used for water pressure detection in the inlet channel and the outlet channel, and the water temperature detection joint is used for water temperature detection inside the valve.

6. The intelligent regulating valve according to claim 1, 2, or 5, characterized in that: The sealing element is a rubber sealing ring, a plastic sealing ring, or a composite material sealing ring.

7. The intelligent regulating valve according to claim 5, characterized in that: The water pressure testing connector is equipped with a rubber-type self-sealing structure or a spring-type self-sealing structure for plug-in or compression fitting of the water pressure testing connector. The water temperature testing connector can be plugged into or threaded to fasten the water temperature testing connector with a temperature probe. The water pressure testing connector and the water temperature testing connector are sealed and pressure-resistant to 1.6 MPa.

8. The intelligent regulating valve according to claim 1, 5, or 7, characterized in that: The water pressure testing connector can be inserted into / pulled out or snapped into / removed from the water pressure testing connector. When the water pressure testing connector is pulled out or removed, the water pressure testing connector automatically completes the 1.6MPa pressure resistance seal. The water pressure testing connector includes an inlet water pressure testing connector and an outlet water pressure testing connector. The outer end of the inlet water pressure testing connector is connected to the inlet water pressure signal input port through a water pressure lead connector. The outer end of the outlet water pressure testing connector is connected to the outlet water pressure signal input port through a water pressure lead connector. The outer end of the water temperature testing connector is connected to the water temperature signal input port through a water temperature lead connector.

9. The intelligent regulating valve according to any one of claims 1 to 8, characterized in that: The inlet and outlet have a diameter of DN15, DN20, DN25, or DN32 and are connected to the heating pipeline of the corresponding diameter via threaded fittings. The inlet and outlet can also have a diameter of DN40, DN50, or DN65 and are connected to the heating pipeline of the corresponding diameter via threaded fittings / flanges. The intelligent control device controls the opening of the intelligent control valve by controlling the horizontal rotation of the regulating valve core to change the horizontal position of the water channel, thereby changing the flow area or flow diameter from the inlet channel to the outlet channel and thus controlling the flow rate of hot water flowing through the intelligent control valve. The nominal pressure of the intelligent control valve is 1.6 MPa.

10. A manually adjustable valve, characterized in that: When the intelligent control device is not used, the horizontal position of the water passage of the regulating valve core can be adjusted by a substitute manual adjustment device to control the opening of the manual regulating valve, thereby changing the flow area or flow diameter from the inlet channel to the outlet channel and thus controlling the flow rate of hot water through the manual regulating valve. The manual adjustment device includes a magnetic lock handle, a regulating valve core connector, a magnetic lock, and a connecting lock nut. The regulating valve core connector is fastened to the external thread in the middle of the valve cover by the connecting lock nut. The magnetic lock handle can be manually engaged or disengaged from the regulating valve core connector. When the magnetic lock handle is manually engaged with the regulating valve core connector, the magnetic lock is unlocked. At this time, the magnetic lock handle can be rotated to adjust the horizontal position of the regulating valve core water passage through the regulating valve core connector. When the magnetic lock handle is manually removed from the regulating valve core connector, the magnetic lock is locked, and the regulating valve core connector is locked, preventing adjustment of the horizontal position of the regulating valve core water passage. In the locked state, the regulating valve core cannot be rotated, and the manual adjustment device cannot be operated. The nominal pressure of the manual regulating valve is 1.6 MPa.

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