Quick lifting load control device for hot water boiler
By installing load adjustment components and mixers in the outlet pipe of hot water boilers, rapid load adjustment is achieved by mixing cooling water and warm water, which solves the problems of slow response speed and safety hazards of traditional hot water boilers, and improves the regulation capability and equipment life of new energy power grids.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional hot water boiler load regulation methods have slow response speeds, making it difficult to meet the minute-level or even second-level rapid response requirements of new energy power grids. Furthermore, existing rapid regulation methods pose equipment safety hazards and corrosion problems.
A load adjustment component is installed in the outlet pipe of the hot water boiler body. Cooling water and warm water are injected and mixed using a mixer component and an injection pipe. Rapid load adjustment is achieved by controlling the water volume change through an extraction pipe. The mixing uniformity is improved by combining a rotating ring and a mixing plate.
It enables rapid load control of hot water boilers, avoids potential equipment safety hazards, enhances the grid's capacity to absorb new energy sources, and reduces the risk of equipment corrosion.
Smart Images
Figure CN121677176A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of rapid load increase and decrease control devices for hot water boilers, specifically a rapid load increase and decrease control device for hot water boilers. Background Technology
[0002] As the core equipment of a centralized heating system, the load regulation performance of hot water boilers directly affects the stable operation of the power grid and the capacity for renewable energy absorption. Traditional hot water boilers mainly use a method of adjusting the load by staged operation of the burner in conjunction with the coal feed rate. By changing the amount of fuel input, the output of heat power is adjusted. This method is widely used in thermal power plants and is relatively mature and reliable, capable of meeting basic heating load change requirements.
[0003] However, with the rapid expansion of new energy power generation, the power grid has placed higher demands on the response speed of peak-shaving power sources. The load regulation method of traditional hot water boilers has gradually exposed its inherent technical limitations. First, the response of the combustion system has significant inertial hysteresis characteristics. From the issuance of the burner start-up command to the stable change of boiler thermal power output, it needs to go through multiple stages such as fuel delivery, combustion reaction, and heat transfer. The response time of the whole process is usually as long as 3-8 minutes. This slow response characteristic makes it difficult for hot water boilers to meet the technical requirements of the new energy power grid AGC (Automatic Generation Control) system for the rapid response of peak-shaving power sources at the minute or even second level, which seriously restricts the power grid's ability to absorb intermittent new energy sources such as wind power and photovoltaic power.
[0004] In the existing technology, the direct desuperheating water injection regulation method used to speed up the response can achieve relatively fast load regulation, but it will bring serious equipment safety hazards. The rapid injection of desuperheating water will generate a severe temperature gradient on the boiler heating surface, causing thermal stress concentration, which can easily lead to fatigue cracking of the heating surface tubes in the long run. At the same time, the injection of desuperheating water will significantly increase the dissolved oxygen content in the boiler feedwater, which will accelerate the oxygen corrosion process of the boiler body and pipelines under high temperature and high pressure. Summary of the Invention
[0005] The purpose of this invention is to provide a rapid load control device for hot water boilers to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a hot water boiler body, a water outlet pipe is provided on one side of the middle part of the hot water boiler body, a lifting and lowering load control component is provided on the water outlet pipe, the passage of the water outlet pipe passes through the lifting and lowering load control component, a mixer component is provided in the middle of the lifting and lowering load control component, the middle part of the mixer component is hollow, and multiple inclined mixer components are provided at the front and rear ends of the outer side of the mixer component.
[0007] Preferably, a chimney is provided at the top center of the hot water boiler body, and the flue gas generated by combustion is discharged from the chimney. There is a combustion chamber on one side of the bottom of the hot water boiler body, in which coal is burned to heat the heating chamber in the hot water boiler body.
[0008] Preferably, a water inlet pipe is provided on one side of the top of the hot water boiler body, through which water enters the heating chamber of the hot water boiler body, and a water outlet pipe is provided on one side of the middle of the hot water boiler body, through which the hot water in the heating chamber is discharged.
[0009] Preferably, an injection pipe is inserted into one side of the load control component, the inner side of the injection pipe is connected to the middle of the mixer component in the load control component, the injection pipe communicates with the interior of the mixer component, and the outer end of the injection pipe is connected to the output end of the high-pressure water pump. An extraction pipe is inserted into the bottom of the front end of the mixer component, the extraction pipe is located at the rear end of the outlet of the water pipeline, and the other end of the extraction pipe is connected to the pumping end of the high-pressure water pump.
[0010] Preferably, the mixer assembly is provided with a fixing rod around its outer perimeter, and the other end of the fixing rod is connected to the inner wall of the lifting load control assembly. The mixer assembly is fixed to the middle of the lifting load control assembly by the fixing rod and there is a gap between the mixer assembly and the inner wall of the lifting load control assembly.
[0011] Preferably, the front and rear ends of the fixed rod are fixedly connected to connecting rings, and a limiting ring groove is opened on the inner side of the connecting ring. A rotating ring is held in the limiting ring groove. The rotating ring surrounds the mixer assembly and is parallel to the first water spray nozzles set at the front and rear ends of the mixer assembly.
[0012] Preferably, the rotating ring is able to rotate in the limiting ring groove, and multiple sets of rollers are rotatably connected around the outer perimeter of the rotating ring. The rollers are in close contact with the inner wall of the limiting ring groove, and the rollers can reduce the frictional force of the rotating ring rotating in the limiting ring groove.
[0013] Preferably, multiple sets of mixing plates are inclinedly arranged around the inner perimeter of the roller, and the mixing plates are parallel to the first water spray nozzles arranged at the front and rear ends of the mixer assembly, and the inclination angle of the mixing plates is opposite to the inclination angle of the first water spray nozzles.
[0014] Preferably, the water inlet at the middle of the rear end of the mixing plate is parallel to the outlet of the first spray nozzle, and the mixing plate has connecting grooves on both sides of the water inlet, which are connected to the second spray nozzles provided on both sides of the outer end of the mixing plate.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] This invention proposes a rapid load control device for hot water boilers. When the hot water boiler experiences an abnormal load, a water pump is activated to inject cooling water into a mixer assembly located in the middle of the load control component through an injection pipe. The mixer assembly sprays hot water into the injection pipe through inclined first nozzles on both sides, mixing the cooling water with the warm water in the outlet pipe connected to the load control component, thus reducing the load on the warm water in the outlet pipe. An equal amount of water is then extracted through an extraction pipe at the bottom front of the load control component by a water pump, preventing the pressure of the mixed water in the outlet pipe from increasing. The load control is achieved by controlling the changes in the injected and extracted water volume through the water pump.
[0017] Furthermore, when the first spray nozzle sprays water, the impact force of the sprayed water begins to impact the mixing plate inside the rotating ring, thereby driving the rotating ring to rotate in the limiting ring groove inside the connecting ring. The mixing plate starts to stir and mix the sprayed cooling water and warm water through rotation, preventing the cooling water from mixing fully with the discharged warm water. Furthermore, the rollers set around the outer perimeter of the rotating ring can reduce the friction of the rotating ring in the limiting ring groove, allowing the rotating ring to rotate quickly in the limiting ring groove and providing the rotation speed of the rotating ring. Furthermore, part of the cooling water sprayed from the first spray nozzle can be sprayed out through the water inlet opened in the middle of the mixing plate and through the connecting grooves on both sides of the water inlet from the second spray nozzles on both sides of the end of the mixing plate, spraying to the center of the mixing spiral of the mixing plate. The water guide groove thrown out of the mixing plate is forced back to the center, pure centrifugal tendency, enhancing the overall turbulence and mixing effect, and improving the mixing uniformity. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the water outlet pipeline of the present invention;
[0020] Figure 3 This is a three-dimensional structural diagram of the mixer assembly of the present invention;
[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting ring of the present invention;
[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotating ring of the present invention;
[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the hybrid plate of the present invention.
[0024] In the diagram: 1. Hot water boiler body; 2. Chimney; 3. Combustion chamber; 4. Inlet pipe; 5. Outlet pipe; 6. Load control assembly; 7. Injection pipe; 8. Extraction pipe; 9. Mixer assembly; 10. Fixing rod; 11. First spray nozzle; 12. Connecting ring; 13. Limiting ring groove; 14. Rotating ring; 15. Roller; 16. Mixing plate; 17. Inlet; 18. Connecting groove; 19. Second spray nozzle. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] Please see Figures 1 to 6 The present invention provides a technical solution: a hot water boiler body 1, with an outlet pipe 5 provided on one side of the middle of the hot water boiler body 1, a load adjustment and control component 6 provided on the outlet pipe 5, the outlet pipe 5 passing through the load adjustment and control component 6, a mixer component 9 provided in the middle of the load adjustment and control component 6, the middle of the mixer component 9 being hollow, and multiple components 30 on the front and rear ends of the outer side of the mixer component 9. 0 The inclined mixer assembly 9 has a chimney 2 at the top center of the hot water boiler body 1. The flue gas generated by combustion is discharged from the chimney 2. There is a combustion chamber 3 on one side of the bottom of the hot water boiler body 1. Coal is burned in the combustion chamber 3 to heat the heating chamber in the hot water boiler body 1. There is an inlet pipe 4 on one side of the top of the hot water boiler body 1. Water enters the heating chamber of the hot water boiler body 1 from the inlet pipe 4. There is an outlet pipe 5 on one side of the middle of the hot water boiler body 1. The hot water in the heating chamber is discharged through the outlet pipe 5. The cooling water is mixed with the warm water in the outlet pipe 5, which is connected to the load control assembly 6, to reduce the load of the warm water in the outlet pipe 5. An equal amount of water is extracted by the water injection pump through the extraction pipe 8 at the bottom of the front end of the load control assembly 6.
[0027] An injection pipe 7 is inserted into one side of the load control assembly 6. The inner side of the injection pipe 7 is connected to the middle of the mixer assembly 9 in the load control assembly 6. The injection pipe 7 communicates with the interior of the mixer assembly 9. The outer end of the injection pipe 7 is connected to the output end of the high-pressure water injection pump. An extraction pipe 8 is inserted into the bottom of the front end of the mixer assembly 9 in the load control assembly 6. The extraction pipe 8 is located at the rear end of the outlet of the water outlet pipe 5. The other end of the extraction pipe 8 is connected to the pumping end of the high-pressure water injection pump. Fixing rods 10 are set around the outer perimeter of the mixer assembly 9. The other end of the fixing rods 10 is connected to the inner wall of the load control assembly 6. The mixer assembly 9 is fixed in the middle of the load control assembly 6 by the fixing rods 10 and there is a gap between it and the inner wall of the load control assembly 6. When the hot water boiler body 1 experiences an abnormal load, the pump is started to inject cooling water into the mixer assembly 9 located in the middle of the load control assembly 6 through the injection pipe 7. The mixer assembly 9 sprays hot water into the injection pipe 7 through the inclined first spray nozzles 11 on both sides.
[0028] The connecting rings 12 are fixedly connected to the front and rear ends of the fixed rod 10. A limiting ring groove 13 is opened on the inner side of the connecting ring 12. The rotating ring 14 is held in the limiting ring groove 13. The rotating ring 14 surrounds the mixer assembly 9 and is parallel to the first water spray nozzles 11 set at the front and rear ends of the mixer assembly 9. The rotating ring 14 can rotate in the limiting ring groove 13. Multiple sets of rollers 15 are rotatably connected around the outer periphery of the rotating ring 14. The rollers 15 are in close contact with the inner wall of the limiting ring groove 13. The rollers 15 can reduce the friction of the rotating ring 14 rotating in the limiting ring groove 13. The rollers 15 set around the outer periphery of the rotating ring 14 can reduce the friction of the rotating ring 14 in the limiting ring groove 13, so that the rotating ring 14 can rotate quickly in the limiting ring groove 13, providing the rotation speed of the rotating ring 14.
[0029] Multiple sets of mixing plates 16 are inclined around the inner periphery of the roller 15. The mixing plates 16 are parallel to the first water spray nozzles 11 at the front and rear ends of the mixer assembly 9. The inclination angle of the mixing plates 16 is opposite to that of the first water spray nozzles 11. The water inlet 17 is located at the middle of the rear end of the mixing plate 16. The water inlet 17 is parallel to the outlet of the first water spray nozzle 11. The mixing plate 16 has connecting grooves 18 on both sides of the water inlet 17. The connecting grooves 18 are connected to the second water spray nozzles 19 on both sides of the outer end of the mixing plate 16. The water sprayed to the center of the mixing spiral of the mixing plate 16 is forced back to the center by the guide groove that throws it out of the mixing plate 16. The pure centrifugal tendency enhances the overall turbulence and mixing effect and improves the mixing uniformity.
[0030] When the hot water boiler body 1 experiences an abnormal load, the water pump is started to inject cooling water into the mixer assembly 9 located in the middle of the load control component 6 through the injection pipe 7. The mixer assembly 9 sprays hot water into the injection pipe 7 through the inclined first spray nozzles 11 on both sides, so that the cooling water mixes with the warm water in the outlet pipe 5 connected to the load control component 6, thereby reducing the load on the warm water in the outlet pipe 5. The water pump then extracts an equal amount of water through the extraction pipe 8 at the bottom front end of the load control component 6 to prevent the pressure of the mixed water in the outlet pipe 5 from rising. The load control is achieved by controlling the change in the amount of water injected and extracted through the water pump.
[0031] Furthermore, when the first water nozzle 11 sprays water, the impact force of the sprayed water begins to impact the mixing plate 16 inside the rotating ring 14, thereby driving the rotating ring 14 to rotate in the limiting ring groove 13 inside the connecting ring 12. The mixing plate 16 starts to stir and mix the sprayed cooling water and warm water by rotating, preventing the cooling water and the discharged warm water from mixing completely. Furthermore, the rollers 15 arranged around the outer periphery of the rotating ring 14 can reduce the friction of the rotating ring 14 in the limiting ring groove 13, allowing the rotating ring 14 to rotate quickly in the limiting ring groove 13, providing the rotation speed of the rotating ring 14. Furthermore, part of the cooling water sprayed from the first water nozzle 11 can be sprayed through the water inlet 17 opened in the middle of the mixing plate 16, and through the connecting grooves 18 on both sides of the water inlet 17, it can be sprayed out from the second water nozzles 19 on both sides of the end of the mixing plate 16, sprayed to the center of the stirring spiral of the mixing plate 16, and the water guide groove thrown out of the mixing plate 16 is forced to return to the center, pure centrifugal tendency, enhancing the overall turbulence and mixing effect, and improving the mixing uniformity.
[0032] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.
Claims
1. A rapid load change control device for a hot water boiler, characterized by: The hot water boiler body (1) is provided with a water outlet pipeline (5) on one side of the middle part, the water outlet pipeline (5) is provided with a lifting load control assembly (6), the passage of the water outlet pipeline (5) penetrates the lifting load control assembly (6), a mixer assembly (9) is arranged in the middle part of the lifting load control assembly (6), the middle part of the mixer assembly (9) is hollow, a plurality of groups of 30 0 Inclined mixer assembly (9).
2. A rapid load change control device for a hot water boiler according to claim 1, characterized in that: The chimney (2) is arranged in the middle of the top of the hot water boiler body (1), and the flue gas generated by combustion is discharged from the chimney (2); the combustion chamber (3) is arranged on one side of the bottom of the hot water boiler body (1), and the coal is combusted in the combustion chamber (3) to heat the heating chamber in the hot water boiler body (1).
3. A rapid load following control device for a hot water boiler as set forth in claim 2, characterized in that: The water inlet pipeline (4) is arranged on one side of the top of the hot water boiler body (1), and the water enters the heating chamber of the hot water boiler body (1) from the water inlet pipeline (4); the water outlet pipeline (5) is arranged on one side of the middle of the hot water boiler body (1), and the hot water in the heating chamber is discharged through the water outlet pipeline (5).
4. A rapid load change control device for a hot water boiler according to claim 3, characterized in that: The injection pipe (7) is inserted on one side of the lifting load regulation assembly (6), the inner side of the injection pipe (7) is connected with the middle of the mixer assembly (9) in the lifting load regulation assembly (6), the injection pipe (7) is communicated with the inside of the mixer assembly (9), the outer side end of the injection pipe (7) is connected with the output end of the high-pressure water injection pump, the extraction pipe (8) is inserted on the bottom of the front end of the mixer assembly (9) in the lifting load regulation assembly (6), the extraction pipe (8) is arranged at the rear end of the outlet of the water outlet pipeline (5), and the other end of the extraction pipe (8) is connected with the water pumping end of the high-pressure water injection pump.
5. A rapid load following control device for a hot water boiler as set forth in claim 4, characterized in that: The fixed rods (10) are arranged around the outer side of the mixer assembly (9), the other sections of the fixed rods (10) are connected with the inner wall of the lifting load regulation assembly (6), the mixer assembly (9) is fixed in the middle of the lifting load regulation assembly (6) through the fixed rods (10), and there is a spacing between the mixer assembly (9) and the inner wall of the lifting load regulation assembly (6).
6. A rapid load swing control device for a hot water boiler according to claim 5, characterized in that: The connecting rings (12) are fixedly connected with the front and rear ends of the fixed rods (10), the limit ring grooves (13) are formed in the inner sides of the connecting rings (12), the rotating rings (14) are clamped in the limit ring grooves (13), the rotating rings (14) embrace around the mixer assembly (9), and are parallel to the first water injection ports (11) arranged at the front and rear ends of the mixer assembly (9).
7. A rapid load following control device for a hot water boiler as set forth in claim 6, characterized in that: The rotating rings (14) can rotate in the limit ring grooves (13), a plurality of groups of the rollers (15) are rotatably connected around the outer sides of the rotating rings (14), the rollers (15) are tightly attached to the inner side walls of the limit ring grooves (13), and the rollers (15) can reduce the friction of the rotating rings (14) rotating in the limit ring grooves (13).
8. A rapid load swing control device for a hot water boiler according to claim 7, characterized in that: A plurality of groups of the mixing plates (16) are obliquely arranged around the inner sides of the rollers (15), the mixing plates (16) are parallel to the first water injection ports (11) arranged at the front and rear ends of the mixer assembly (9), and the inclination angles of the mixing plates (16) are opposite to the inclination angles of the first water injection ports (11).
9. A rapid load swing control device for a hot water boiler according to claim 8, characterized in that: The water inlets (17) are arranged at the rear ends of the middle of the mixing plates (16), the water inlets (17) are parallel to the water outlets of the first water injection ports (11), the communication grooves (18) are formed in the two sides of the water inlets (17), and the communication grooves (18) are communicated with the second water injection ports (19) arranged at the two sides of the outer side ends of the mixing plates (16).