Efficient and energy-saving boiler feed pump

Abstract

The utility model relates to the technical field of power pumps, in particular to an efficient and energy-saving boiler feed pump which comprises a supporting base, one side of the top of the supporting base is connected with a generator through a mounting seat, the output end of the generator is connected with a coupler, one side of the top of the supporting base is connected with a pump body through a bearing frame, and the pump body is connected with a water pump. The end of the coupler is fixedly connected with a pump shaft, and the end of the pump shaft extends into the pump body and is fixedly connected with an impeller. When the boiler feed pump operates, after water flow is accelerated by the impeller, vortex is formed under the guidance of the turbine blades by arranging the turbine blades, the micro turbine is driven to operate, and the generator is driven to convert originally lost vortex energy into electric energy. The electric energy can be directly supplied to pump body auxiliary equipment, dependence of the pump body on external energy is greatly reduced, energy consumption of the whole boiler feed pump is reduced, and efficient energy conservation and emission reduction of the boiler feed pump are achieved.

Description

Technical Field

[0001] This utility model relates to the field of power pump technology, and in particular to a high-efficiency and energy-saving boiler feed pump. Background Technology

[0002] In thermal power plants, the function of high-pressure boiler feedwater pumps is to pressurize the deaerator water tank, which has a certain temperature and has been deoxygenated, to the rated pressure and then deliver it to the boiler to meet the boiler's water needs. The boiler feedwater pumps must supply water to the boiler continuously to ensure the safe operation of the boiler.

[0003] However, traditional boiler feed pumps suffer from numerous problems during operation. Firstly, due to friction between the impeller and the fluid, and resistance within the pump's flow channels, a significant amount of energy is wasted during long-term operation. Statistics show that in some older industrial facilities, boiler feed pumps account for 30%-40% of the total boiler system energy consumption, increasing production costs and leading to persistently high energy consumption. Secondly, as the equipment ages, internal pump components wear out significantly. Impeller wear affects the pump's head and flow rate, gradually reducing its performance and making it unable to meet the boiler's feedwater requirements. This results in unstable water supply, ultimately impacting the normal operation of the entire production or heating system. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency and energy-saving boiler feed pump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-efficiency and energy-saving boiler feed pump includes a support base. A generator is connected to the top side of the support base via a mounting seat. The output end of the generator is connected to a coupling. A pump body is connected to the top side of the support base via a support frame. A pump shaft is fixedly connected to the end of the coupling. The end of the pump shaft extends into the interior of the pump body and is fixedly connected to an impeller.

[0007] A connecting shaft is fitted onto the outer surface of the pump shaft. A turbine blade is fixedly connected to the end of the connecting shaft. A motor rotor is provided at the end of the pump shaft away from the turbine blade. A micro turbine is connected to one end of the motor rotor.

[0008] Preferably, a flow regulating valve is provided between the impeller and the turbine blades, and a speed sensor is connected to one end of the micro turbine.

[0009] Preferably, an inlet pipe and an outlet pipe are fixedly connected to the outer top of the pump body in sequence. Both the inlet pipe and the outlet pipe are connected to the interior of the pump body. A flow sensor is installed on the inner wall of the inlet pipe.

[0010] Preferably, a battery pack and a power distributor are respectively provided on the top of the support base, and a PLC controller is connected to one side of the inner wall of the power distributor.

[0011] Preferably, the generator is a permanent magnet synchronous generator, and the power distributor is electrically connected to the generator and the battery pack in sequence via cables.

[0012] The beneficial effects of this utility model are:

[0013] When the boiler feed pump is running, the water flow is accelerated by the impeller, and through the turbine blades, vortices are formed under the guidance of the turbine blades. These vortices drive a micro-turbine, which in turn drives a generator to convert the energy of the dissipated vortices into electrical energy. This electrical energy can be directly supplied to the pump's auxiliary equipment, greatly reducing the pump's dependence on external energy sources and lowering the overall energy consumption of the boiler feed pump, thus achieving high efficiency, energy saving, and emission reduction.

[0014] The flow rate of water in the pump chamber of the boiler feed pump is monitored in real time by a flow sensor, and the speed sensor accurately controls the speed of the micro turbine. The data is fed back to the controller. The controller intelligently adjusts the flow regulating valve according to the pump's operating load to reasonably control the flow rate entering the vortex generator, effectively improving energy recovery efficiency, preventing interference with the normal operation of the pump, avoiding unstable water supply caused by changes in equipment operating conditions, ensuring that the boiler feed pump always maintains a stable head and flow rate, guaranteeing the boiler's water supply needs, and effectively maintaining the stable operation of the entire production or heating system. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of a high-efficiency and energy-saving boiler feed pump proposed in this utility model;

[0016] Fig. 2 This is a schematic diagram of the internal structure of a high-efficiency and energy-saving boiler feed pump proposed in this utility model.

[0017] Fig. 3 This is a schematic diagram of the pump shaft structure of a high-efficiency and energy-saving boiler feed pump proposed in this utility model.

[0018] In the picture:

[0019] 1. Support base; 2. Generator; 3. Coupling; 4. Pump body; 5. Pump shaft; 6. Impeller; 7. Connecting shaft; 8. Turbine blades; 9. Motor rotor; 10. Micro turbine; 11. Flow regulating valve; 12. Speed ​​sensor; 13. Inlet pipe; 14. Outlet pipe; 15. Battery pack; 16. Power distributor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0022] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0023] Example:

[0024] Reference Figs. 1-3 A high-efficiency and energy-saving boiler feed pump includes a support base 1, a generator 2 connected to the top side of the support base 1 via a mounting seat, a coupling 3 connected to the output end of the generator 2, a pump body 4 connected to the top side of the support base 1 via a support frame, a pump shaft 5 fixedly connected to the end of the coupling 3, and an impeller 6 fixedly connected to the end of the pump shaft 5 extending into the interior of the pump body 4.

[0025] A connecting shaft 7 is fitted on the outer surface of the pump shaft 5. A turbine blade 8 is fixedly connected to the end of the connecting shaft 7. A motor rotor 9 is provided at the end of the pump shaft 5 away from the turbine blade 8. A micro turbine 10 is connected to one end of the motor rotor 9.

[0026] A flow regulating valve 11 is provided between the impeller 6 and the turbine blades 8, and a speed sensor 12 is connected to one end of the micro turbine 10.

[0027] The top of the pump body 4 is fixedly connected to an inlet pipe 13 and an outlet pipe 14 in sequence. Both the inlet pipe 13 and the outlet pipe 14 are connected to the inside of the pump body 4. A flow sensor is installed on the inner wall of the inlet pipe 13.

[0028] A battery pack 15 and an energy distributor 16 are respectively installed on the top of the support base 1. A PLC controller is connected to one side of the inner wall of the energy distributor 16.

[0029] Generator 2 is a permanent magnet synchronous generator, and power distributor 16 is electrically connected to generator 2 and battery pack 15 in sequence via cables.

[0030] In this embodiment, when the boiler feedwater pump is running, water flows into the pump chamber of the pump body 4 from the inlet pipe 13. At this time, the generator 2 is started, driving the pump shaft 5 to rotate at high speed. The rotation of the pump shaft 5 drives the impeller 6 to rotate. When the water flows through the high-speed rotating impeller 6, the water gains high speed and energy. Subsequently, when the water flows through the turbine blades 8, the direction of the water flow changes under the action of the turbine blades 8, forming a vortex that rotates around the pump shaft 5. The high-speed rotating vortex then drives the micro turbine 10 to rotate. When the generator 2 is running, its internal permanent magnet generates a stable magnetic field. When the micro turbine 10 rotates, it drives the motor rotor 9 to rotate in the magnetic field. At this time, the stator winding in the generator 2 generates an induced electromotive force and converts its mechanical energy into electrical energy, thereby converting some of the originally dissipated vortex energy into electrical energy. Subsequently, the generator 2 directly supplies part of the generated electrical energy to the auxiliary equipment of the pump body 4 (such as the lubrication system motor and the cooling system motor) to meet the needs. Its operation requires energy recovery and utilization, reducing the pump body 4's demand for external energy and lowering energy consumption. When the power generation exceeds the equipment's power demand, the excess power is stored in the battery pack 15 through the power distributor 16. When the generator 2's output power is insufficient or the boiler feed pump stops, the battery pack 15 releases the stored power to continue supplying power to auxiliary equipment, ensuring the normal operation of the boiler feed pump's related systems. Subsequently, the flow rate inside the pump chamber is monitored in real time by a flow sensor, while the speed sensor 12 monitors the speed of the micro turbine 10. The collected data is then transmitted to the controller. When the pump body 4 is operating under high load, the flow rate entering the vortex generator is increased by adjusting the flow regulating valve 11, enhancing the vortex intensity and improving energy recovery efficiency. When the pump body 4 is under low load, the flow rate is reduced to avoid interfering with the normal operation of the pump body 4, further improving energy utilization efficiency and achieving high efficiency and energy saving of the boiler feed pump.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving boiler feed pump, comprising a support base (1), characterized in that, A generator (2) is connected to the top side of the support base (1) via a mounting seat. A coupling (3) is connected to the output end of the generator (2). A pump body (4) is connected to the top side of the support base (1) via a support frame. A pump shaft (5) is fixedly connected to the end of the coupling (3). The end of the pump shaft (5) extends into the interior of the pump body (4) and is fixedly connected to an impeller (6). A connecting shaft (7) is fitted on the outer surface of the pump shaft (5). A turbine blade (8) is fixedly connected to the end of the connecting shaft (7). A motor rotor (9) is provided at the end of the pump shaft (5) away from the turbine blade (8). A micro turbine (10) is connected to one end of the motor rotor (9).

2. The high-efficiency and energy-saving boiler feed pump according to claim 1, characterized in that, A flow regulating valve (11) is provided between the impeller (6) and the turbine blades (8), and a speed sensor (12) is connected to one end of the micro turbine (10).

3. The high-efficiency and energy-saving boiler feed pump according to claim 1, characterized in that, The pump body (4) is fixedly connected to the top of the pump body (4) in sequence with an inlet pipe (13) and an outlet pipe (14). The inlet pipe (13) and the outlet pipe (14) are both connected to the inside of the pump body (4). A flow sensor is provided on the inner wall of the inlet pipe (13).

4. The high-efficiency and energy-saving boiler feed pump according to claim 1, characterized in that, The top of the support base (1) is respectively provided with a battery pack (15) and a power distributor (16), and a PLC controller is connected to one side of the inner wall of the power distributor (16).

5. A high-efficiency and energy-saving boiler feed pump according to claim 4, characterized in that, The generator (2) is a permanent magnet synchronous generator, and the power distributor (16) is electrically connected to the generator (2) and the battery pack (15) in sequence via cables.

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