Output system capable of continuously adjusting boiler heat source and using method thereof

Abstract

The invention relates to boiler heat supply, in particular to an output system capable of continuously adjusting a boiler heat source and a using method of the output system. Comprising a boiler and a first water pump, the boiler communicates with a water supply pipeline and a water return pipeline, the water return pipeline is provided with the first water pump, and the water supply pipeline on the water outlet side of the first water pump is provided with an electric three-way valve and communicates with the water return pipeline through a first pipeline; a second pipeline and a second water pump are arranged between the water supply pipeline and the water return pipeline on one side of the boiler of the electric three-way valve; an electric stop valve is arranged on the water return pipeline between the first pipeline and the second pipeline; the water supply pipeline and the water outlet pipeline are provided with a pressure gauge system and a temperature detection system. The heat energy output of the system can be reduced while the low-efficiency operation of the system is ensured, and the loss during system circulation is reduced, so that the aim of saving energy is fulfilled.

Description

Technical Field

[0001] The invention relates to boiler heating, and in particular to an output system capable of continuously adjusting a boiler heat source and a use method thereof. Background Art

[0002] For some public infrastructure such as hotels and stadiums, the heat supply system mostly uses boilers as heat sources. There has long been a problem with boiler heating: there is excess heat energy in normal times, but insufficient heat supply capacity when people are concentrated. The main reason is that when the closed loop of the heat water supply system pipeline is large and the pipeline route is long, most users are closed for a long time, and the heat energy flow in the pipeline is wasted, resulting in long-term operation of the boiler and energy waste. When more users are turned on, the heat energy retained in the pipeline is consumed at the same time, and the energy required to be provided by the boiler increases sharply. In addition, when the boiler continues to operate, the user's heat energy consumption continues to decrease until it is maintained in a certain loss range. At this time, the heat energy output of the boiler operation is too high, resulting in energy waste. Therefore, it causes overcapacity during normal operation, and energy waste caused by boiler operation. When all users are put into use, the energy loss of the boiler increases sharply, and the boiler operates efficiently. When user needs are met, heat energy consumption is reduced, the boiler has excess capacity, energy loss is reduced, and the boiler has excess capacity. Summary of the invention

[0003] The present invention aims to solve the above technical problems, thereby providing an output system capable of continuously adjusting the boiler heat source, which can save energy and reduce system circulation losses, and a method for using the system.

[0004] The present invention solves the technical problem and adopts the following technical solution: A system capable of continuously adjusting the output of a boiler heat source comprises a boiler and a first water pump, wherein the boiler is connected to a water supply pipe and a return pipe respectively, and the return pipe is provided with the first water pump. The water supply pipe on the outlet side of the first water pump is provided with an electric three-way valve and is connected to the return pipe through the first pipe. A second pipe is provided between the water supply pipe and the return pipe on the boiler side of the electric three-way valve and a second water pump is installed. The return pipe between the first pipe and the second pipe is provided with an electric stop valve. The water supply pipeline and the water outlet pipeline are installed with a pressure gauge system and a temperature detection system.

[0005] A method for using a system capable of continuously adjusting an output of a boiler heat source, When the boiler system starts to supply heat, the centralized control platform issues a command, the electric stop valve opens, the second water pump closes, the electric three-way valve connects the water supply pipeline, the first water pump starts, and the boiler starts to supply heat. The system circulates heat according to the first water pump-electric stop valve-boiler-electric three-way valve-second temperature detector. When the second temperature detector detects that the system temperature reaches the design temperature, the second water pump starts to connect the water supply pipe and the return pipe, and part of the heat energy is directly returned to the return pipe through the second water pump; When the temperature of the second temperature detector reaches the design temperature and is close to the temperature of the third temperature detector, the temperature control console issues a command, the electric three-way valve is activated, the supply and return water pipes are connected, the electric stop valve is closed, and the second water pump is started. The system is divided into two operation routes: one route is the second water pump-fourth temperature detector-boiler-first temperature detector-energy-saving water pump, and the other route is the first water pump-electric three-way valve-second temperature detector-system user-third temperature detector-first water pump.

[0006] Compared with the prior art, the present invention using the above technical solution has the following beneficial effects: 1) By setting up the second water pump of the system for intermittent operation, the system heat output can be reduced while ensuring the system operates inefficiently, and the loss during system circulation can be reduced, thereby achieving the purpose of energy saving; 2) By installing temperature detectors in the system's water inlet and return pipes, the temperature control point of the circulation loop can respond quickly, meeting the needs of rapid response under conditions of low-efficiency operation, high-efficiency operation, and energy-saving operation, and effectively maintaining stable heat output at the user end; 3) By setting up a centralized control platform, the system can be automatically operated and the operating costs can be reduced; 4) By setting up a temperature detector, an energy storage device and a second water pump, the system can be operated intermittently, energy loss can be reduced, equipment usage can be reduced, and the service life of the system can be increased.

[0007] Further, the optimization scheme of the present invention is: The pressure gauge system includes a first pressure gauge, a second pressure gauge and a third pressure gauge. The first pressure gauge is placed at one end of the water supply pipe close to the boiler, the second pressure gauge is placed at the water inlet side of the first water pump of the return pipe, and the third pressure gauge is placed at one end of the return pipe close to the boiler.

[0008] The first water pump, the second water pump, the electric three-way valve, the electric stop valve and the temperature detection system are all electrically connected to the control platform.

[0009] The temperature detection system includes a first temperature detector, a second temperature detector, a third temperature detector and a fourth temperature detector. The first temperature detector is placed on the water supply pipe behind the first pressure gauge, the second temperature detector is placed on the water supply pipe behind the electric three-way valve, the third temperature detector is placed on the return pipe between the first water pump and the second pressure gauge, and the fourth temperature detector is installed on the return pipe between the third pressure gauge and the boiler.

[0010] A safety valve is installed in the water supply pipe on the water inlet side of the second water pump.

[0011] An energy storage device is provided between the first pipe and the second pipe of the return water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a system structure diagram of an embodiment of the present invention; In the figure: boiler 1; first pressure gauge 2; first temperature detector 3; safety valve 4; electric three-way valve 5; second temperature detector 6; second pressure gauge 7; third temperature detector 8; first water pump 9; energy storage device 10; electric stop valve 11; third pressure gauge 12; fourth temperature detector 13; second water pump 14; centralized control platform 15; water supply pipe 16; return pipe 17; first pipe 18; second pipe 19. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below 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, rather than all the embodiments.

[0014] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] See also Figure 1 This embodiment provides an output system capable of continuously adjusting the boiler heat source, which is mainly composed of a boiler 1, a first water pump 9, a second water pump 14, a water supply pipe 16, a water return pipe 17, a first pipe 18 and a second pipe 19. The boiler 1 can be any type of heating boiler. The drum of the boiler 1 is provided with a water outlet and a water return port. The water outlet and the water return port of the boiler 1 are respectively installed with a water supply pipe 16 and a water return pipe 17. The water supply pipe 16 supplies heat to the user, and the water return pipe 17 is used for the user's water return. The water return pipe 17 is installed with a first water pump 9. The first water pump 9 is a circulation water pump, which is used for the formal circulation of the pipeline thermal energy system.

[0016] The water supply pipe 16 at the outlet side of the first water pump 9 is provided with an electric three-way valve 5, the first port and the second port of the electric three-way valve 5 are respectively connected to the water supply pipe 16, and the third port of the electric three-way valve 5 is connected to the return pipe 17 through the first pipe 18. The electric three-way valve 5 is used to connect and short-circuit the water supply pipe 16 and the return pipe 17 of the system.

[0017] A second pipe 19 is installed between the water supply pipe 16 and the return pipe 17 on the boiler 1 side of the electric three-way valve 5. The second pipe 19 is installed with a second water pump 14, which is used as an energy-saving water pump. The return pipe 17 between the first pipe 18 and the second pipe 19 is sequentially installed with an energy storage device 10 and an electric stop valve 11 along the return direction. The energy storage device 10 is used for energy storage of the system, and can automatically release energy to the system for a certain period of time when the system stops running. The electric stop valve 11 is used to cut off the energy supply of the system return pipe 17. The first water pump 9, the second water pump 14, the electric stop valve 11 and the electric three-way valve 5 are all controlled by the centralized control platform 15.

[0018] The water supply pipe 16 and the return pipe 17 are installed with a pressure gauge system, which consists of a first pressure gauge 2, a second pressure gauge 7 and a third pressure gauge 12. The first pressure gauge 2 is installed at one end of the water supply pipe 16 close to the boiler 1, the second pressure gauge 7 is installed at the water inlet side of the first water pump 9 of the return pipe 17, and the third pressure gauge 12 is installed at one end of the return pipe 17 close to the boiler 1. The first pressure gauge 2, the second pressure gauge 7 and the third pressure gauge 12 measure the system pressure at the corresponding positions of the water supply pipe 16 and the water outlet pipe 16 respectively.

[0019] The water supply pipe 16 and the return pipe 17 are installed with a temperature detection system, which is composed of a first temperature detector 3, a second temperature detector 6, a third temperature detector 8 and a fourth temperature detector 13. The first temperature detector 3 is installed on the water supply pipe 16 behind the first pressure gauge 2 and is close to the first pressure gauge 2. The second temperature detector 6 is installed on the water supply pipe 16 behind the electric three-way valve 5. The third temperature detector 8 is installed on the return pipe 17 between the first water pump 9 and the second pressure gauge 7. The fourth temperature detector 13 is installed on the return pipe 17 between the third pressure gauge 12 and the boiler 1. The first temperature detector 3, the second temperature detector 6, the third temperature detector 8 and the fourth temperature detector 13 are electrically connected to the centralized control platform 15 respectively. The four temperature detectors detect the temperature of the corresponding positions of the water supply pipe 16 and the return pipe 17 respectively and feed back to the centralized control platform 15.

[0020] The water supply pipe 16 on the water inlet side of the second water pump 14 is installed with a safety valve 4, which is located at the rear side of the first temperature detector 3. When the system pressure exceeds the standard, the valve opens to release the pressure to ensure the safety of the system.

[0021] The method of using the above-mentioned output system capable of continuously adjusting the boiler heat source, When the boiler 1 system starts to supply heat, the centralized control platform 15 issues a command, the electric stop valve 11 opens, the second water pump 14 closes, the electric three-way valve 5 connects to the water supply pipe 16, the first water pump 9 starts, and the boiler 1 system starts to supply heat, according to loop A: first water pump 9-electric stop valve 11-boiler-electric three-way valve 5-second temperature detector 6 for system circulation heating.

[0022] When the system temperature reaches the design temperature, that is, the second temperature detector 6 detects that the system temperature reaches the design temperature, the second water pump 14 starts, connecting the water supply pipe 16 and the return pipe 17. Part of the heat energy of the water supply pipe 16 is directly returned to the return pipe 17 through the second water pump 14, thereby achieving the purpose of energy saving.

[0023] When the system continues to run, the temperature reaches the design temperature and the inlet water temperature of the boiler 1 is close to or equal to the design temperature, that is, the temperature of the second temperature detector 6 reaches the design temperature, and the temperature of the third temperature detector 8 is close to or equal to the temperature of the second temperature detector 6, the third temperature detector 8 feedbacks a signal to the centralized control console 15, and the centralized control console 15 issues an instruction, and the electric three-way valve 5 is actuated, which connects the water supply pipe 16 and the return pipe 17 of the boiler 1, and at the same time closes the electric stop valve 11 and starts the water pump 14. The boiler heating system is divided into B route and C route for operation, and the B route is the second water pump 14-the fourth temperature detector 13-the boiler 1-the first temperature detector 3-the second water pump 14. When the temperature of the first temperature detector 3 is the same as that of the fourth temperature detector 13 and reaches the design temperature, the information is fed back to the centralized control platform 15, and the centralized control platform 15 sends a signal to stop the operation of the boiler 1 and the energy-saving water pump 14, and the system is in a closed state. The C route is the first water pump 9-electric three-way valve 5-the second temperature detector 6-the system user-the third temperature detector 8-the first water pump 9. When the system pressure decreases, that is, the pressure of the second pressure gauge 7 decreases, the system pressure drop is released through the energy storage device 10 .

[0024] After the system has been running for a period of time, the temperature of the second temperature detector 6 drops to the set value, and the information is fed back to the centralized control console 15. The centralized control console 15 sends information to the electric three-way valve 5, which is connected to the water supply pipe 16 of the boiler 1, and at the same time opens the electric stop valve 11 and stops the second water pump 14, and operates according to system A.

[0025] The heat energy of the present invention is timely prepared and quickly replenished, ensuring the heat temperature requirements of end users in winter and when multiple users use the heat energy at the same time, and realizing the ultra-high temperature protection function of the heat source in the pipeline, with good safety and redundancy.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A system capable of continuously adjusting the output of a boiler heat source, comprising a boiler and a first water pump, wherein the boiler is connected to a water supply pipe and a return pipe respectively, and the return pipe is provided with a first water pump, characterized in that: The water supply pipe on the outlet side of the first water pump is provided with an electric three-way valve and is connected to the return pipe through the first pipe. A second pipe is provided between the water supply pipe and the return pipe on the boiler side of the electric three-way valve and a second water pump is installed. The return pipe between the first pipe and the second pipe is provided with an electric stop valve. The water supply pipeline and the water outlet pipeline are installed with a pressure gauge system and a temperature detection system.

2. The output system capable of continuously adjusting the boiler heat source according to claim 1, characterized in that: The pressure gauge system includes a first pressure gauge, a second pressure gauge and a third pressure gauge. The first pressure gauge is placed at one end of the water supply pipe close to the boiler, the second pressure gauge is placed at the water inlet side of the first water pump of the return pipe, and the third pressure gauge is placed at one end of the return pipe close to the boiler.

3. The output system capable of continuously adjusting the boiler heat source according to claim 1, characterized in that: The first water pump, the second water pump, the electric three-way valve, the electric stop valve and the temperature detection system are all electrically connected to the control platform.

4. The output system capable of continuously adjusting the boiler heat source according to claim 1, characterized in that: The temperature detection system includes a first temperature detector, a second temperature detector, a third temperature detector and a fourth temperature detector. The first temperature detector is placed on the water supply pipe behind the first pressure gauge, the second temperature detector is placed on the water supply pipe behind the electric three-way valve, the third temperature detector is placed on the return pipe between the first water pump and the second pressure gauge, and the fourth temperature detector is installed on the return pipe between the third pressure gauge and the boiler.

5. The output system capable of continuously adjusting the boiler heat source according to claim 1, characterized in that: A safety valve is installed in the water supply pipe on the water inlet side of the second water pump.

6. The output system capable of continuously adjusting the boiler heat source according to claim 1, characterized in that: An energy storage device is provided between the first pipe and the second pipe of the return water pipe.

7. A method for using the output system capable of continuously adjusting the boiler heat source according to any one of claims 1 to 6, characterized in that: When the boiler system starts to supply heat, the centralized control platform issues a command, the electric stop valve opens, the second water pump closes, the electric three-way valve connects the water supply pipeline, the first water pump starts, and the boiler starts to supply heat. The system circulates heat according to the first water pump-electric stop valve-boiler-electric three-way valve-second temperature detector. When the second temperature detector detects that the system temperature reaches the design temperature, the second water pump starts to connect the water supply pipe and the return pipe, and part of the heat energy is directly returned to the return pipe through the second water pump; When the temperature of the second temperature detector reaches the design temperature and is close to the temperature of the third temperature detector, the temperature control console issues a command, the electric three-way valve is activated, the supply and return water pipes are connected, the electric stop valve is closed, and the second water pump is started. The system is divided into two operation routes: one route is the second water pump-fourth temperature detector-boiler-first temperature detector-energy-saving water pump, and the other route is the first water pump-electric three-way valve-second temperature detector-system user-third temperature detector-first water pump.

Images