Uncoupled two-network balance control method

Abstract

The present invention discloses a non-coupled two-network balance control method, which is characterized in that when the flow rate of the user's indoor pipeline suddenly increases due to an accident, the anti-leakage safety valve immediately closes the water supply circuit and stops heating. At the same time, the check valve arranged on the return water pipeline also shuts off its return water pipeline. During the period when the anti-leakage safety valve is closed and the supply is stopped, the control unit senses that the anti-leakage safety valve has been closed and will immediately issue an instruction to close the flow distribution valve. After the user completes the above actions, the pressure at both ends of the anti-leakage safety valve gradually tends to be balanced, and the anti-leakage safety valve will automatically open; after the anti-leakage safety valve is opened, the control unit instructs the flow distribution valve to open and resume normal heating, thereby completing an automatic anti-leakage water cycle. Due to the adoption of the above method, the present invention completely solves the two-network balance problem.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent heating equipment, and in particular to a non-coupled two-network balance control method. Background Art

[0002] As we all know, water loss in heating systems and imbalances in the secondary network have always been difficult problems for heating companies. For example, a small city with a heating area of ​​less than 60 million square meters loses 2.7 million tons of water annually. At a cost of 20 yuan per ton, this translates to an annual loss of 54 million yuan. While the water loss rate is relatively low, less than 0.4% (as high as 6% in some cities), the losses are significant. Traditional solutions involve adding odorants to the water or increasing staffing, but these solutions have proven ineffective.

[0003] When the secondary grid is unbalanced, meaning uneven heating and cooling, users facing cold weather can only complain, drain heating water, or illegally install pipe circulation pumps. Meanwhile, users experiencing hot weather simply open windows to dissipate heat, resulting in significant energy waste. To reduce complaints, the traditional solution is to increase heating supply, regardless of the resulting energy waste. According to official statistics, energy losses caused by the imbalance in the secondary grid in my country are staggeringly high, two to four times that of European countries at the same latitude. Balancing the secondary grid is urgent.

[0004] In response to the serious reality of imbalance in the secondary network, many heating companies have begun to attempt to balance the secondary network through building or unit control. While this hasn't completely solved the problem, it has certainly had some positive effects. However, if water loss in the heating system isn't fundamentally addressed, balancing the secondary network remains a distant dream. Summary of the Invention

[0005] This invention, using three simple valves, completely solves the decades-long problems of system water loss and secondary network balancing. It provides a non-coupling secondary network balancing control method for low-carbon urban heating operation, with a short payback period, reliable and convenient operation, energy conservation, and a visible carbon footprint.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A non-coupling two-network balance control method comprises a water inlet pipeline (1), a water return pipeline (2), a control unit (3), an anti-leakage safety valve (4), a check valve (5), a flow distribution valve (6) and an indoor pipeline (7), wherein the water inlet pipeline (1) is connected to the inlet of the indoor pipeline (7) via the anti-leakage safety valve (4), the outlet of the indoor pipeline (7) is connected to the water return pipeline (2) via the flow distribution valve (6) and the check valve (5), and the flow distribution valve (6) is electrically connected to the control unit (3). The method is characterized in that when the flow rate of the indoor pipeline (7) suddenly increases due to unauthorized water discharge, unauthorized pumping, or accidental leakage in the user's indoor pipeline (7), the anti-leakage safety valve (4) immediately closes the water supply circuit and stops heating, and at the same time, the check valve (5) arranged on the return pipeline (2) also shuts off its return pipeline (2) to ensure that the system does not lose water;

[0008] During the period when the anti-leakage safety valve (4) is closed and the supply is stopped, the control unit (3) senses that the anti-leakage safety valve (4) has been closed through the pressure sensor and / or temperature sensor installed in the pipeline, and immediately issues an instruction to close the flow distribution valve (6). The flow distribution valve is closed to wait for the user to close the tap that is discharging water or shut down the circulating pump installed privately or repair the damaged indoor pipeline (7).

[0009] When the user completes the above-mentioned actions, the pressures at both ends of the anti-leakage safety valve (4) gradually tend to be balanced, and the anti-leakage safety valve (4) will automatically open;

[0010] After the anti-leakage safety valve (4) is opened, the control unit (3) instructs the flow distribution valve (6) to open and resume normal heating, thereby completing an automatic anti-leakage cycle. The entire process does not require human intervention; it not only completely eliminates the problem of heating water loss caused by unauthorized water discharge, unauthorized pumping, or accidental leakage in the indoor pipeline (7), but also completely solves the problem of imbalance between the two networks.

[0011] like Figure 2 As shown, the control unit (3) of the present invention is installed on the flow distribution valve (6), is mechanically connected to the flow distribution valve (6), and is connected to the water supply temperature sensor, the return water temperature sensor, and the indoor temperature controller by electrical signals. The control unit (3) performs edge computing on the collected external information and the superior instruction to control the opening of the flow distribution valve (6) to adjust the flow (heat) required by the user; and controls the opening and closing of the flow distribution valve (6) to realize the automatic opening of the anti-leakage safety valve (4) and restore normal heating.

[0012] The flow distribution valve (6) of the present invention is composed of a static flow balancing valve, a pressure differential controller and an electric flow regulating valve. The electric flow regulating valve includes a valve body (6-1), a valve stem (6-2), a valve stem actuator, a return spring (6-4), a spring top cover (6-5), a valve core (6-6), a valve cover (6-7) and a valve sleeve (6-8). The static flow balancing valve includes a balancing piston (6-9) and a balancing spring (6-10). The pressure differential controller includes a fixed valve plate (6-12), a movable valve plate (6-13) and a valve seat (6-16). One end of the valve body (6-1) is connected to the water outlet of the indoor pipeline (7), and the other end is connected to the return water pipeline (2). The upper end of the valve body (6-1) is connected to the valve through the valve cover (6-7). The housing of the stem actuator is fixedly connected, the valve stem (6-2) can axially move through the valve sleeve (6-8) and the pressure balance chamber and the valve seat (6-16) fixedly provided in the valve cover (6-7) through the sealing component, and its lower end is fixedly connected to the valve core (6-6), the upper part of the valve stem (6-2) is fixedly connected to the spring top cover (6-5), and its upper end is connected to the valve stem actuator, the upper end of the return spring (6-4) contacts the spring top cover (6-5), and the lower end contacts the lower end surface of the valve cover (6-7), the outer wall of the spring top cover is axially slidably connected to the slideway provided on the inner wall of the valve cover via a slider, the valve core is located at the upper end of the valve port and corresponds to the valve port, a throttle valve is provided at the front end of the valve core, and a valve seat (6-16) is sleeved around the outer periphery of the valve core (6-6) , a water outlet is provided on the side wall of the valve seat (6-16), the upper end of the valve seat (6-16) is axially movably connected to the valve stem (6-2), and the lower end is in conflict with the connection port of the valve body (6-1), the valve seat (6-16) extends axially along the valve stem (6-2) toward the outside of the valve core (6-6), and the throttle valve is located in the valve seat (6-16), and the throttle valve is composed of a matching fixed valve plate (6-12) and a movable valve plate (6-13), and the fixed valve plate (6-12) and the movable valve plate (6-13) are respectively arc-shaped, and the fixed valve plate (6-12) is fixed on the valve core (6-6), and the movable valve plate passes through the rotating hole provided on the valve core (6-6) and is fixedly connected to the valve stem (6-2) via a connecting piece, and the lower end and the fixed valve plate are connected. (6-12) is axially extended in the valve seat (6-16) away from the valve core (6-6), the axis of the movable valve disc (6-13) and the fixed valve disc (6-12) are the same, and one end of the movable valve disc (6-13) can rotate along one end of the fixed valve disc (6-12) toward the inner wall of the fixed valve disc. When the movable valve disc (6-13) and the fixed valve disc (6-12) are arranged relative to each other, the two ends of the movable valve disc (6-13) are respectively connected to the two ends of the fixed valve disc (6-12), so as to facilitate the adjustment of the opening width in the width direction of the water outlet by rotating the valve stem (6-2) to drive the movable valve disc (6-13) to rotate relative to the fixed valve disc (6-12), and realize the opening and closing of the valve core and the valve port by the axial linear movement of the valve stem (6-2).The return of the valve stem (6-2) is accelerated by the return spring (6-4), and the water outlet is connected to the return water pipeline (2), so as to facilitate the adjustment of the flow rate of the indoor pipeline (7) and the return water pipeline (2). The valve stem (6-2) in the pressure balance chamber is axially movable and is sleeved with a balance piston (6-9). The outer wall of the balance piston (6-9) is sealed with the pressure balance chamber through a sealing component and is axially movable. The inner wall is sealed with the valve sleeve through a sealing ring and is axially movable. The outer periphery of the lower end of the balance piston (6-9) is sealed with the valve sleeve through a sealing ring and is axially movable. A valve cover is formed by extending axially toward the valve core. The balancing piston (6-9) divides the pressure balancing chamber into an upper piston chamber (6-17) and a lower piston chamber (6-18). A balancing spring (6-10) is provided in the lower piston chamber (6-18). The upper end of the balancing spring (6-10) contacts the bottom surface of the balancing piston (6-9), and the lower end contacts the valve seat (6-16). The lower end of the valve stem (6-2) is provided with a water inlet hole (6-11) leading to the upper piston chamber (6-17), so as to facilitate the flow of water through the water inlet hole (6-11). ) The water of the indoor pipeline is introduced into the upper chamber of the piston (6-17), and the hydraulic balance is achieved by the up and down movement of the balancing piston to prevent the hydraulic force of the indoor pipeline from increasing due to the private addition of a pump. The increased water flows into the upper chamber of the piston through the water inlet hole, and the high-pressure water presses the balancing piston downward. The valve cover at the lower end of the balancing piston gradually moves downward under the thrust of the water in the upper chamber of the piston to block the water outflow of the openings of the fixed valve plate and the movable valve plate, so that the water outflow in the indoor pipeline gradually decreases, thereby blocking the flow between users and between users and users. The hydraulic coupling between the heating stations ensures a complete balance between the two networks and maintains a constant pressure differential across the static flow balancing valve. The flow in the indoor pipelines is adjusted by the mutual movement of the movable valve disc (6-13) and the fixed valve disc (6-12). When the flow is set, the static flow balancing valve, the differential pressure controller, and the electric flow control valve work together to output a deterministic flow value that is unaffected by system pressure fluctuations. This allows users to independently adjust their home temperature, reducing complaints and eliminating waste.

[0013] The present invention can provide an adjusting sleeve (6-14) and a locking nut (6-15) on the upper part of the valve stem, the adjusting sleeve (6-14) and the valve stem can be axially movably connected, the locking nut (6-15) is threadedly connected to the valve stem, the upper end of the adjusting sleeve (6-14) is connected to the locking nut (6-15), and the lower end is connected to the spring top cover (6-5), and the adjusting sleeve and the valve cover are clearance-matched, so that by rotating the adjusting sleeve (6-14), the valve stem (6-2) can be rotated conveniently and quickly to adjust the water outlet width of the movable valve plate and the fixed valve plate.

[0014] The sealing component of the present invention can be an elastic sealing diaphragm or an O-type sealing ring, so as to extend the sealing performance between the balancing piston and the balancing chamber.

[0015] The elastic sealing diaphragm of the present invention is preferably made of a wear-resistant rubber material, or a wear-resistant cloth-reinforced rubber material, or a corrugated sleeve.

[0016] The anti-leakage safety valve (4) described in the present invention has been patented and will not be described in detail here.

[0017] The check valve (5) of the present invention adopts a low-resistance check valve (5) to improve the sensitivity of the check valve and prevent hot water from flowing back.

[0018] The present invention can be provided with an inlet water temperature sensor on the inlet water pipe (1) and a return water temperature sensor on the return water pipe (2). The inlet water temperature sensor and the return water temperature sensor are respectively connected to a control unit (3) so that the indoor heating system operates within the most economical supply and return water temperature difference range, and can also be used to replace heat meters to reduce investment.

[0019] The present invention completely solves the problem of balancing the two networks by adopting the above-mentioned method. Verification by a large number of applications has shown that the control method of the present invention can save 26% of heat, 40% of circulating water flow, 34% of electricity consumption, and a large amount of odor additive expenses in the heating system. The water loss rate at the household end is almost zero, and the comprehensive benefit rate can reach more than 30%. It is currently the most thorough and cost-effective non-coupled two-network balancing control method for solving the heating problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the flow distribution valve (6) of the present invention.

[0022] Figure numerals: water inlet pipe (1), water return pipe (2), control unit (3), anti-leakage safety valve (4), check valve (5), flow distribution valve (6), valve body (6-1), valve stem (6-2), return spring (6-4), spring top cover (6-5), valve core (6-6), valve cover (6-7), valve sleeve (6-8), balancing piston (6-9), balancing spring (6-10), water inlet hole (6-11), fixed valve plate (6-12), movable valve plate (6-13), adjusting sleeve (6-14), locking nut (6-15), valve seat (6-16), piston upper chamber (6-17), piston lower chamber (6-18), indoor pipe (7). DETAILED DESCRIPTION

[0023] The present invention will be described below with reference to the accompanying drawings and embodiments.

[0024] As attached Figure 1As shown, a non-coupled two-network balance control method comprises a water inlet pipeline (1), a return water pipeline (2), a control unit (3), an anti-leakage safety valve (4), a check valve (5), a flow distribution valve (6) and an indoor pipeline (7), wherein the water inlet pipeline (1) is connected to the inlet of the indoor pipeline (7) via the anti-leakage safety valve (4), the outlet of the indoor pipeline (7) is connected to the return water pipeline (2) via the flow distribution valve (6) and the check valve (5), and the flow distribution valve (6) is electrically connected to the control unit (3). The method is characterized in that when the flow rate of the indoor pipeline (7) suddenly increases due to unauthorized water discharge, unauthorized pumping, or accidental leakage in the user's indoor pipeline (7), the anti-leakage safety valve (4) immediately closes the water supply circuit and stops heating, and at the same time, the check valve (5) arranged on the return water pipeline (2) also shuts off its return water pipeline (2) to ensure that the system does not lose water;

[0025] During the period when the anti-leakage safety valve (4) is closed and the supply is stopped, the control unit (3) senses that the anti-leakage safety valve (4) has been closed through the pressure sensor and / or temperature sensor installed in the pipeline, and immediately issues an instruction to close the flow distribution valve (6). The flow distribution valve is closed to wait for the user to close the tap that is discharging water or shut down the circulating pump installed privately or repair the damaged indoor pipeline (7).

[0026] When the user completes the above-mentioned actions, the pressures at both ends of the anti-leakage safety valve (4) gradually tend to be balanced, and the anti-leakage safety valve (4) will automatically open;

[0027] After the anti-leakage safety valve (4) is opened, the control unit (3) instructs the flow distribution valve (6) to open and resume normal heating, thereby completing an automatic anti-leakage cycle. The entire process does not require human intervention; it not only completely eliminates the problem of heating water loss caused by unauthorized water discharge, unauthorized pumping, or accidental leakage in the indoor pipeline (7), but also completely solves the problem of imbalance between the two networks.

[0028] like Figure 2 As shown, the control unit (3) of the present invention is installed on the flow distribution valve (6), is mechanically connected to the flow distribution valve (6), and is connected to the water supply temperature sensor, the return water temperature sensor, and the indoor temperature controller by electrical signals. The water supply temperature sensor is arranged on the water inlet pipe (1), and the return water temperature sensor is arranged on the return water pipe (2), so that the indoor heating system operates within the most economical supply and return water temperature difference range. It can also be used instead of a heat meter to reduce investment. The control unit (3) calculates the information collected from the water supply temperature sensor, the return water temperature sensor, and the indoor temperature controller and the superior instruction to control the opening of the flow distribution valve (6) to adjust the flow (heat) required by the user; and controls the switch of the flow distribution valve (6) to realize the automatic opening of the anti-leakage safety valve (4) and restore normal heating.

[0029] The flow distribution valve (6) of the present invention is composed of a static flow balancing valve, a pressure differential controller and an electric flow regulating valve. The electric flow regulating valve includes a valve body (6-1), a valve stem (6-2), a valve stem actuator, a return spring (6-4), a spring top cover (6-5), a valve core (6-6), a valve cover (6-7) and a valve sleeve (6-8). The static flow balancing valve includes a balancing piston (6-9) and a balancing spring (6-10). The pressure differential controller includes a fixed valve plate (6-12), a movable valve plate (6-13) and a valve seat (6-16). One end of the valve body (6-1) is connected to the water outlet of the indoor pipeline (7), and the other end is connected to the return water pipeline (2). The upper end of the valve body (6-1) is connected to the water outlet of the indoor pipeline (7) through the valve cover (6- 7) is fixedly connected to the housing of the valve stem actuator, the valve stem actuator is controlled by the control unit, the valve stem (6-2) can axially move through the valve sleeve (6-8) and the pressure balance chamber and the valve seat (6-16) fixedly provided in the valve cover (6-7) through the sealing component, and its lower end is fixedly connected to the valve core (6-6), the upper part of the valve stem (6-2) is fixedly connected to the spring top cover (6-5), and its upper end is connected to the valve stem actuator, the upper end of the return spring (6-4) is in conflict with the spring top cover (6-5), and the lower end is in conflict with the lower end surface of the valve cover (6-7), the outer wall of the spring top cover is axially slidably connected to the slide provided on the inner wall of the valve cover via a slider, the valve core is located at the upper end of the valve port and corresponds to the valve port, and a throttle valve is provided at the front end of the valve core The outer periphery of the valve core (6-6) is provided with a valve seat (6-16), and the side wall of the valve seat (6-16) is provided with a water outlet. The upper end of the valve seat (6-16) is axially movably connected to the valve stem (6-2), and the lower end is in conflict with the connection port of the valve body (6-1). The valve seat (6-16) extends axially toward the outside of the valve core (6-6) along the valve stem (6-2). The throttle valve is located in the valve seat (6-16). The throttle valve is composed of a matching fixed valve disc (6-12) and a movable valve disc (6-13). The fixed valve disc (6-12) and the movable valve disc (6-13) are respectively arc-shaped. The fixed valve disc (6-12) is fixed on the valve core (6-6), and the movable valve disc passes through the rotary hole provided on the valve core (6-6). The connecting piece is fixedly connected to the valve stem (6-2), and the lower end and the fixed valve disc (6-12) are axially extended in the valve seat (6-16) away from the valve core (6-6). The axis of the movable valve disc (6-13) and the fixed valve disc (6-12) are the same, and one end of the movable valve disc (6-13) can rotate along one end of the fixed valve disc (6-12) toward the inner wall of the fixed valve disc. When the movable valve disc (6-13) and the fixed valve disc (6-12) are arranged relative to each other, the two ends of the movable valve disc (6-13) are respectively connected to the two ends of the fixed valve disc (6-12), so as to facilitate the adjustment of the opening width in the width direction of the water outlet hole by rotating the valve stem (6-2) to drive the movable valve disc (6-13) to rotate relative to the fixed valve disc (6-12).The valve core and the valve port are switched on and off by the axial linear movement of the valve stem (6-2), and the return of the valve stem (6-2) is accelerated by the reset spring (6-4). The water outlet is connected to the return pipe (2), so as to facilitate the adjustment of the flow rate of the indoor pipe (7) and the return pipe (2). The valve stem (6-2) in the pressure balance chamber is axially movable and sleeved with a balance piston (6-9). The outer wall of the balance piston (6-9) is sealed with the pressure balance chamber through a sealing component and is axially movable. The inner wall is sealed with the valve sleeve through a sealing ring and is axially movable. The balancing piston (6-9) is connected to the valve core in a movable manner. The outer periphery of the lower end of the balancing piston (6-9) extends axially toward the valve core to form a valve cover. The balancing piston (6-9) divides the pressure balancing chamber into an upper piston chamber (6-17) and a lower piston chamber (6-18). A balancing spring (6-10) is provided in the lower piston chamber (6-18). The upper end of the balancing spring (6-10) contacts the bottom surface of the balancing piston (6-9), and the lower end contacts the valve seat (6-16). The lower end of the valve stem (6-2) is provided with a water inlet hole (6-11) leading to the upper piston chamber (6-17). , so as to facilitate the introduction of water from the indoor pipeline into the piston upper chamber (6-17) through the water inlet hole (6-11), and achieve hydraulic balance by the up and down movement of the balancing piston to prevent the indoor pipeline from increasing the hydraulic pressure of the indoor pipeline due to the private addition of a pump. The increased water flows into the piston upper chamber through the water inlet hole, and the high-pressure water presses the balancing piston downward. The valve cover at the lower end of the balancing piston gradually moves downward under the thrust of the water in the piston upper chamber to block the water outflow from the openings of the fixed valve plate and the movable valve plate, so that the water outflow in the indoor pipeline gradually decreases, thereby blocking the flow between the user and the user. Hydraulic coupling between households and between users and the heating station ensures a thorough balance between the two networks, while also maintaining a constant pressure differential across the static flow balancing valve. The flow in the indoor pipeline is adjusted by the mutual movement of the movable valve disc (6-13) and the fixed valve disc (6-12). When the flow is set, the static flow balancing valve, the pressure differential controller, and the electric flow control valve work together to output a deterministic flow value that is unaffected by changes in system pressure. Users can independently adjust their home temperature, reducing complaints and eliminating waste.

[0030] The present invention can provide an adjusting sleeve (6-14) and a locking nut (6-15) on the upper part of the valve stem, the adjusting sleeve (6-14) and the valve stem can be axially movably connected, the locking nut (6-15) is threadedly connected to the valve stem, the upper end of the adjusting sleeve (6-14) is connected to the locking nut (6-15), and the lower end is connected to the spring top cover (6-5), and the adjusting sleeve and the valve cover are clearance-matched, so that by rotating the adjusting sleeve (6-14), the valve stem (6-2) can be rotated conveniently and quickly to adjust the water outlet width of the movable valve plate and the fixed valve plate.

[0031] The sealing component of the present invention can be an elastic sealing diaphragm or an O-type sealing ring, so as to extend the sealing performance between the balancing piston and the balancing chamber.

[0032] The elastic sealing diaphragm of the present invention is preferably made of a wear-resistant rubber material, or a wear-resistant cloth-reinforced rubber material, or a corrugated sleeve.

[0033] The anti-leakage safety valve (4) described in the present invention can be an anti-leakage valve, an anti-leakage water valve, or an anti-leakage filter valve, which will not be described in detail here.

[0034] The check valve (5) of the present invention adopts a low-resistance check valve (5) to improve the sensitivity of the check valve and prevent hot water from flowing back.

[0035] Example 1: When the present invention is in use, the present invention can be installed at the household end of the second network. The flow distribution valve (6) can be freely adjusted or closed within the pressure difference range of 80 meters, thereby eliminating the balance regulating valves in various links of the second network and saving a lot of investment. During operation, if the flow rate of the indoor pipeline (7) of the user suddenly increases due to unauthorized water discharge, unauthorized pumping, or accidental leakage, the water flow rate in the anti-leakage safety valve (4) also suddenly increases, pushing the valve core (6-6) in the anti-leakage safety valve to move up quickly along the guide rod and block the water inlet of the rectifier sleeve. The anti-leakage safety valve (4) is immediately closed and the heating is stopped. At the same time, the check valve (5) provided on the return water pipeline (2) also shuts off its return water pipeline (2) when the water flow rate of the indoor pipeline suddenly increases, thereby avoiding water loss in the heating network. The structure of the anti-leakage safety valve (4) of the present invention can be the structure of an anti-leakage water valve, the structure of an anti-leakage filter valve, or the structure of an anti-leakage valve. This is the prior art and will not be described in detail.

[0036] During the period when the anti-leakage safety valve (4) is closed and the supply is stopped, the control unit (3) senses that the anti-leakage safety valve (4) has been closed through a pressure sensor or a temperature sensor provided in the pipeline, and immediately issues an instruction to close the flow distribution valve (6). The valve stem actuator in the flow distribution valve (6) is actuated, driving the valve stem to perform axial linear motion, and the valve stem drives the valve core to seal the valve port, waiting for the user to close the tap that is discharging water, or to repair the damaged indoor pipeline (7);

[0037] If the above problem is not solved, due to the pressure imbalance at both ends of the anti-leakage safety valve (4), the anti-leakage safety valve (4) will remain in a closed state, and the check valve (5) and the flow distribution valve (6) will also remain in a closed state. This not only avoids water loss, but also protects the user's indoor property from loss;

[0038] If the above problem is solved, the control unit (3) will open the flow distribution valve (6) according to the set time. After receiving the instruction, the valve stem of the flow distribution valve (6) drives the valve core and the valve port to separate and return to their original position under the action of the reset spring, thereby opening the valve port. Since the hydraulic pressure in the indoor pipeline is consistent with the hydraulic pressure in the return pipeline, the hydraulic pressure in the upper chamber of the piston and the lower chamber of the piston are the same at this time. The balancing piston moves upward under the action of the balancing spring. At this time, the opening in the height direction of the movable valve plate and the fixed valve plate is the largest, and normal heating is restored. The entire process does not require manual intervention.

[0039] If the flow rate of the indoor pipeline (7) of the user suddenly increases due to the unauthorized addition of a pump, the water flow rate in the anti-leakage safety valve (4) also suddenly increases, pushing the valve core (6-6) in the anti-leakage safety valve to move up quickly along the guide rod and blocking the water inlet of the rectifier sleeve. The anti-leakage safety valve (4) is immediately closed and the heating stops. At the same time, the water in the indoor pipeline is accelerated by the pump and enters the upper cavity of the piston through the water inlet hole. The water pressure pushes the balancing piston downward relative to the balancing cavity, so that the valve cover at the lower end of the balancing piston blocks the opening of the fixed valve plate and the movable valve plate of the indoor pipeline through the valve port, and the opening degree of the fixed valve plate and the movable valve plate gradually decreases, that is, the pressure difference before and after the check valve changes. At this time, the check valve (5) on the return water pipeline (2) is shut off under the action of the flow distribution valve, thereby avoiding water loss in the heating network.

[0040] During the period when the anti-leakage safety valve (4) is closed and the supply is stopped, the control unit (3) senses that the anti-leakage safety valve (4) has been closed through a pressure sensor or a temperature sensor provided in the pipeline, and immediately issues an instruction to close the flow distribution valve (6). The valve stem actuator in the flow distribution valve (6) is actuated, driving the valve stem to perform axial linear motion, and the valve stem drives the valve core to seal the valve port, waiting for the user to stop and remove the running pump;

[0041] If the above problem has not been solved, due to the pressure imbalance at both ends of the anti-leakage safety valve (4), the anti-leakage safety valve (4) is always in a closed state, and the check valve (5) and the flow distribution valve (6) are also always in a closed state, thereby avoiding water loss.

[0042] If the pump on the indoor pipeline is removed, the control unit (3) will open the flow distribution valve (6) according to the set time. After receiving the instruction, the valve stem of the flow distribution valve (6) drives the valve core and the valve port to separate and return to their original position under the action of the return spring, thereby opening the valve port. Since the hydraulic pressure in the indoor pipeline is consistent with the hydraulic pressure in the return water pipeline, the hydraulic pressure in the upper chamber of the piston and the lower chamber of the piston are the same at this time. The valve cover at the lower end of the balancing piston moves upward and returns to its original position under the action of the balancing spring. At this time, the opening in the height direction of the movable valve plate and the fixed valve plate is the largest, and normal heating is restored. The entire process does not require manual intervention.

[0043] The present invention completely solves the problem of balancing the two networks by adopting the above-mentioned method. Verification by a large number of applications has shown that the control method of the present invention can save 26% of heat, 40% of circulating water flow, 34% of electricity consumption, and a large amount of odor additive expenses in the heating system. The water loss rate at the household end is almost zero, and the comprehensive benefit rate can reach more than 30%. It is currently the most thorough and cost-effective non-coupled two-network balancing control method for solving the heating problem.

Claims

1. A non-coupled two-network balance control method, comprising an inlet pipe (1), a return pipe (2), a control unit (3), an anti-leakage safety valve (4), a check valve (5), a flow distribution valve (6) and an indoor pipe (7), wherein the inlet pipe (1) is connected to the inlet of the indoor pipe (7) via the anti-leakage safety valve (4), the outlet of the indoor pipe (7) is connected to the return pipe (2) via the flow distribution valve (6) and the check valve (5), and the flow distribution valve (6) is electrically connected to the control unit (3), characterized in that When the flow rate of the indoor pipeline (7) of the user suddenly increases due to unauthorized water discharge, unauthorized pumping, or accidental leakage, the anti-leakage safety valve (4) immediately closes the water supply circuit and stops heating. At the same time, the check valve (5) installed on the return water pipeline (2) also closes the return water pipeline (2) to ensure that the system does not lose water. During the period when the anti-leakage safety valve (4) is closed and the supply is stopped, the control unit (3) senses that the anti-leakage safety valve (4) has been closed through the pressure sensor and / or temperature sensor installed in the pipeline, and immediately issues an instruction to close the flow distribution valve (6). The flow distribution valve is closed to wait for the user to close the tap that is discharging water or shut down the circulating pump installed privately or repair the damaged indoor pipeline (7). When the user completes the above-mentioned actions, the pressures at both ends of the anti-leakage safety valve (4) gradually tend to be balanced, and the anti-leakage safety valve (4) will automatically open; After the anti-leakage safety valve (4) is opened, the control unit (3) instructs the flow distribution valve (6) to open, and normal heating is restored, thereby completing an automatic anti-leakage water cycle; The flow distribution valve (6) is composed of a static flow balancing valve, a pressure differential controller and an electric flow regulating valve. The electric flow regulating valve includes a valve body (6-1), a valve stem (6-2), a valve stem actuator, a return spring (6-4), a spring top cover (6-5), a valve core (6-6), a valve cover (6-7) and a valve sleeve (6-8). The static flow balancing valve includes a balancing piston (6-9) and a balancing spring (6-10). The pressure differential controller includes a fixed valve plate (6-12), a movable valve plate (6-13) and a valve seat (6-16). One end of the valve body (6-1) is connected to the water outlet of the indoor pipeline (7), and the other end is connected to the return water pipeline (2). The upper end of the valve body (6-1) is connected to the valve stem actuator through the valve cover (6-7). The valve stem (6-2) is fixedly connected to the housing of the actuator, and the valve stem (6-2) can axially move through the valve sleeve (6-8) and the pressure balance chamber and the valve seat (6-16) fixedly provided in the valve cover (6-7) through the sealing component, and its lower end is fixedly connected to the valve core (6-6). After the upper part of the valve stem (6-2) is fixedly connected to the spring top cover (6-5), its upper end is connected to the valve stem actuator. The upper end of the return spring (6-4) is in conflict with the spring top cover (6-5), and the lower end is in conflict with the lower end surface of the valve cover (6-7). The outer wall of the spring top cover is axially slidably connected to the slideway provided on the inner wall of the valve cover via a slider. The valve core is located at the upper end of the valve port and corresponds to the valve port. A throttle valve is provided at the front end of the valve core, and a valve seat (6-16) is sleeved around the outer periphery of the valve core (6-6). The side wall of the valve seat (6-16) is provided with a water outlet, the upper end of the valve seat (6-16) is axially movably connected to the valve stem (6-2), and the lower end is in conflict with the connection port of the valve body (6-1), and the valve seat (6-16) extends axially along the valve stem (6-2) toward the outside of the valve core (6-6), and the throttle valve is located in the valve seat (6-16), and the throttle valve is composed of a matching fixed valve plate (6-12) and a movable valve plate (6-13), and the fixed valve plate (6-12) and the movable valve plate (6-13) are respectively arc-shaped, and the fixed valve plate (6-12) is fixed on the valve core (6-6), and the movable valve plate passes through the rotating hole provided on the valve core (6-6) and is fixedly connected to the valve stem (6-2) via a connecting piece, and the lower end and the fixed valve plate ( 6-12) is axially extended away from the valve core (6-6) in the valve seat (6-16), the movable valve disc (6-13) and the fixed valve disc (6-12) have the same axis, and one end of the movable valve disc (6-13) can rotate along one end of the fixed valve disc (6-12) toward the inner wall of the fixed valve disc. When the movable valve disc (6-13) and the fixed valve disc (6-12) are arranged relative to each other, the two ends of the movable valve disc (6-13) are respectively connected to the two ends of the fixed valve disc (6-12), the water outlet is connected to the return water pipeline (2), and the valve stem (6-2) in the pressure balance chamber is axially movable with a balancing piston (6-9). The outer wall of the balancing piston (6-9) is sealed with the pressure balance chamber through a sealing component and can be axially moved.The inner wall is sealed with the valve sleeve via a sealing ring and is axially movable. The outer periphery of the lower end of the balancing piston (6-9) extends axially toward the valve core to form a valve cover. The balancing piston (6-9) divides the pressure balancing chamber into an upper piston chamber (6-17) and a lower piston chamber (6-18). A balancing spring (6-10) is provided in the lower piston chamber (6-18). The upper end of the balancing spring (6-10) contacts the bottom surface of the balancing piston (6-9), and the lower end contacts the valve seat (6-16). The lower end of the valve stem (6-2) is provided with a water inlet hole (6-11) leading to the upper piston chamber (6-17).

2. The uncoupled two-network balance control method according to claim 1, characterized in that The control unit (3) is mounted on the flow distribution valve (6).

3. The uncoupled two-network balance control method according to claim 1, characterized in that An adjusting sleeve (6-14) and a locking nut (6-15) are provided on the upper part of the valve stem. The adjusting sleeve (6-14) is axially movably connected to the valve stem. The locking nut (6-15) is threadedly connected to the valve stem. The upper end of the adjusting sleeve (6-14) is connected to the locking nut (6-15), and the lower end is connected to the spring top cover (6-5). The adjusting sleeve is clearance-matched with the valve cover.

4. The uncoupled two-network balance control method according to claim 1, characterized in that The sealing component adopts an elastic sealing diaphragm or an O-type sealing ring.

5. The uncoupled two-network balance control method according to claim 4, characterized in that The elastic sealing diaphragm is made of wear-resistant rubber material, wear-resistant cloth-reinforced rubber material, or corrugated sleeve.

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