A device for regulating the heating capacity of a thermal power unit

Abstract

The application belongs to the technical field of heat regulating equipment, and discloses a thermal power unit heat supply capacity adjusting device, which comprises a water storage box, a controller, a water inlet pipeline, an exhaust pipeline and a pressure detector, the middle part of the top of the water storage box is fixedly connected with a protruding block, the top of the protruding block is fixedly connected with a cross connecting block, and the inner cavities on the two sides of the cross connecting block are fixedly connected with a first square pipeline and a second square pipeline. The cooperation between the structures such as the rotating shaft rod, the square piston block, the pressure detector and the controller enables the device to have a good control and calculate the water flow in the pipeline, the rotating annular handle drives the rotating shaft rod to rotate, and then the square piston block moves downward, the water flow through the cross connecting block can be accurately calculated by the formula and displayed on the display screen of the controller, and then the heat supply capacity of the device is adjusted.

Description

Technical Field

[0001] This invention belongs to the technical field of heating regulation equipment, specifically a heating capacity regulation device for thermal power units. Background Technology

[0002] With the sustained and rapid growth of the national economy, the heat consumption of large heat-consuming enterprises in industries such as petroleum, chemical, textile, and papermaking has also increased significantly. The implementation of national energy conservation and emission reduction policies has led to the gradual closure of small heating boilers, which are being replaced by large power plants for heating. These large-capacity heating and power generation units have high heating steam parameters and low unit energy consumption, which not only meet the heating parameter requirements of various heat users but also save energy, reduce pollution, and have become the main source of heat at present. In recent years, along with rapid economic growth and the continuous increase in power generation capacity, the electricity consumption structure has also been constantly changing. The proportion of electricity consumption in continuous industrial production has been declining year by year, while the proportion of electricity consumption by urban and rural residents and municipal commerce has been gradually increasing. This inevitably leads to a greater peak-valley difference in the daily operation of the local power system, which is most evident at night and on holidays. Therefore, it is necessary to use relevant regulating devices for the rational operation of heating pipelines to regulate heating capacity.

[0003] Currently, when adjusting the heating capacity of hot water pipes, valves are often used to control the flow rate of water in the pipes. By rotating the valve, the gap between the piston connected to the valve and the inner wall of the pipe is reduced, thereby controlling the water output flow rate and thus controlling the heating capacity of the thermal power unit. However, because the piston connected to the existing valve is spherical with a horizontal cylindrical hole in the middle, the cross-sectional area between the piston and the inner wall of the pipe decreases when the piston rotates. At the same time, when the cylindrical hole tilts, it forms a pressure cavity under the impact of the water flow, further compressing the cross-sectional area between the piston and the inner wall of the pipe. This leads to a large error in measuring and controlling the water flow rate in the pipe, resulting in misjudgments of the water flow rate control. Therefore, a heating capacity adjustment device for thermal power units is proposed to solve the problems mentioned in the background technology. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the problems mentioned in the background art, the present invention provides a heating capacity regulating device for thermal power units. When measuring and controlling the flow rate of water in the pipeline, there will be a large error, which will lead to the misjudgment of the flow rate control of water in the pipeline. This structure has the advantage of effectively controlling the output water flow rate of the pipeline.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a heating capacity adjustment device for a thermal power unit, comprising a water storage box, a controller, an inlet pipe, an exhaust pipe, and a pressure detector. A protrusion is fixedly connected to the center of the top of the water storage box, and a cross-shaped connecting block is fixedly connected to the top of the protrusion. A first square pipe and a second square pipe are fixedly connected to the inner cavities on both sides of the cross-shaped connecting block. A square piston block is movably connected to the top of the inner cavity of the cross-shaped connecting block. A rotating shaft is threadedly connected to the bottom of the inner cavity of the square piston block. A ring handle is fixedly connected to the upper middle part of the outer surface of the rotating shaft. A stop block is movably connected to the bottom of the inner cavity of the cross-shaped connecting block on the side away from the first square pipe. A first limiting rod is movably connected to the bottom of the inner cavity of the stop block. A first elastic spring is fixedly connected to the top of the first limiting rod. An L-shaped connecting pipe is fixedly connected to the inner cavity at the bottom of the first square pipe.

[0008] Preferably, a first transmission wheel is fixedly connected to the top of the outer surface of the rotating shaft, and a transmission belt is driven to the outer surface of the first transmission wheel. An outer shell is fixedly connected to the inner cavity on one side of the top of the water storage box, and a threaded rod is movably connected to the inner cavity at the top. A second limiting rod is fixedly connected to the front and rear ends of the inner cavity of the outer shell. A connecting disc and a piston disc are movably connected to the top and bottom of the outer surface of the second limiting rod, respectively. A third elastic spring is fixedly connected to the top of the piston disc. A second transmission wheel is fixedly connected to the top of the outer surface of the threaded rod, and one-way valves are fixedly connected to the inner cavities on both sides of the piston disc.

[0009] Preferably, a circular limiting block is fixedly connected to the middle of the inner cavity of the outer shell cylinder, and inclined blocks and sealing columns are movably connected to the inner cavities on both sides of the middle of the outer shell cylinder. An E-shaped connecting frame is fixedly connected to the outer side of the inclined block. A third limiting rod and a sealing cylinder are fixedly connected to both sides of the middle of the outer surface of the outer shell cylinder. A fourth elastic spring is sleeved in the inner cavity of the middle of the E-shaped connecting frame. A locking block is movably connected to the top of the inner cavity on the side of the inclined block away from the E-shaped connecting frame. A fifth elastic spring is fixedly connected to the end of the locking block near the E-shaped connecting frame.

[0010] Preferably, the middle part of the outer surface of the rotating shaft is movably engaged with the top of the inner cavity of the cross connecting block, the end of the first square pipe away from the rotating shaft is fixedly connected to the inner cavity of the top of the water storage box, the bottom end of the first square pipe extends to the bottom of the inner cavity of the water storage box, and the bottom of the middle part of the second square pipe is fixedly connected to the top of the water storage box.

[0011] Preferably, there are two pressure detectors, which are located at the top of the inner cavity of the first square pipe near the second square pipe and at the top of the inner cavity of the second square pipe near the first square pipe, respectively. The controller is located in front of the second square pipe, and the bottom of the controller is fixedly connected to the top of the water storage box. A display screen is provided on the second square pipe.

[0012] Preferably, one end of the top of the stop block extends above the bottom of the inner cavity of the second square pipe, the top of the stop block is directly below the bottom of the square piston block near the side of the second square pipe, one end of the bottom of the first limiting rod is fixedly connected to the bottom of the inner cavity of the square piston block, one end of the top of the first elastic spring is fixedly connected to the top of the inner cavity of the stop block, a communication port is provided at the top of the inside of the stop block, one end of the bottom of the L-shaped connecting pipe is fixedly connected to the inner cavity of the square piston block near the bottom of the L-shaped connecting pipe, and the end of the L-shaped connecting pipe near the square piston block is offset from the communication port.

[0013] Preferably, the inner cavity of the middle part of the connecting disc is threadedly connected to the upper middle part of the outer surface of the threaded rod. The diameter of the connecting disc is larger than the diameter of the ring limiting block and smaller than the diameter of the upper middle part of the inner cavity of the outer shell. The piston disc is matched with the inner cavity of the lower middle part of the outer shell.

[0014] Preferably, the diameter of the inner cavity of the outer shell is larger than the diameter of the piston disc, one end of the top of the third spring is fixedly connected to the bottom of the connecting disc, the inner cavity of the piston disc is movably connected to the lower middle part of the outer surface of the threaded rod, the third spring is movably sleeved on the outer surface of the threaded rod, and exhaust ports are provided at the top of both sides of the outer shell.

[0015] Preferably, the sealing post is located below the inclined block, and the end of the sealing post near the E-shaped connecting frame is fixedly connected to the bottom end of the E-shaped connecting frame. The end of the locking block away from the fifth elastic spring passes through the inclined block and extends to the outside of the inclined block. The end of the fifth elastic spring away from the locking block is fixedly connected to the inner cavity of the inclined block. The upper middle part of the outer surface of the piston disc is inclined. The inclined block cooperates with the piston disc. The lower middle part of the outer surface of the piston disc has slots on both sides, and the slots cooperate with the locking block to engage.

[0016] Preferably, the fourth elastic spring is located directly above the sealing cylinder, the outer surface of the third limiting rod is movably connected to the inner cavity of the E-shaped connecting frame, the two ends of the third limiting rod are fixedly connected to the third limiting rod and the inner cavity of the E-shaped connecting frame respectively, the outer surface of the bottom of the E-shaped connecting frame is movably connected to the inner cavity of the sealing cylinder on the side away from the outer shell cylinder, the diameter of the sealing column is smaller than the diameter of the inner cavity of the sealing cylinder, and one end of the top of the exhaust pipe is fixedly connected to the inner cavity of the bottom of the sealing cylinder on the side close to the outer shell cylinder.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention utilizes the cooperation between a rotating shaft, a square piston block, a pressure detector, and a controller to enable the device to effectively control and calculate the water flow rate in a pipeline. By rotating the ring handle, the rotating shaft will rotate, causing the square piston block to move downwards. This reduces the cross-sectional area connecting the cross-connecting block to the first and second square pipes, thereby reducing the water flow rate through the cross-connecting block. At this time, the pressure detector inside the first and second square pipes will measure the pressure on both sides. The water flow rate through the cross-connecting block can be calculated relatively accurately using a formula and displayed on the display screen of the controller, thereby adjusting the heating capacity of the device.

[0020] This invention utilizes the cooperation between a threaded rod, a third elastic spring, a piston disc, and a connecting disc to enable the device to regulate the internal pressure of the water storage box in response to changes in water flow. The rotation of the rotating shaft drives the first transmission wheel, the transmission belt, and the second transmission wheel to rotate, which in turn causes the threaded rod to rotate. This, in turn, causes the connecting disc to move the third elastic spring and the piston disc from the bottom of the outer shell cavity towards the center. When the water flow decreases, the pressure generated by water vapor inside the water storage box decreases, but the reduced pressure is still sufficient to push the piston disc upwards, thereby expelling the high-pressure gas inside the water storage box through the threaded rod exhaust port.

[0021] This invention, through the cooperation of structures such as the exhaust pipe, the inclined block, the E-shaped connecting frame, and the sealing column, enables the device to prevent excessive pressure inside the water storage box due to sudden damage to the pressure regulating equipment. The increase in air pressure inside the water storage box will push the piston disc to move upward, causing the piston disc to move to the upper middle part of the inner cavity of the outer shell. At this time, through the cooperation between the piston disc and the inclined block, the inclined block will drive the E-shaped connecting frame to move outward. At the same time, the sealing column will also move outward with the outward movement of the E-shaped connecting frame. At this time, the large air pressure inside the water storage box will be discharged through the exhaust pipe, avoiding the situation where the increased pressure inside the water storage box affects the water flow. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a front cross-sectional view of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0027] Figure 6 This is a schematic diagram of the connection structure of the first square pipe of the present invention;

[0028] Figure 7 This is an exploded view of the cross-shaped connecting block of the present invention;

[0029] Figure 8 This is a schematic diagram of the connection structure at the transmission belt of the present invention;

[0030] Figure 9 This is a schematic diagram of the connection structure at the piston disk of the present invention;

[0031] Figure 10 This is an exploded view of the threaded rod of the present invention;

[0032] Figure 11 This is an exploded view of the E-shaped connecting frame of the present invention.

[0033] In the diagram: 1. Water storage box; 2. Protrusion; 3. Cross connecting block; 4. Square piston block; 5. Rotating shaft rod; 6. First square pipe; 7. Second square pipe; 8. Ring handle; 9. Pressure detector; 10. Stop block; 11. First limit rod; 12. First elastic spring; 13. L-shaped connecting pipe; 14. Controller; 15. First transmission wheel; 16. Transmission belt; 17. Second transmission wheel; 18. Outer shell; 19. Threaded rod; 20. Second limit rod; 21. Connecting disc; 22. One-way valve; 23. Piston disc; 24. Third elastic spring; 25. Circular limiting block; 26. Inclined block; 27. E-shaped connecting frame; 28. Sealing cylinder; 29. ​​Exhaust pipe; 30. Sealing column; 31. Third limit rod; 32. Fourth elastic spring; 33. Locking block; 34. Fifth elastic spring; 35. Water inlet pipe. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on 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.

[0035] like Figures 1 to 11 As shown, the present invention provides a heating capacity adjustment device for a thermal power unit, including a water storage box 1, a controller 14, a water inlet pipe 35, an exhaust pipe 29, and a pressure detector 9. A protrusion 2 is fixedly connected to the middle of the top of the water storage box 1, and a cross-shaped connecting block 3 is fixedly connected to the top of the protrusion 2. A first square pipe 6 and a second square pipe 7 are fixedly connected to the inner cavities on both sides of the cross-shaped connecting block 3. A square piston block 4 is movably connected to the top of the inner cavity of the cross-shaped connecting block 3. A rotating shaft 5 is threadedly connected to the bottom of the inner cavity of the square piston block 4. An annular handle 8 is fixedly connected to the upper middle part of the outer surface of the rotating shaft 5. A stop block 10 is movably connected to the bottom of the inner cavity of the cross-shaped connecting block 3 on the side away from the first square pipe 6. A first limiting rod 1 is movably connected to the bottom of the inner cavity of the stop block 10. 1. A first elastic spring 12 is fixedly connected to the top of the first limiting rod 11, and an L-shaped connecting pipe 13 is fixedly connected to the inner cavity of the bottom of the first square pipe 6. By rotating the ring handle 8, the rotating shaft rod 5 will be rotated, which will cause the square piston block 4 to move downward, thereby reducing the cross-sectional area connecting the cross connecting block 3 with the first square pipe 6 and the second square pipe 7, thereby reducing the flow rate of water through the cross connecting block 3. At this time, the pressure detector 9 inside the first square pipe 6 and the second square pipe 7 will measure the pressure on both sides. The flow rate of water through the cross connecting block 3 can be calculated more accurately by the formula and displayed on the display screen on the controller 14, thereby adjusting the heating capacity of the device.

[0036] like Figure 1 , Figure 4 , Figure 8 , Figure 9 , Figure 10As shown, a first transmission wheel 15 is fixedly connected to the top of the outer surface of the rotating shaft 5. A transmission belt 16 is connected to the outer surface of the first transmission wheel 15. An outer shell cylinder 18 is fixedly connected to the inner cavity on one side of the top of the water storage box 1. A threaded rod 19 is movably connected to the inner cavity at the top. A second limiting rod 20 is fixedly connected to the front and rear ends of the inner cavity of the outer shell cylinder 18. A connecting disc 21 and a piston disc 23 are movably connected to the top and bottom of the outer surface of the second limiting rod 20, respectively. A third elastic spring 24 is fixedly connected to the top of the piston disc 23. A second transmission wheel 17 is fixedly connected to the top of the outer surface of the threaded rod 19. The inner cavities on both sides of the piston disc 23 are fixedly connected to the connecting disc 21. A one-way valve 22 is connected; the rotation of the rotating shaft 5 drives the first transmission wheel 15, the transmission belt 16 and the second transmission wheel 17 to rotate, thereby causing the threaded rod 19 to rotate. This causes the connecting disc 21 to drive the third elastic spring 24 and the piston disc 23 to move from the bottom of the inner cavity of the outer shell cylinder 18 towards the middle of the inner cavity. When the water flow decreases, the pressure generated by the water vapor inside the water storage box 1 will decrease. The reduced pressure is still sufficient to push the piston disc 23 to move upward, thereby discharging the gas with higher pressure inside the water storage box 1 through the exhaust port of the threaded rod 19.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, a circular limiting block 25 is fixedly connected to the middle of the inner cavity of the outer shell cylinder 18. An inclined block 26 and a sealing post 30 are movably connected to the inner cavities on both sides of the middle of the outer shell cylinder 18. An E-shaped connecting frame 27 is fixedly connected to the outer side of the inclined block 26. A third limiting rod 31 and a sealing cylinder 28 are fixedly connected to both sides of the middle of the outer surface of the outer shell cylinder 18. A fourth elastic spring 32 is sleeved in the inner cavity of the middle of the E-shaped connecting frame 27. A locking block 33 is movably connected to the top of the inner cavity on the side of the inclined block 26 away from the E-shaped connecting frame 27. A fifth elastic spring 34 is fixedly connected to the end of the locking block 33 near the E-shaped connecting frame 27. The increase in air pressure inside the water storage box 1 will push the piston disc 23 to move upward, causing the piston disc 23 to move to the upper middle part of the inner cavity of the outer shell cylinder 18. At this time, through the cooperation between the piston disc 23 and the inclined block 26, the inclined block 26 will drive the E-shaped connecting frame 27 to move outward. At the same time, the sealing column 30 will also move outward as the E-shaped connecting frame 27 moves outward. At this time, the large air pressure inside the water storage box 1 will be discharged through the exhaust pipe 29, avoiding the situation where the increased pressure inside the water storage box 1 affects the water flow.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7As shown, the middle of the outer surface of the rotating shaft 5 is movably engaged with the top of the inner cavity of the cross connecting block 3. The end of the first square pipe 6 away from the rotating shaft 5 is fixedly connected to the inner cavity of the top of the water storage box 1. The bottom end of the first square pipe 6 extends to the bottom of the inner cavity of the water storage box 1. The bottom of the middle part of the second square pipe 7 is fixedly connected to the top of the water storage box 1. There are two pressure detectors 9. The two pressure detectors 9 are located at the top of the inner cavity of the first square pipe 6 near the second square pipe 7 and the top of the inner cavity of the second square pipe 7 near the first square pipe 6, respectively. The controller 14 is located in front of the second square pipe 7. The bottom of the controller 14 is fixedly connected to the top of the water storage box 1. A display screen is provided on the second square pipe 7. Through the design of the pressure detectors 9 on both sides, the pressure on both sides of the rotating shaft 5 is measured. At the same time, since the distance of the square piston block 4 descending can be measured by the number of rotations of the rotating shaft 5, the cross-section of the water flow at the source can be obtained by subtracting the descending area of ​​the square piston block 4 from the cross-section at the opening of the first square pipe 6.

[0039] It is worth noting that the distance the rotating shaft 5 moves downward is known, and the cross-section of the water source flowing through the rotating shaft 5 will change as the rotating shaft 5 descends.

[0040] At this time, the controller 14 can calculate the flow rate of the water source passing through the rotating shaft 5 using the formula Q=μ*A*(2*P / ρ)^0.5, and then determine the heating capacity of the output device so as to facilitate people's control.

[0041] In the formula, Q represents flow rate, in m^ / S.

[0042] μ—flow coefficient, which is related to the shape of the valve or pipe; 0.6~0.65

[0043] A – Area, m^2

[0044] P — Pressure difference across the valve, unit: Pa.

[0045] ρ — the density of the fluid, kg / m^3.

[0046] like Figure 1 , Figure 4 , Figure 8 , Figure 9 , Figure 10As shown, one end of the top of the stop block 10 extends above the bottom of the inner cavity of the second square pipe 7. The top of the stop block 10 is directly below the bottom of the square piston block 4 near the side of the second square pipe 7. One end of the bottom of the first limiting rod 11 is fixedly connected to the bottom of the inner cavity of the square piston block 4. One end of the top of the first elastic spring 12 is fixedly connected to the top of the inner cavity of the stop block 10. A communication port is provided at the top of the interior of the stop block 10. One end of the bottom of the L-shaped connecting pipe 13 is fixedly connected to the inner cavity of the square piston block 4 near the bottom of the L-shaped connecting pipe 13. One end of the near-square piston block 4 is offset from the connecting port; through the design of the stop block 10, when the square piston block 4 descends to contact the top of the stop block 10, in conjunction with the limiting effect of the first limiting rod 11, the stop block 10 will move downward, and the connecting port inside the stop block 10 will connect with the side of the L-shaped connecting pipe 13 near the first limiting rod 11, thereby discharging the water source at the bottom of the inner cavity of the rotating shaft rod 5 through the L-shaped connecting pipe 13 into the inner cavity of the second square pipe 7 at the end of the L-shaped connecting pipe 13 away from the first limiting rod 11.

[0047] like Figure 1 , Figure 4 , Figure 8 , Figure 9 , Figure 10 As shown, the inner cavity of the connecting disc 21 is threadedly connected to the upper middle part of the outer surface of the threaded rod 19. The diameter of the connecting disc 21 is larger than the diameter of the annular limiting block 25 and smaller than the diameter of the upper middle part of the inner cavity of the outer shell 18. The piston disc 23 is fitted with the inner cavity of the lower middle part of the outer shell 18. The diameter of the middle part of the inner cavity of the outer shell 18 is larger than the diameter of the piston disc 23. One end of the top of the third spring 24 is fixedly connected to the bottom of the connecting disc 21. The inner cavity of the piston disc 23 is movably connected to the lower middle part of the outer surface of the threaded rod 19. 4. The outer surface of the threaded rod 19 is movably sleeved, and exhaust ports are provided on the top of both sides of the outer casing 18. Through the design of the outer casing 18, when the increased air pressure below the piston disc 23 squeezes the piston disc 23 and moves it upward, the increased gas will be discharged through the gap between the piston disc 23 and the middle of the outer casing 18, and finally discharged through the exhaust port at the top of the outer casing 18. This balances the situation where the change in internal pressure caused by the change in heating capacity leads to the change in water flow in the water storage box 1, which affects the water flow.

[0048] like Figure 4 , Figure 5 , Figure 8 , Figure 11As shown, the sealing post 30 is located below the inclined block 26. One end of the sealing post 30 near the E-shaped connecting bracket 27 is fixedly connected to one end of the bottom of the E-shaped connecting bracket 27. The end of the locking block 33 away from the fifth spring 34 passes through the inclined block 26 and extends to the outside of the inclined block 26. The end of the fifth spring 34 away from the locking block 33 is fixedly connected to the inner cavity of the inclined block 26. The upper middle part of the outer surface of the piston disc 23 is inclined. The inclined block 26 cooperates with the piston disc 23. The lower middle part of the outer surface of the piston disc 23 has slots on both sides. The locking block 33 engages with the piston disc 23. As the internal air pressure of the water storage box 1 increases, the piston disc 23 will move upward, causing the top of the piston disc 23 to contact the bottom of the circular limiting block 25, thus limiting the piston disc 23. The engagement between the locking block 33 and the locking slot ensures that if the third spring 24 is damaged, the piston disc 23 will not fall into the bottom of the inner cavity of the outer shell cylinder 18 due to the lack of elastic support, thus preventing the piston disc 23 from failing to regulate the internal air pressure of the water storage box 1.

[0049] like Figure 4 , Figure 5 , Figure 8 , Figure 11 As shown, the fourth elastic spring 32 is located directly above the sealing cylinder 28. The outer surface of the third limiting rod 31 is movably connected to the inner cavity of the E-shaped connecting frame 27. The two ends of the third limiting rod 31 are fixedly connected to the inner cavity of the E-shaped connecting frame 27 and the third limiting rod 31, respectively. The outer surface of the bottom of the E-shaped connecting frame 27 is movably connected to the inner cavity of the sealing cylinder 28 on the side away from the outer shell cylinder 18. The diameter of the sealing column 30 is smaller than the diameter of the inner cavity of the sealing cylinder 28. One end of the top of the exhaust pipe 29 is fixedly connected to the inner cavity of the bottom of the sealing cylinder 28 on the side close to the outer shell cylinder 18. Through the cooperation between the sealing cylinder 28 and the sealing column 30, when the sealing column 30 moves towards the sealing cylinder 28, the sealing cylinder 28 can be closed. When the inner cavity of the sealing cylinder 28 moves, the increased gas inside the outer shell cylinder 18 is discharged through the exhaust pipe 29. At this time, the third limiting rod 31 limits the movement of the E-shaped connecting frame 27, and the fourth elastic spring 32 provides elastic force to the E-shaped connecting frame 27 and the inclined block 26 towards the side of the outer shell cylinder 18. Only when the lateral force of the branch of the upward movement of the piston disc 23 is greater than the elastic force of the fourth elastic spring 32 can the sealing column 30 be opened, thereby balancing the increased gas pressure inside the water storage box 1 to a certain extent and giving the operator a certain buffer time when maintenance is needed.

[0050] Working principle and usage process of this invention:

[0051] First, the heated water enters the inner cavity of the water storage box 1 through the inlet pipe 35, and then exits through the first square pipe 6, the cross connecting block 3, and the second square pipe 7. When the operator needs to adjust the heating capacity of the device, rotating the ring handle 8 will drive the rotating shaft 5 to rotate, which will cause the square piston block 4 to move downward, thereby reducing the cross-sectional area connecting the cross connecting block 3 with the first square pipe 6 and the second square pipe 7, thus reducing the flow rate of the water source through the cross connecting block 3. At this time, the pressure detector 9 inside the first square pipe 6 and the second square pipe 7 will measure the pressure on both sides. The flow rate of the water source through the cross connecting block 3 can be calculated more accurately by the formula and displayed on the display screen on the controller 14, thereby adjusting the heating capacity of the device.

[0052] When the operator adjusts the water flow rate, i.e. the heating capacity, of the device, the water flow rate entering the inner cavity of the water storage box 1 will also change with the change in heating capacity. When the rotating shaft 5 rotates, it will also drive the first transmission wheel 15, the transmission belt 16 and the second transmission wheel 17 to rotate, thereby causing the threaded rod 19 to rotate. This causes the connecting disc 21 to drive the third spring spring 24 and the piston disc 23 to move from the bottom of the inner cavity of the outer shell cylinder 18 to the middle of the inner cavity of the outer shell cylinder 18. When the water flow rate decreases, the pressure generated by the water vapor inside the water storage box 1 will decrease. The reduced pressure is still sufficient to push the piston disc 23 to move upward, thereby expelling the gas with higher pressure inside the water storage box 1 through the exhaust port of the threaded rod 19.

[0053] When the device is used for a long time, the third spring 24 may be damaged. At this time, the increase in air pressure inside the water storage box 1 will push the piston disc 23 to move upward, so that the piston disc 23 moves to the upper middle part of the inner cavity of the outer shell cylinder 18. At this time, through the cooperation between the piston disc 23 and the inclined block 26, the inclined block 26 will drive the E-shaped connecting frame 27 to move outward. At the same time, the sealing column 30 will also move outward as the E-shaped connecting frame 27 moves outward. At this time, the large air pressure inside the water storage box 1 will be discharged through the exhaust pipe 29, avoiding the situation where the increased pressure inside the water storage box 1 affects the water flow.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating capacity regulating device for a thermal power unit, comprising a water storage box (1), a controller (14), an inlet pipe (35), an exhaust pipe (29), and a pressure detector (9), characterized in that: A protrusion (2) is fixedly connected to the middle of the top of the water storage box (1). A cross connecting block (3) is fixedly connected to the top of the protrusion (2). A first square pipe (6) and a second square pipe (7) are fixedly connected to the inner cavities on both sides of the cross connecting block (3). A square piston block (4) is movably connected to the top of the inner cavity of the cross connecting block (3). A rotating shaft rod (5) is threadedly connected to the bottom of the inner cavity of the square piston block (4). A ring handle (8) is fixedly connected to the upper middle part of the outer surface of the rotating shaft rod (5). A stop block (10) is movably connected to the bottom of the inner cavity of the cross connecting block (3) on the side away from the first square pipe (6). A first limiting rod (11) is movably connected to the bottom of the inner cavity of the stop block (10). A first elastic spring (12) is fixedly connected to the top of the first limiting rod (11). An L-shaped connecting pipe (13) is fixedly connected to the inner cavity at the bottom of the first square pipe (6). The top of the outer surface of the rotating shaft (5) is fixedly connected to a first transmission wheel (15), and the outer surface of the first transmission wheel (15) is connected to a transmission belt (16). The inner cavity of the top side of the water storage box (1) is fixedly connected to an outer shell cylinder (18), and the inner cavity of the top is movably connected to a threaded rod (19). The front and rear ends of the inner cavity of the outer shell cylinder (18) are fixedly connected to a second limiting rod (20). The top and bottom of the outer surface of the second limiting rod (20) are movably connected to a connecting disc (21) and a piston disc (23), respectively. The top of the piston disc (23) is fixedly connected to a third elastic spring (24). The top of the outer surface of the threaded rod (19) is fixedly connected to a second transmission wheel (17), and the inner cavities on both sides of the piston disc (23) are fixedly connected to a one-way valve (22). A circular limiting block (25) is fixedly connected to the middle of the inner cavity of the outer shell cylinder (18). An inclined block (26) and a sealing column (30) are movably connected to the inner cavities on both sides of the middle of the outer shell cylinder (18). An E-shaped connecting frame (27) is fixedly connected to the outer side of the inclined block (26). A third limiting rod (31) and a sealing cylinder (28) are fixedly connected to both sides of the middle of the outer surface of the outer shell cylinder (18). A fourth elastic spring (32) is sleeved in the inner cavity of the middle of the E-shaped connecting frame (27). A locking block (33) is movably connected to the top of the inner cavity on the side of the inclined block (26) away from the E-shaped connecting frame (27). A fifth elastic spring (34) is fixedly connected to the end of the locking block (33) near the E-shaped connecting frame (27). The diameter of the inner cavity of the outer shell cylinder (18) is larger than the diameter of the piston disc (23). One end of the top of the third elastic spring (24) is fixedly connected to the bottom of the connecting disc (21). The inner cavity of the piston disc (23) is movably connected to the lower middle part of the outer surface of the threaded rod (19). The third elastic spring (24) is movably sleeved on the outer surface of the threaded rod (19). Exhaust ports are provided on the top of both sides of the outer shell cylinder (18).

2. The heating capacity regulating device for a thermal power unit according to claim 1, characterized in that: The middle part of the outer surface of the rotating shaft (5) is movably engaged with the top of the inner cavity of the cross connecting block (3). The end of the first square pipe (6) away from the rotating shaft (5) is fixedly connected to the inner cavity of the top of the water storage box (1). The bottom end of the first square pipe (6) extends to the bottom of the inner cavity of the water storage box (1). The bottom of the middle part of the second square pipe (7) is fixedly connected to the top of the water storage box (1).

3. The heating capacity regulating device for a thermal power unit according to claim 1, characterized in that: There are two pressure detectors (9). The two pressure detectors (9) are located at the top of the inner cavity of the first square pipe (6) near the second square pipe (7) and the top of the inner cavity of the second square pipe (7) near the first square pipe (6). The controller (14) is located in front of the second square pipe (7). The bottom of the controller (14) is fixedly connected to the top of the water storage box (1). A display screen is provided on the second square pipe (7).

4. The heating capacity regulating device for a thermal power unit according to claim 1, characterized in that: One end of the top of the stop block (10) extends above the bottom of the inner cavity of the second square pipe (7). The top of the stop block (10) is directly below the bottom of the square piston block (4) on the side near the second square pipe (7). One end of the bottom of the first limiting rod (11) is fixedly connected to the bottom of the inner cavity of the square piston block (4). One end of the top of the first elastic spring (12) is fixedly connected to the top of the inner cavity of the stop block (10). A communication port is provided at the top of the inside of the stop block (10). One end of the bottom of the L-shaped connecting pipe (13) is fixedly connected to the inner cavity of the square piston block (4) on the side near the bottom of the L-shaped connecting pipe (13). One end of the L-shaped connecting pipe (13) near the square piston block (4) is offset from the communication port.

5. The thermal power unit heating capacity regulating device according to claim 1, characterized in that: The inner cavity of the middle part of the connecting disc (21) is threadedly connected to the upper middle part of the outer surface of the threaded rod (19). The diameter of the connecting disc (21) is greater than the diameter of the ring limiting block (25) and smaller than the diameter of the upper middle part of the inner cavity of the outer shell cylinder (18). The piston disc (23) is matched with the inner cavity of the lower middle part of the outer shell cylinder (18).

6. A thermal power unit heating capacity regulating device according to claim 1, characterized in that... The sealing column (30) is located below the inclined block (26). The end of the sealing column (30) near the E-shaped connecting frame (27) is fixedly connected to the bottom end of the E-shaped connecting frame (27). The end of the locking block (33) away from the fifth elastic spring (34) passes through the inclined block (26) and extends to the outside of the inclined block (26). The end of the fifth elastic spring (34) away from the locking block (33) is fixedly connected to the inner cavity of the inclined block (26). The upper middle part of the outer surface of the piston disc (23) is inclined. The inclined block (26) cooperates with the piston disc (23). The two sides of the lower middle part of the outer surface of the piston disc (23) are provided with locking slots. The locking slots cooperate with the locking block (33) to engage.

7. The thermal power unit heating capacity regulating device according to claim 1, characterized in that: The fourth elastic spring (32) is located directly above the sealing cylinder (28). The outer surface of the third limiting rod (31) is movably connected to the inner cavity of the E-shaped connecting frame (27). The two ends of the third limiting rod (31) are fixedly connected to the inner cavity of the third limiting rod (31) and the E-shaped connecting frame (27), respectively. The outer surface of the bottom of the E-shaped connecting frame (27) is movably connected to the inner cavity of the sealing cylinder (28) on the side away from the outer shell cylinder (18). The diameter of the sealing column (30) is smaller than the diameter of the inner cavity of the sealing cylinder (28). One end of the top of the exhaust pipe (29) is fixedly connected to the inner cavity of the bottom of the sealing cylinder (28) on the side close to the outer shell cylinder (18).

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