Energy-saving straight-flow boiler based on heat transfer efficiency monitoring

Abstract

The invention relates to the technical field of heat energy engineering, in particular to an energy-saving straight-flow boiler based on heat transfer efficiency monitoring, which comprises an air-fuel supply group, the air-fuel supply group comprises a pipeline connecting group, a fuel valve, an air inlet valve and a linkage mechanism are arranged on the pipeline connecting group, a rotatable baffle plate is arranged in the fuel valve, a cam is arranged below the baffle plate, and the air inlet valve is arranged below the cam. A rotary air door with a lower rocker is arranged in the air inlet valve and is connected with the cam through a connecting rod to form mechanical linkage with the lower rocker; a pressure protection set is arranged on the air inlet valve and comprises a metal elastic piece arranged in the fuel pipeline, a piston in the air cylinder is connected with a blocking rod with a blocking piece, the blocking rod and a disc spring set form a pressure triggering mechanism, and when the pressure of the pipeline is abnormal, the disc spring set executes emergency closing of the air door. The air-fuel mass ratio is accurately controlled through directional linkage of mechanical elements, and overpressure / negative pressure dual-mode protection is achieved through an autonomous protection mechanism when pressure is abnormal, linkage of a piston in a cylinder and pipeline pressure and cooperation of a driving stop lever and a disc spring set.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal energy engineering, and more particularly to an energy-saving once-through boiler based on monitoring of heat transfer efficiency. Background Art

[0002] As the core equipment for industrial thermal energy supply, the safety and combustion efficiency of traditional boiler systems highly depend on the real-time monitoring of various parameters such as temperature, pressure, and air-fuel ratio by various sensors.

[0003] However, the operating environment of boilers is usually accompanied by multiple harsh conditions such as high temperature (up to over 800 °C), high humidity, strong vibration, and corrosive gases. Under high-temperature working conditions, sensors generally face problems such as degradation of the material properties of sensing elements caused by thermal stress, significant thermal drift of electronic components, and easy aging and cracking of sensor packaging materials under the action of thermal cycling, which greatly shortens the service life. The above problems are particularly prominent when the boiler is operating at overload or with abnormal combustion. For example, when backfire or local overheating occurs in the combustion chamber, the high-temperature thermal shock can instantly damage adjacent temperature or pressure sensors, resulting in the control system losing key monitoring data and being unable to trigger an alarm or execute a protection action in time.

[0004] More seriously, in the event of emergency conditions such as fuel leakage or air supply failure in the boiler, the traditional sensor-dependent control system has a risk of cascading failure. Taking the air-fuel ratio control as an example, if the oxygen sensor is damaged due to high temperature, the control system will be unable to obtain real-time air flow data, and then wrongly adjust the opening degrees of the fuel valve and the air damper, resulting in incomplete combustion or an excessive air coefficient. Such harmful gases not only reduce the thermal efficiency of the boiler, but also pose a direct threat to the ecological environment and human health. In addition, sensor failures may cause the safety interlock mechanism to fail. For example, in the event of deflagration or pipeline rupture, the solenoid valve cannot cut off the fuel supply emergently due to the interruption of the control signal, and manual intervention is required, which greatly increases the probability of accident expansion.

[0005] In view of this, there is an urgent need for an energy-saving once-through boiler based on monitoring of heat transfer efficiency to improve the deficiencies of the existing technology. Summary of the Invention

[0006] The object of the present invention is to provide an energy-saving once-through boiler based on heat transfer efficiency monitoring, which precisely controls the air-fuel mass ratio through the directional linkage of mechanical components, and through an autonomous protection mechanism in case of abnormal pressure, the in-cylinder piston is linked with the pipeline pressure to drive the cooperation of the shift lever and the disc spring group to achieve overpressure / negative pressure dual-mode protection. When the pipeline pressure exceeds the rated value, the piston displacement triggers the action of the disc spring group, forcibly closing the air damper and linking the fuel valve baffle. The stiffness coefficient of the disc spring group is twice the rotational resistance of the air damper. In case of sudden load change or flashback, the dual valves are synchronously cut off through the direct conversion of mechanical energy, without relying on external power or sensors, eliminating the risk of deflagration caused by the failure of the electronic system, so as to solve the problems raised in the above background technology, that is:

[0007] Traditional boilers highly rely on various sensors for real-time monitoring of parameters such as temperature, pressure, and air-fuel ratio. However, the operating environment of boilers is usually accompanied by multiple harsh conditions such as high temperature, high humidity, strong vibration, and corrosive gases. Sensors are extremely vulnerable to damage in a high-temperature environment, resulting in the control system losing key monitoring data and being unable to trigger alarms or execute protection actions in a timely manner.

[0008] To achieve the above object, the present invention provides an energy-saving once-through boiler based on heat transfer efficiency monitoring, including an air-fuel supply group. The air-fuel supply group includes a pipeline connection group. A fuel valve, an intake valve, and a linkage mechanism are arranged on the pipeline connection group. A rotatable baffle is provided inside the fuel valve, and a cam is provided below the baffle. A rotary air damper with a lower rocker is provided inside the intake valve, and a mechanical linkage is formed by connecting the cam and the lower rocker through a connecting rod.

[0009] A pressure protection group is provided on the intake valve. The pressure protection group includes a metal shrapnel arranged in the fuel pipeline and a cylinder communicated with the pipeline. A piston in the cylinder is connected to a shift lever with a retaining piece, and the shift lever and the disc spring group constitute a pressure trigger mechanism. When the pipeline pressure is abnormal, the disc spring group is triggered to execute an emergency closing of the air damper.

[0010] In addition, an anti-fall group is provided to lock the piston position in the non-working state.

[0011] In the above technical solution, the fuel and air supply amounts are synchronously adjusted through the linkage mechanism. The rotary baffle of the fuel valve controls the fuel flow rate under the drive of the cam. At the same time, the cam drives the lower rocker of the intake valve through the connecting rod to link the opening degree of the rotary air damper, realizing the dynamic matching of the air-fuel ratio. When the fuel pipeline pressure is abnormal, the metal shrapnel triggers the disc spring group in the cylinder to release elastic potential energy, pushing the shift lever with a retaining piece to urgently close the air damper. The pressure protection group completes the safety response within 0.2 - 0.5 seconds. The anti-fall group fixes the piston position through a mechanical locking mechanism during shutdown, forming a three-level safety guarantee system to ensure safe operation.

[0012] On this basis, the fuel and air delivery paths are optimized and integrated through a pipeline connection group. The main channel directly delivers the fuel output by the fuel valve to the combustion chamber to form a core energy supply path. The branch channel uses the flexible expansion and contraction characteristics of the bellows to connect the intake valve and the fire check valve. The fire check valve blocks the reverse propagation of the flame. The bellows synchronously absorbs the vibration energy of the pipeline, and the rigid sealing structure effectively blocks the risk of flashback.

[0013] In another technical solution, an anti-falling group is provided outside the cylinder. When the boiler stops firing, the spring force drives the bolt to insert into the piston guide groove to lock its position. During operation, the air flow of the air damper pushes the swing arm to disengage the bolt. The axial stiffness of the disc spring group is 2 times the rotational resistance of the air damper. The combined disc spring plates are treated with surface nitriding. The disc spring group is released, and the disc spring group drives the second rotating shaft to rotate, driving the linkage group to close the fuel valve.

[0014] In this technical solution, the anti-falling group realizes mechanical locking during shutdown by driving the bolt to embed into the piston guide groove through the spring pre-tightening force. After the boiler starts, the air flow of the air damper drives the swing arm to overcome the spring force to withdraw the bolt from the guide groove, releasing the piston constraint; the disc spring group is stacked with multiple nitriding-strengthened discs, and its axial stiffness is 2 times the rotational resistance of the air damper, ensuring that the elastic potential energy is preferentially released when the pressure is abnormal. The disc spring group drives the linkage group to rotate synchronously through the second rotating shaft, and closes the fuel valve synchronously with a response speed of 0.15 seconds, rigidly locking the fuel supply while avoiding the risk of disc spring creep.

[0015] The wind deflector of the anti-falling group is hinged to the inner wall of the air damper and is linked with the bolt through a rigid connecting rod. When the air flow velocity in the air damper > 2m / s, the deflection angle of the wind deflector > 30°, and the bolt completely disengages from the cylinder jack.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This energy-saving once-through boiler based on heat transfer efficiency monitoring accurately controls the air-fuel mass ratio through the directional linkage of mechanical components, and has an autonomous protection mechanism in case of abnormal pressure;

[0018] The first rotating shaft of the fuel valve drives the linkage arm of the air branch through a cam and an adjustable connecting rod, realizing a rigid proportional linkage between the cross-sectional area of the fuel channel and the opening degree of the air damper blades;

[0019] The piston in the cylinder is linked with the pipeline pressure, driving the cooperation of the shift lever and the disc spring group to realize overpressure / negative pressure dual-mode protection. When the pipeline pressure exceeds the rated value, the piston displacement triggers the action of the disc spring group, forcibly closing the air damper and linking the fuel valve baffle;

[0020] The stiffness coefficient of the disc spring group is 2 times the rotational resistance of the air damper. When the load suddenly changes or there is flashback, the double valves are synchronously cut off through the direct conversion of mechanical energy, without relying on external power or sensors, eliminating the risk of deflagration caused by the failure of the electronic system;

[0021] The metal shrapnel forms turbulence in the main pipeline, forcing the air and fuel to be premixed evenly. Combined with the fire-proof check valve connected by the bellows, it can absorb the energy of the combustion shock wave, block the reverse propagation of the flame, and reduce the flashback rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0023] Figure 2 It is a schematic diagram of the structure of the air-fuel supply group of the embodiment;

[0024] Figure 3 A schematic diagram of the structure of a pipeline connection group in an embodiment;

[0025] Figure 4 A schematic diagram of the cross-sectional structure of a fuel valve of an embodiment;

[0026] Figure 5 It is a schematic diagram of the cutaway structure of the intake valve of an embodiment;

[0027] Figure 6 A schematic diagram of the disc spring assembly structure of an embodiment;

[0028] Figure 7 A schematic diagram of the enlarged structure of the embodiment

[0029] Figure 8 Schematic diagram of the cam and connecting rod mechanism structure of the embodiment.

[0030] The meaning of each number in the figure is:

[0031] 100, air and fuel supply group; 110, pipeline connection group; 111, pipeline connection seat; 112, bellows; 113, fire check valve;

[0032] 120, fuel valve; 121, baffle; 122, rotating shaft 1; 123, cam; 124, connecting rod; 125, adjusting hole; 126, metal spring;

[0033] 130. Intake valve; 131. Upper rocker; 132. Air damper; 133. Disc spring assembly; 134. Lower rocker; 135. Second shaft; 136. Cylinder; 137. Piston; 138. Shift lever; 139. Anti-fall assembly. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For the current traditional boilers, they highly rely on various sensors for real-time monitoring of parameters such as temperature, pressure, and air-fuel ratio. However, the operating environment of boilers is usually accompanied by multiple harsh conditions such as high temperature, high humidity, strong vibration, and corrosive gases. Sensors are extremely prone to damage in high-temperature environments, resulting in the control system losing key monitoring data and being unable to trigger alarms or execute protection actions in a timely manner. Please refer to Figures 1-8 As shown, this embodiment provides an energy-saving once-through boiler based on heat transfer efficiency monitoring, including an air-fuel supply group 100. The air-fuel supply group 100 includes a pipeline connection group 110. A fuel valve 120, an intake valve 130, and a linkage mechanism are arranged on the pipeline connection group 110. A rotatable baffle 121 is arranged inside the fuel valve 120, and a cam 123 is arranged below the baffle 121. A rotary damper 132 with a lower rocker 134 is arranged inside the intake valve 130. The cam 123 and the lower rocker 134 are connected by a connecting rod 124 to form a mechanical linkage.

[0036] A pressure protection group is arranged on the intake valve 130. The pressure protection group includes a metal shrapnel 126 arranged in the fuel pipeline and a cylinder 136 communicated with the pipeline. A piston 137 in the cylinder 136 is connected to a shift lever 138 with a stop piece. The shift lever 138 and a disc spring group 133 constitute a pressure trigger mechanism. When the pipeline pressure is abnormal, the damper 132 is urgently closed through the disc spring group 133.

[0037] In addition, an anti-fall group 139 is provided to lock the position of the piston 137 in the non-working state.

[0038] During implementation, in the air-fuel supply group 100, the cam 123 inside the fuel valve 120 drives the rotatable baffle 121 to adjust the fuel flow. At the same time, the lower rocker 134 of the intake valve 130 is synchronously driven by the connecting rod 124 to control the opening of the rotary damper 132, realizing dynamic matching of the air-fuel ratio. When the fuel pipeline is over-pressured, the piston 137 moves upward along the cylinder 136, the stop piece disengages from the disc spring group 133, triggering the disc spring group 133 to instantaneously release energy and pushing the rotating shaft two 135 to complete the emergency closing action of the damper 132. The anti-fall group 139 adopts a wedge-shaped locking mechanism, which automatically snaps into the piston 137 guide groove when the boiler stops to achieve two-way mechanical locking.

[0039] See Figure 2 As shown, the main channel in the pipeline connection group 110 directly supplies the fuel output by the fuel valve 120 to the combustion chamber. The branch channel is flexibly connected to the intake valve 130 and the fire check valve 113 through a corrugated pipe 112 to block the reverse propagation of the flame, forming a closed-loop heat circulation system. The corrugated pipe 112 synchronously absorbs the vibration energy of the pipeline, and cooperates with the double-sided metal seal of the flange surface to make the fuel mix evenly, reduce the rate of backfire accidents, and improve the heat circulation efficiency.

[0040] Figure 3In the embodiment, the main channel of the pipeline connecting seat 111 directly passes through the fuel valve 120 and the combustion chamber gas pipe to ensure the stable delivery of the fuel flow; the branch channel connects the intake valve 130 and the combustion chamber air inlet with a forked structure to ensure the precise ratio of air and fuel.

[0041] See also Figure 4 As shown, a rotatable baffle 121 is provided in the valve, and its rotating shaft 122 penetrates the valve body and is externally connected to a cam 123. When the external driving force drives the rotating shaft 122 to rotate, the opening of the baffle 121 changes accordingly, directly adjusting the fuel flow; at the same time, the cam 123 at the end of the rotating shaft converts the rotational motion into linear displacement, and pushes the intake valve 130 and the damper 132 to work together through the connecting rod 124. Through the adjustment hole 125 on the surface of the connecting rod 124, the air-fuel ratio of different fuels can be adjusted to increase or decrease the air-fuel ratio. The profile of the cam 123 is specially designed so that when the opening of the baffle 121 increases by 10%, the opening of the damper 132 is synchronously expanded, and the rigidity maintains an air-fuel mass ratio of 1:1.2.

[0042] Also, see Figure 4 As shown, a metal spring 126 is provided in the main pipe on one side of the fuel valve 120. The metal spring 126 allows the air at the front end of the pipe to be premixed with the fuel and maintains a certain pressure value inside the pipe.

[0043] See also Figures 5-7 As shown, when the fuel pipeline pressure exceeds the set threshold, the piston 137 is driven by the air pressure to move upward along the cylinder 136, driving the baffle to disengage from the pre-compressed disc spring assembly 133. The surface nitrided combined disc spring sheet instantly releases the stored energy with a stiffness characteristic that is twice the rotation resistance of the damper 132, driving the second shaft 135 to rotate 135° within 0.15 seconds, and driving the damper 132 to complete a 90° emergency closing action through the fixed upper rocker 131, and synchronously cutting off the airflow channel.

[0044] The anti-fall group 139 adopts gas flow control: when the furnace is shut down, the reset spring drives the limit pin to be embedded in the guide groove of the piston 137 to limit the falling of the piston 137, thereby preventing the baffle on the connecting rod 124 from separating from the disc spring group 133; after the boiler is started, the air flow rate of the damper 132 is ≥2m / s, which pushes the swing arm to generate a torque of 12-15N·m, overcomes the spring force, and makes the pin completely withdraw from the guide groove, releasing the piston 137, so that the air pressure can push the piston 137 to move up and down in the cylinder 136, thereby detecting the pressure change in its pipeline when the device is running and responding in time.

[0045] See also Figure 8As shown, when the rotating shaft 122 of the fuel valve 120 rotates, the opening degree of the internal baffle 121 changes, synchronously driving the rotation of the end cam 123; the cam 123 transmits the rotational motion to the lower rocker 134 of the intake valve 130 through the connecting rod 124. Through the design of the geometric transmission ratio, such as the 1:1.2 ratio relationship between the lift curve of the cam 123 and the length of the rocker arm, a fixed corresponding relationship is formed between the rotation angle of the rotating shaft 135 of the air damper 132 and the fuel flow rate.

[0046] When the energy-saving once-through boiler based on heat transfer efficiency monitoring in this embodiment is in specific use, during the operation of the boiler, a rotatable baffle 121 driven by a rotating shaft 122 is provided in the fuel valve 120, and the baffle 121 drives the cam 123 to rotate: when the staff rotates the rotating shaft 122 through the handle, the rotation angle of the baffle 121 around the shaft is the same as the rotation angle of the cam 123. The cam 123 converts the rotational motion into the swing of the lower rocker 134 of the intake valve 130 through the connecting rod 124, and then drives the rotary air damper 132 to synchronously adjust the opening degree. According to Figure 8 the transmission ratio design shown, the lift curve of the cam 123 and the length of the lower rocker 134 arm adopt a 1:1.2 ratio, so that for every 1 m 3 / h increase in the fuel flow rate, the opening degree of the air damper 132 expands by 1.2 times, rigidly maintaining the air-fuel mass ratio. The adjustment hole 125 on the surface of the connecting rod 124 can adjust the air-fuel ratio of different fuels, increasing or decreasing the air-fuel ratio. This mechanical hard connection method completely avoids the defect that traditional electronic sensors are vulnerable to interference, and can still maintain the control accuracy especially under high-temperature working conditions.

[0047] The main channel adopts a direct-through design, directly conveying the fuel from the fuel valve 120 to the combustion chamber, reducing the pressure drop loss; the branch channel is flexibly connected to the intake valve 130 and the flashback arrester through the corrugated pipe 112. The axial stiffness of the corrugated pipe 112 can absorb the vibration energy of the pipeline, and at the same time its temperature resistance ensures the sealing performance under high-temperature difference environments. The flashback arrester is connected to the fuel valve 120 through a flange-type rigid interface, blocking the reverse propagation of the flame. The main and branch channels cooperate with each other, enabling the fuel to be fully mixed with air before combustion.

[0048] When there is too much air and fuel on one side of the metal shrapnel 126, it cannot pass through the metal shrapnel 126 in a large flow rate, resulting in an increase in the pressure inside the pipeline. When the pipeline pressure exceeds the set threshold, the piston 137 in the cylinder 136 is pushed to move upward along the guide groove. The movement of the piston 137 drives the shift lever 138 to move upward, so that the baffle disengages from the pre-compressed disc spring group 133, and the surface nitrided multi-layer disc spring pieces instantaneously release energy axially, pushing the second rotating shaft 135 to rotate. The upper rocker 131 fixed to the upper end of the second rotating shaft 135 converts this rotational movement into a 90° emergency closing action of the air damper 132, synchronously cutting off the fuel and air channels. At the same time, the lower rocker 134 at the lower end of the second rotating shaft 135 drives the cam 123 to rotate through the connecting rod 124, driving the baffle 121 in the fuel valve 120 to rotate, and timely cutting off the fuel supply. The stiffness of the disc spring group 133 is designed to be twice the rotational resistance of the air damper 132, ensuring that the mechanism friction resistance is preferentially overcome during energy release to avoid misoperation.

[0049] The anti-falling group 139, as a shutdown protection module, works in cooperation with a pin and spring reset mechanism. When the boiler is shut down, the limit pin automatically inserts into the guide groove of the piston 137 to limit the piston 137, completely eliminating the risk of misoperation caused by the self-weight of the piston 137; during the system restart phase, the airflow thrust in the intake passage drives the swing arm to overcome the spring resistance, causing the pin to completely withdraw from the guide groove, ensuring the restoration of the movement freedom of the piston 137. The entire system completes the full-autonomous operation from normal regulation to emergency protection without the intervention of electronic control components through the directional coupling and energy transfer of mechanical components.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving once-through boiler based on monitoring of heat transfer efficiency, comprising an air-fuel supply group (100), and the air-fuel supply group (100) includes a pipeline connection group (110), characterized in that: A fuel valve (120), an intake valve (130) and a linkage mechanism are provided on the pipeline connection group (110). A rotatable baffle (121) is provided inside the fuel valve (120). A cam (123) is provided below the baffle (121). A rotary air damper (132) with a lower rocker (134) is provided inside the intake valve (130). The cam (123) and the lower rocker (134) are connected by a connecting rod (124) to form a mechanical linkage; A pressure protection group is provided on the intake valve (130). The pressure protection group includes a metal shrapnel (126) provided in the fuel pipeline and a cylinder (136) communicated with the pipeline. A piston (137) in the cylinder (136) is connected to a rod (138) with a stop piece. The rod (138) and a disc spring group (133) constitute a pressure trigger mechanism. When the pipeline pressure is abnormal, the air damper (132) is urgently closed through the disc spring group (133); An anti-fall group (139) is additionally provided to lock the position of the piston (137) in the non-working state.

2. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 1, wherein: The pipeline connection group (110) includes a pipeline connection seat (111), a main channel and a branch channel. The pipeline connection seat (111) is communicated with the main channel. The branch channel is connected to the intake valve (130) and a fire check valve (113) through a corrugated pipe (112). The output end of the fire check valve (113) is rigidly and hermetically connected to the fuel valve (120).

3. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 2, characterized in that: The wind shield of the anti-fall group (139) is hinged to the inner wall of the air damper (132) and is linked with a bolt through a rigid connecting rod (124). When the air flow velocity in the air damper (132) > 2 m / s, the deflection angle of the wind shield > 30°, and the bolt completely disengages from the insertion hole of the cylinder (136).

4. The energy-saving once-through boiler based on monitoring of heat transfer efficiency according to claim 1, characterized in that: Three adjustment holes (125) distributed in an arithmetic progression are provided on the connecting rod (124). By replacing the adjustment holes (125), the effective length of the connecting rod (124) is adjusted, and the linkage proportionality coefficient between the baffle (121) of the fuel valve (120) and the opening degree of the air damper (132) is changed.

5. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 1, characterized in that: The axial stiffness of the disc spring group (133) is 2 times the rotational resistance of the air damper (132). The combined disc spring pieces are treated by surface nitriding.

6. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 1, characterized in that: An anti-fall group (139) is provided outside the cylinder (136), including a swing arm, a return spring and a limit bolt linked with the air damper (132); when the boiler stops firing, the spring force drives the bolt to insert into the guide groove of the piston (137) to lock its position, and during operation, the air flow in the air damper (132) pushes the swing arm to disengage the bolt.

7. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 1, characterized in that: The edge of the baffle (121) is machined with a chamfer and an expanded graphite sealing tape is embedded on the chamfered surface. When in the closed state, it forms an annular airtight interface that fits adaptively with the inner wall of the valve body.

8. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 1, characterized in that: A second rotating shaft (135) is fixedly connected to the axis of the air damper (132). An upper rocker (131) is fixedly connected to the upper end of the second rotating shaft (135). When an emergency stop occurs, the disc spring group (133) drives the upper rocker (131) to rotate.

9. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 1, characterized in that: A first rotating shaft (122) is provided in the middle of the baffle (121). A handle for driving the first rotating shaft (122) to rotate is provided above the first rotating shaft (122).

10. The energy-saving once-through boiler based on heat transfer efficiency monitoring according to claim 2, characterized in that: The branch channel is connected to the intake valve (130) through a corrugated pipe (112) to a fire check valve (113) with a built-in pressure relief port, which is rigidly connected to the housing of the fuel valve (120) in a flange manner, and a copper-nickel alloy sealing ring is provided on the flange surface.

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