On-demand heat supply intelligent transmission and distribution system based on distributed water pumps

Abstract

An on-demand heat supply intelligent transmission and distribution system based on distributed water pumps comprises a source pump assembly, a main heat supply pipeline, a main backflow pipeline and a plurality of user heat supply branch lines arranged in parallel, each user heat supply branch line comprises a user heat supply pipeline communicating with the main heat supply pipeline and a user backflow pipeline communicating with the main backflow pipeline, the user heat supply pipelines are provided with distributed water pumps, the system further comprises a control system, the source pump assembly is controlled by a variable frequency motor, and the user heat supply pipelines are provided with first temperature sensors. The user backflow pipeline is provided with a second temperature sensor, the control system is electrically connected with the distributed water pump, the variable frequency motor, the first temperature sensor and the second temperature sensor, the water pump is used for replacing a valve to distribute and adjust cold and heat, the lift of the water pump in the operation process is remarkably reduced, and therefore transmission and distribution energy consumption is remarkably reduced.

Description

Technical Field

[0001] The present application relates to the field of heat transmission and distribution, and specifically to an on-demand heat supply intelligent transmission and distribution system based on distributed water pumps. Background Art

[0002] On-demand fluid distribution is a crucial foundational task in the heating industry. Currently, conventional methods employ high-flow, high-lift, and high-power pumps to deliver flow to various heating systems based on the required head pressure at the system's most unfavorable point. To prevent hydraulic imbalance, high-resistance components such as balancing valves are often used to dissipate the head pressure by increasing system resistance at the front end of oversupply, thus achieving hydraulic balance in the network. This results in ineffective power consumption from the pumps, resulting in energy waste and a lack of intelligent, automated regulation. Utility Model Content

[0003] The main purpose of this application is to provide an on-demand heat supply intelligent distribution system based on distributed water pumps, which uses water pumps instead of valves to distribute and regulate heat and cold water, which will significantly reduce the head of the water pump during operation, thereby significantly reducing the energy consumption of distribution.

[0004] In order to achieve the above-mentioned objectives, in the first aspect, the present application provides an on-demand intelligent heating distribution system based on distributed water pumps, comprising a source pump component, a main heating pipe and a main return pipe connected to the source pump component, and several user heating branches arranged in parallel, wherein the user heating branches each include a user heating pipe connected to the main heating pipe and a user return pipe connected to the main return pipe, and the user heating pipes are each provided with a distributed water pump, and also includes a control system, wherein the source pump component is controlled by a variable frequency motor, the user heating pipe has a first temperature sensor, and the user return pipe is provided with a second temperature sensor, and the control system is electrically connected to the distributed water pump, the variable frequency motor, the first temperature sensor and the second temperature sensor.

[0005] A further improvement is that the control system includes a control cabinet, and the operation interface of the control cabinet adopts a 10-inch true color touch screen.

[0006] A further improvement is that the control cabinet is provided with a display device for displaying the parameters of each distributed water pump.

[0007] A further improvement is that the source pump assembly includes a source pump body, a check valve, a shut-off valve, a drain valve, and a meter.

[0008] A further improvement is that each of the distributed water pumps is provided with a wireless communication module.

[0009] A further improvement is that the wireless communication module adopts Bluetooth communication.

[0010] The utility model provides an on-demand intelligent heat supply and distribution system based on distributed water pumps. Compared with the existing technology, its beneficial effects are that the temperature difference comparison mode is adopted to realize real-time variable flow adjustment of the source pump following the user pump adjustment, and at the same time it has the efficiency optimization function, which can automatically adjust the number of running water pumps according to the change of circulating water volume. The use of a distributed pump system can achieve on-demand hot water hydraulic balance of the secondary pipe network system, increase the circulating flow in the building to improve the heating effect of the residents, reduce the water supply temperature of the heat source, and save operating energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0012] Figure 1 It is a schematic diagram of the present utility model.

[0013] Among them: 1. Source pump assembly; 2. Distributed water pump; 3. Control system. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0015] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0016] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0017] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0018] Additionally, the term "plurality" shall mean two or more.

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] like Figure 1 As shown, an on-demand heat supply intelligent distribution system based on a distributed water pump 2 includes a source pump component 1, a main heating pipe and a main return pipe connected to the source pump component 1, and several user heating branches arranged in parallel. The user heating branches all include a user heating pipe connected to the main heating pipe and a user return pipe connected to the main return pipe. The user heating pipes are all provided with distributed water pumps 2. It also includes a control system 3. The source pump component 1 is controlled by a variable frequency motor, the user heating pipe has a first temperature sensor, and the user return pipe is provided with a second temperature sensor. The control system 3 is electrically connected to the distributed water pump 2, the variable frequency motor, the first temperature sensor and the second temperature sensor.

[0021] The source pump assembly 1 is responsible for providing the entire circulation flow and overcoming the resistance of non-circulation within the heat source. Using mechatronics, the heating system's circulating pump and related components, instrumentation, and pump control cabinet are prefabricated and integrated at the manufacturer. This modular configuration ensures optimal hydraulic operation of the heating distribution system. The system pressure meets PN16 and the medium temperature ranges from 0 to 80°C. The control cabinet and pump assembly mechanical components can be integrated or split. The pump assembly includes the corresponding circulating water pump, check valve, flexible connector, shut-off valve, drain valve, and necessary metering instruments and sensors. To ensure hydraulic efficiency, all tees within the pump assembly are C-shaped and clearly indicate the flow direction of the medium. The internal piping must be optimized using CFD hydraulic simulations.

[0022] Distributed water pumps (2) are installed at each heat inlet. The circulating water volume is calculated based on the area served by the heat inlet, and the pump head calculation takes into account the resistance from the boiler room outlet to the heat user's home. The distributed pumps feature automatic return water temperature control, enabling variable flow rate operation based on user load. Their Energy Efficiency Index (EEI) is no greater than 0.20, and their rated parameters include a minimum medium temperature of -10°C, a maximum medium temperature of 110°C, and a maximum sound pressure level of 43dB(A). Furthermore, each distributed water pump (2) is equipped with a wireless communication module, enabling on-site debugging via a mobile phone app, such as Bluetooth.

[0023] Control system 3 includes a control cabinet and sensors. The temperature difference comparison mode is used to achieve real-time variable flow regulation of the source pump following the user pump adjustment. It also has an efficiency optimization function, which can automatically adjust the number of running pumps according to changes in the circulating water volume. The operating interface of control system 3 should be a 10-inch true color touch screen with an open communication protocol that supports Modbus TCP / IP, ModbusRTU, ProfiNet, or BACNe. The flow rate of the pump group can be estimated without a flow meter. By setting up a display device, the frequency, flow rate, head, electric power, efficiency, etc. of each water pump can be displayed in real time. The display device can be a separate display screen. In addition, the display function can also be integrated into the touch screen and displayed using the touch screen of the operating interface.

[0024] The system thus has the following functions:

[0025] (1) The control system 3 has the function of adjusting the distribution flow in real time according to the actual heat load of the user, ensuring that the heat source pump follows the variable flow regulation of the user pump distributed water pump 2 and frequency regulation, realizing on-demand heating and energy-saving operation;

[0026] (2) The user pump distributed water pump 2 has a maximum flow limit function to avoid mutual "water grabbing" and affecting the heating effect;

[0027] (3) The heat source pump and the user pump distributed water pump 2 have a minimum flow limit function to ensure the minimum safe flow of the heat pump and the heat source and avoid the hydraulic vertical imbalance of the system in the building;

[0028] (4) The control system 3 of the distributed system has the ability to control the most energy-efficient operation in real time, and to control the optimal flow of each pump in real time, thereby avoiding unnecessary bypass flow and ensuring the best energy efficiency of the distribution system at all times.

[0029] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An on-demand heat supply intelligent distribution system based on distributed water pumps, characterized in that: It includes a source pump component, a main heating pipe and a main return pipe connected to the source pump component, and several user heating branches arranged in parallel. The user heating branches all include a user heating pipe connected to the main heating pipe and a user return pipe connected to the main return pipe. Distributed water pumps are provided on the user heating pipes. It also includes a control system. The source pump component is controlled by a variable frequency motor. The user heating pipe has a first temperature sensor, and the user return pipe is provided with a second temperature sensor. The control system is electrically connected to the distributed water pump, the variable frequency motor, the first temperature sensor and the second temperature sensor.

2. The on-demand heat supply intelligent distribution system based on distributed water pumps according to claim 1, characterized in that: The control system includes a control cabinet, and the operation interface of the control cabinet adopts a 10-inch true color touch screen.

3. The distributed water pump-based on-demand heat supply intelligent distribution system according to claim 2, characterized in that: The control cabinet is provided with a display device for displaying the parameters of each distributed water pump.

4. The on-demand heat supply intelligent distribution system based on distributed water pumps according to claim 1, characterized in that: The source pump assembly includes a source pump body, a check valve, a shut-off valve, a drain valve, and a meter.

5. The distributed water pump-based on-demand heat supply intelligent distribution system according to claim 1, characterized in that: Each of the distributed water pumps is provided with a wireless communication module.

6. The distributed water pump-based on-demand heat supply intelligent distribution system according to claim 5, characterized in that: The wireless communication module adopts Bluetooth communication.

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