High-pressure heater of 660MW primary reheating thermal power generator

Abstract

The invention relates to the technical field of heaters, in particular to a high-pressure heater of a 660MW primary reheating thermal power generator. A high-pressure heater of a 660MW one-time reheating thermal power generator comprises a cylinder body, a snakelike heat exchange tube bundle, a tube seat and two sliding supports, each sliding support comprises an outer cylinder, a telescopic assembly, an extension cylinder and an adsorption cylinder, the snakelike heat exchange tube bundle is fixed in the cylinder body through the tube seat, the cylinder body is supported on the ground through the outer cylinder, and the telescopic assembly is arranged on the outer cylinder. When any outer barrel is located at the sunken position of the ground, the corresponding telescopic assembly pushes the extension barrel out of the outer barrel to fill the sunken position till the adsorption barrel on the extension barrel makes contact with the sunken position, meanwhile, the extension barrel corresponding to the telescopic assembly in the other outer barrel also pushes the adsorption barrel to make contact with the ground, and at the moment, the barrel body can be adsorbed to the ground through the adsorption barrel; the problem that when any one of the two supports is located at the sunken position, the stability of the shell on the ground is reduced is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heaters, in particular to a high-pressure heater of a 660MW once-reheat thermal power generator. BACKGROUND

[0002] The #3 high-pressure heater is the first among the three high-pressure heaters, and the high-pressure feed water directly impacts the cooling tube bundle of the #3 high-pressure heater, and the #3 high-pressure heater is first put into operation according to the unit load, and has the largest pressure and temperature difference, and is most prone to flushing and leakage. At present, the industry has appeared the problem of frequent leakage of the #3 U-shaped tube high-pressure heater, which affects the safe and economic operation of the unit and the safety of personnel, so the serpentine header type high-pressure heater can be introduced, which has high thermal shock resistance, simple structure, and new generation manufacturing technology such as the butt welding connection mode of the heat exchange tube and the header tube seat, so that the tube bundle leakage probability is greatly reduced. This change in form can effectively solve the problem of frequent leakage of the tube bundle of the #3 high-pressure heater in a relatively harsh operating condition.

[0003] At present, the prior art (CN207635320U) discloses a serpentine tube high-pressure heater applied to a No. 0 high-pressure heater, which comprises a shell and a tube bundle, and the shell bottom is provided with a support, characterized in that the shell is composed of a barrel and shell connecting pipes on both sides of the barrel, and each shell connecting pipe is provided with a header, and one of the headers is connected with the other header through a tube bundle and a serpentine tube.

[0004] In the above manner, the shell is supported on the ground by two supports in contact with the ground, and when the ground is damaged and either of the two supports is in a recessed position, the stability of the shell on the ground is reduced, so that the heater shakes during work. SUMMARY

[0005] The present application aims to provide a high-pressure heater of a 660MW once-reheat thermal power generator, which aims to solve the problem that when either of the two supports is in a recessed position, the stability of the shell on the ground is reduced.

[0006] To achieve the above-mentioned purpose, the present application provides a high-pressure heater of a 660MW once-reheat thermal power generator, which comprises a barrel, a serpentine heat exchange tube bundle, a tube seat and two sliding supports, the tube seat fixes the serpentine heat exchange tube bundle in the barrel, and the two sliding supports are respectively arranged at the bottom of the barrel.

[0007] The sliding support comprises an outer cylinder, an extension assembly, an extension cylinder and an adsorption cylinder.

[0008] The outer cylinder is fixedly connected with the barrel body and located at the bottom of the barrel body, the telescopic assembly is arranged in the outer cylinder, the extension cylinder is slidably connected with the outer cylinder and connected with the telescopic assembly, the telescopic assembly drives the extension cylinder to slide on the outer cylinder, and the adsorption cylinder is fixedly connected with the extension cylinder and located at the bottom of the extension cylinder.

[0009] The telescopic assembly comprises a first motor, a screw rod, an adapter ring and a limiting block, the first motor is fixedly connected with the outer cylinder and located at the top of the outer cylinder, the screw rod is fixedly connected with the output end of the first motor, the adapter ring is slidably connected with the outer cylinder and threadedly matched with the screw rod, the extension cylinder is fixedly connected with the adapter ring and located at the bottom of the adapter ring, and the limiting block is fixedly connected with the screw rod and located at the side of the screw rod away from the first motor.

[0010] The adsorption cylinder comprises an outer shell, a suction fan and a valve, the outer shell is fixedly connected with the extension cylinder and located at the bottom of the extension cylinder, the suction fan is arranged in the outer shell, and the valve is arranged at one side of the outer shell.

[0011] The sliding support further comprises a mounting frame, a second motor, a rotating shaft, a connecting rod and a ball, the mounting frame is fixedly connected with the outer shell and located at the outer lateral wall of the outer shell, the second motor is fixedly connected with the mounting frame and located at the outer lateral wall of the mounting frame, the rotating shaft is rotatably connected with the mounting frame, penetrates through the mounting frame and fixedly connected with the output end of the second motor, the connecting rod is fixedly connected with the rotating shaft and located at the outer lateral wall of the rotating shaft, and the ball is embedded at the side of the connecting rod away from the rotating shaft.

[0012] The sliding support further comprises a positioning plug rod, the connecting rod is provided with a positioning hole, the mounting frame is provided with a through hole, and the positioning plug rod penetrates through the through hole and is located in the positioning hole.

[0013] The adsorption cylinder further comprises a filling pad, the filling pad is fixedly connected with the outer shell and located at the bottom of the outer shell.

[0014] The adsorption cylinder further comprises a positioning plate and a screw, the positioning plate is fixed on the ground through the screw, and the outer shell is in contact with the positioning plate.

[0015] The sliding support further comprises a storage battery and a controller, the storage battery is arranged on the outer lateral wall of the outer cylinder and electrically connected with the first motor, the second motor, the suction fan and the valve, and the controller is electrically connected with the first motor, the second motor, the suction fan and the valve.

[0016] The utility model provides a high pressure heater of 660MW once reheat thermal power generator, including barrel, serpentine heat exchange tube bundle, pipe seat and two sliding support, the pipe seat fixes serpentine heat exchange tube bundle in the barrel, two sliding support are arranged in the bottom of barrel respectively, the sliding support includes outer tube, telescopic component, extension cylinder and adsorption cylinder, when any one outer tube is in recessed position, corresponding telescopic component pushes out the extension cylinder from the outer tube and fills the recess, until the adsorption cylinder on the extension cylinder and recessed position contact, and the telescopic component in another outer tube corresponding extension cylinder also pushes the adsorption cylinder and ground contact, at this moment, the barrel can be adsorbed on the ground through the adsorption cylinder, solveed the problem that any one of two supports is in recessed position and will reduce the stability of shell on the ground. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 It is a structure schematic view of the high pressure heater of 660MW once reheat thermal power generator provided by the utility model.

[0019] Figure 2 It is Figure 1 The enlarged view of detail A.

[0020] Figure 3 It is a sectional view of the high pressure heater of 660MW once reheat thermal power generator provided by the utility model.

[0021] Figure 4 It is Figure 3 The enlarged view of detail B.

[0022] Among them: barrel 1, serpentine heat exchange tube bundle 2, pipe seat 3, sliding support 4, outer tube 5, telescopic component 6, extension cylinder 7, adsorption cylinder 8, first motor 9, screw rod 10, adapter ring 11, limit block 12, shell 13, air suction fan 14, valve 15, mounting frame 16, second motor 17, rotating shaft 18, connecting rod 19, ball 20, positioning plug 21, filling pad 22, positioning plate 23, screw 24, storage battery 25, controller 26, positioning hole 27, through hole 28. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described below in the detailed description and illustrated in the accompanying drawings by using examples, which are intended to explain the present application, and should not be understood as a limitation of the present application.

[0024] Referring to Figures 1 to 4 The present application provides a high-pressure heater of a 660 MW once-reheat thermal power generator, comprising a barrel 1, a serpentine heat exchange tube bundle 2, a tube seat 3 and two sliding supports 4, the tube seat 3 fixing the serpentine heat exchange tube bundle 2 in the barrel 1, and the two sliding supports 4 being respectively arranged at the bottom of the barrel 1.

[0025] The sliding support 4 comprises an outer barrel 5, an extension assembly 6, an extension barrel 7 and an adsorption barrel 8.

[0026] The outer barrel 5 is fixedly connected with the barrel 1 and located at the bottom of the barrel 1, the extension assembly 6 is arranged in the outer barrel 5, the extension barrel 7 is slidingly connected with the outer barrel 5 and connected with the extension assembly 6, the extension assembly 6 pushes the extension barrel 7 to slide on the outer barrel 5, and the adsorption barrel 8 is fixedly connected with the extension barrel 7 and located at the bottom of the extension barrel 7.

[0027] Specifically, by introducing the serpentine heat exchange tube bundle 2, the heat shock resistance of the serpentine heat exchange tube bundle 2 is high, the structure is simple, and the serpentine heat exchange tube bundle 2 and the tube seat 3 are connected by butt welding, and other new generation manufacturing technologies are adopted, so that the tube bundle leakage probability is greatly reduced. The change of this form can effectively solve the problem of frequent leakage of the #3 high-pressure heater tube bundle in the operation condition. The thickness of the serpentine heat exchange tube bundle 2 is reduced compared with the U-shaped tube high-pressure heater tube plate, and the serpentine heat exchange tube bundle 2 has excellent thermal elasticity and will not have the problem of fatigue cracks caused by the increase of the thickness of the tube plate. The serpentine heat exchange tube bundle 2 is formed by turning machining around the circumference of the header, which reduces the welding thermal stress. In addition, the material of the serpentine heat exchange tube bundle 2 is selected as 16Mo3, and after the header on the barrel 1 is welded, the high-pressure feed water flows along the header header tank in the axial direction, and the weld between the tube nozzle and the serpentine heat exchange tube bundle 2 is not directly washed. This structure is convenient for the formation of a protective magnetic film at the weld, and has good washing resistance. When any one of the outer barrels 5 is in a recessed position, the corresponding extension assembly 6 pushes the extension barrel 7 out of the outer barrel 5 to fill the recess, until the adsorption barrel 8 on the extension barrel 7 contacts the recessed position, while the extension assembly 6 in the other outer barrel 5 also pushes the corresponding extension barrel 7 to make the adsorption barrel 8 contact the ground. At this time, the barrel 1 can be adsorbed on the ground through the adsorption barrel 8, solving the problem that when any one of the two supports is in a recessed position, the stability of the shell on the ground is reduced.

[0028] Further, the telescopic assembly 6 comprises a first motor 9, a screw rod 10, an adapter ring 11 and a limiting block 12, the first motor 9 is fixedly connected with the outer cylinder 5 and located at the inner top of the outer cylinder 5, the screw rod 10 is fixedly connected with the output end of the first motor 9, the adapter ring 11 is slidingly connected with the outer cylinder 5 and threadedly cooperates with the screw rod 10, the extension cylinder 7 is fixedly connected with the adapter ring 11 and located at the bottom of the adapter ring 11, and the limiting block 12 is fixedly connected with the screw rod 10 and located at the side of the screw rod 10 away from the first motor 9.

[0029] Specifically, the first motor 9 drives the screw rod 10 to rotate, the screw rod 10 drives the adapter ring 11 to slide on the inner side wall of the outer cylinder 5 through thread cooperation, and the adapter ring 11 drives the extension cylinder 7 to slide out of the outer cylinder 5 when sliding, fills the ground depression and increases the stability of the cylinder body 1 on the ground. The limiting block 12 is located at the side of the screw rod 10 away from the first motor 9, which can avoid the adapter ring 11 from falling off the screw rod 10.

[0030] Further, the adsorption cylinder 8 comprises an outer shell 13, a suction fan 14 and a valve 15, the outer shell 13 is fixedly connected with the extension cylinder 7 and located at the bottom of the extension cylinder 7, the suction fan 14 is arranged in the outer shell 13, and the valve 15 is arranged at one side of the outer shell 13.

[0031] Specifically, the extension cylinder 7 pushes the outer shell 13 to contact the ground after sliding out of the outer cylinder 5, at this time, the valve 15 is in an open state, the suction fan 14 draws the air in the outer shell 13 out of the open valve 15, so that the outer shell 13 is in a negative pressure state and is adsorbed on the ground, then the valve 15 is closed and the suction fan 14 stops working, at this time, the outer shell 13 can be continuously adsorbed on the ground.

[0032] Further, the sliding support 4 further comprises a mounting frame 16, a second motor 17, a rotating shaft 18, a connecting rod 19 and a ball 20, the mounting frame 16 is fixedly connected with the outer shell 13 and located at the outer side wall of the outer shell 13, the second motor 17 is fixedly connected with the mounting frame 16 and located at the outer side wall of the mounting frame 16, the rotating shaft 18 is rotatably connected with the mounting frame 16 and fixedly connected with the output end of the second motor 17 and penetrates through the mounting frame 16, the connecting rod 19 is fixedly connected with the rotating shaft 18 and located at the outer side wall of the rotating shaft 18, and the ball 20 is embedded at the side of the connecting rod 19 away from the rotating shaft 18.

[0033] Specifically, the ball 20 is greater than half the volume embedded in the connecting rod 19, so that the ball 20 can be universal rotation on the connecting rod 19, and will not fall from the connecting rod 19, the length of the connecting rod 19 is greater than the length of the extension cylinder 7, so that the extension cylinder 7 is stretched to the longest, the connecting rod 19 can still rotate to contact the ground. When the extension cylinder 7 is still not filled in the recess position when stretched to the longest, the position of the cylinder body 1 can be adjusted at this time, the second motor 17 on the mounting frame 16 drives the rotating shaft 18 to rotate, the rotating shaft 18 drives the connecting rod 19 to rotate to one side of the ground, and is in contact with the ground through the ball 20, until the connecting rod 19 is rotated to be perpendicular to the ground, at this time the position of the cylinder body 1 can be adjusted through the ball 20, specifically, the cylinder body 1 is pushed, so that the cylinder body 1 moves to the stress direction through the ball 20, and the cylinder body 1 is transported to a relatively flat bottom surface, then the second motor 17 is reversely rotated, so that the rotating shaft 18 drives the connecting rod 19 to rotate away from the ground, so that the outer cylinder 5 supports the cylinder body 1, at this time the two outer cylinders 5 still do not contact the bottom at different heights, the first motor 9 in the outer cylinder 5 corresponding to the recess position drives the screw rod 10 to rotate, the screw rod 10 drives the adapter ring 11 to slide downward on the inner side wall of the outer cylinder 5 through thread cooperation, the adapter ring 11 drives the extension cylinder 7 to slide out of the outer cylinder 5 when sliding, filling the recess of the ground, finally the air in the shell 13 is sucked out of the opened valve 15 by the air suction fan 14, so that the shell 13 is in a negative pressure state and is adsorbed on the ground, then the valve 15 is closed and the air suction fan 14 stops working, at this time the shell 13 can be continuously adsorbed on the ground.

[0034] The rotating shaft 18 comprises a shaft body and a connecting seat, the shaft body is rotatably connected with the mounting frame 16 and fixedly connected with the output end of the second motor 17 penetrating the mounting frame 16, and the connecting seat is fixedly connected with the shaft body and located on the outer side wall of the shaft body. The connecting rod 19 and the ball 20 are two or more, the connecting rod 19 is fixedly connected with the connecting seat and located on the outer side wall of the connecting seat. The second motor 17 drives the shaft body to rotate, the shaft body drives the connecting seat to rotate, and the connecting seat drives the connecting rod 19 to rotate to one side of the ground.

[0035] Further, the sliding support 4 further comprises a positioning plug rod 21, the connecting rod 19 has a positioning hole 27, and the mounting frame 16 specifically has a through hole 28, and the positioning plug rod 21 penetrates the through hole 28 and is located in the positioning hole 27.

[0036] Specifically, when the barrel body 1 is adjusted in position by the balls 20 on the connecting rod 19, the positioning rod 21 is inserted through the through hole 28 into the positioning hole 27 on the connecting rod 19, so that external force generated during movement is not applied to the rotating shaft 18, and damage to the connecting end of the rotating shaft 18 and the second motor 17 is avoided.

[0037] Further, the adsorption cylinder 8 further comprises a filling pad 22, which is fixedly connected with the shell 13 and located at the bottom of the shell 13.

[0038] Specifically, the filling pad 22 can fill the gap between the shell 13 and the ground, thereby increasing the stability of the shell 13 adsorbed on the ground. The filling pad 22 is made of the following raw materials in the weight fraction: base oil 2-28 parts, dimethyl maleate 1-12 parts, alkyl polyglucoside 2-15 parts, Hawaiian drupe oil 1-13 parts, sodium formate 1-9 parts, carboxymethyl chitosan 4-14 parts, polyvinylpyridine 0.28-8 parts, nano-tetrairon microspheres 1-14 parts, polyvinyl acetate 2-12 parts, silica powder 2-16 parts, beeswax matrix 1-13 parts, plant extract oil 2-16 parts, butyl rubber 2-27 parts, modified butyl acrylate 4-1 part, modified organosilicon phenolic epoxy resin 1-14 parts, high-pressure low-density PE 1-25 parts, graphene 1-13 parts, polyamide fiber 1-13 parts, and polytetrafluoroethylene 3-18 parts. The filling pad 22 is high-pressure, high-temperature-resistant, low-temperature-resistant, corrosion-resistant, and less prone to breaking, has long service life, and is suitable for the preparation of sealing rings. The material is selected from high-pressure PE and graphite, thereby increasing the toughness and tensile degree of the material.

[0039] Further, the adsorption cylinder 8 further comprises a positioning plate 23 and a screw 24, the positioning plate 23 is fixed to the ground by the screw 24, and the shell 13 is in contact with the positioning plate 23.

[0040] Specifically, when the ground is rough, the positioning plate 23 can be fixed to the ground by the screw 24, and then the shell 13 is adsorbed on the positioning plate 23, thereby increasing the stability of the shell 13 adsorbed on the ground.

[0041] In addition, the positioning plate 23 comprises a steel plate, a heat insulation layer, a waterproof layer, and a rubber layer from top to bottom. The surface of the steel plate is smooth and can be adsorbed. The heat insulation layer can prevent the ground heat from being transmitted to the air suction fan 14 through the steel plate, causing the temperature of the air suction fan 14 to be too high. The waterproof layer can prevent the ground water from wetting and corroding the heat insulation layer. The rubber layer avoids the uneven ground from causing the steel plate to shake.

[0042] Further, the sliding support 4 further comprises a battery 25 and a controller 26, the battery 25 is arranged on the outer wall of the outer cylinder 5 and is electrically connected with the first motor 9, the second motor 17, the air suction fan 14 and the valve 15, the controller 26 is electrically connected with the first motor 9, the second motor 17, the air suction fan 14 and the valve 15.

[0043] Specifically, the battery 25 supplies power for the first motor 9, the second motor 17, the air suction fan 14 and the valve 15, and the controller 26 controls the working state of the first motor 9, the second motor 17, the air suction fan 14 and the valve 15. In addition, the air suction fan 14 is provided with a filter screen at the bottom to avoid the impurities on the ground from damaging the air suction fan 14 and the valve 15.

[0044] The high-pressure heater of a 660MW once-reheat thermal power generator of the present application has high heat shock resistance, simple structure, and the like by introducing the serpentine heat exchange tube bundle 2, and a new generation of manufacturing technology such as the butt welding connection mode of the serpentine heat exchange tube bundle 2 and the tube seat 3, so that the tube bundle leakage probability is greatly reduced. This form of change can effectively solve the problem of frequent leakage of the #3 high-pressure heater tube bundle in the relatively harsh operating condition. The thickness of the serpentine heat exchange tube bundle 2 is reduced compared with the U-shaped tube high-pressure heater tube plate, and has excellent thermal elasticity, and will not have the problem of fatigue cracks due to the increase in the thickness of the tube plate. The serpentine heat exchange tube bundle 2 is machined in the circumferential direction of the header, which reduces the welding thermal stress. In addition, the material of the serpentine heat exchange tube bundle 2 is selected to be 16Mo3, and after the header on the barrel body 1 is welded, the high-pressure feed water flows along the header header tank in the axial direction, and does not directly wash the weld between the nozzle and the serpentine heat exchange tube bundle 2. The structure is convenient for the formation of a protective magnetic film at the weld, and has good erosion resistance. When any one of the outer barrels 5 is in a recessed position, such as when the recessed position is greater than the extended position of the extension barrel 7, the position of the barrel body 1 can be adjusted. The second motor 17 on the mounting frame 16 drives the rotating shaft 18 to rotate, the rotating shaft 18 drives the connecting rod 19 to rotate to one side of the ground, and the connecting rod 19 is in contact with the ground through the ball 20, until the connecting rod 19 rotates to be perpendicular to the ground. At this time, the position of the barrel body 1 can be adjusted through the ball 20, and the barrel body 1 is transported to a relatively flat bottom surface. Subsequently, the second motor 17 is reversely rotated, so that the rotating shaft 18 drives the connecting rod 19 to rotate away from the ground, so that the outer barrel 5 supports the barrel body 1. At this time, the heights of the bottoms contacted by the two outer barrels 5 are still inconsistent, and the first motor 9 corresponding to the recessed position drives the screw rod 10 to rotate. The screw rod 10 drives the adapter ring 11 to slide on the inner wall of the outer barrel 5 through thread cooperation. The adapter ring 11 drives the extension barrel 7 to slide out of the outer barrel 5 when sliding, and fills the recess of the ground. Finally, the air in the outer shell 13 is sucked out of the open valve 15 by the air suction fan 14, so that the outer shell 13 is in a negative pressure state and is adsorbed on the ground. Then the valve 15 is closed, and the air suction fan 14 stops working. At this time, the outer shell 13 can be continuously adsorbed on the ground, and the filling pad 22 can fill the gap between the outer shell 13 and the ground, thereby increasing the stability of the outer shell 13 adsorbed on the ground. When the ground is relatively rough, the positioning plate 23 can be fixed to the ground through the screw 24, and then the outer shell 13 is adsorbed on the positioning plate 23, thereby increasing the stability of the outer shell 13 adsorbed on the ground, and solving the problem that when any one of the two supports is in a recessed position, the stability of the shell on the ground is reduced.

[0045] The above only discloses a preferred embodiment of the high-pressure heater of the 660MW once-reheated thermal power generator, and of course cannot limit the scope of the present application. Those skilled in the art can understand that all or part of the processes of the above embodiment can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope of the present application.

Claims

1. A high-pressure heater of a 660MW once-through reheat thermal power generator, comprising a barrel, a serpentine heat exchange tube bundle and a tube seat, the tube seat fixing the serpentine heat exchange tube bundle in the barrel, characterized in that: two sliding supports are further included, and the two sliding supports are respectively arranged at the bottom of the barrel; the sliding support comprises an outer barrel, an extension assembly, an extension barrel and an adsorption barrel; the outer barrel is fixedly connected with the barrel and located at the bottom of the barrel, the extension assembly is arranged in the outer barrel, the extension barrel is slidingly connected with the outer barrel and connected with the extension assembly, the extension assembly pushes the extension barrel to slide on the outer barrel, and the adsorption barrel is fixedly connected with the extension barrel and located at the bottom of the extension barrel.

2. The high-pressure heater of the 660MW once-through reheat thermal power generator according to claim 1, characterized in that: the extension assembly comprises a first motor, a screw rod, an adapter ring and a limiting block, the first motor is fixedly connected with the outer barrel and located at the top of the outer barrel, the screw rod is fixedly connected with the output end of the first motor, the adapter ring is slidingly connected with the outer barrel and threadedly matched with the screw rod, the extension barrel is fixedly connected with the adapter ring and located at the bottom of the adapter ring, and the limiting block is fixedly connected with the screw rod and located at the side of the screw rod away from the first motor.

3. The high-pressure heater of the 660MW once-through reheat thermal power generator according to claim 2, characterized in that: the adsorption barrel comprises an outer shell, a suction fan and a valve, the outer shell is fixedly connected with the extension barrel and located at the bottom of the extension barrel, the suction fan is arranged in the outer shell, and the valve is arranged at one side of the outer shell.

4. The high-pressure heater of the 660MW once-through reheat thermal power generator according to claim 3, characterized in that: the sliding support further comprises a mounting frame, a second motor, a rotating shaft, a connecting rod and a ball, the mounting frame is fixedly connected with the outer shell and located at the outer lateral wall of the outer shell, the second motor is fixedly connected with the mounting frame and located at the outer lateral wall of the mounting frame, the rotating shaft is rotatably connected with the mounting frame and fixedly connected with the output end of the second motor and penetrates through the mounting frame, the connecting rod is fixedly connected with the rotating shaft and located at the outer lateral wall of the rotating shaft, and the ball is embedded at the side of the connecting rod away from the rotating shaft.

5. The high-pressure heater of the 660MW once-through reheat thermal power generator according to claim 4, characterized in that: the sliding support further comprises a positioning plug, the connecting rod has a positioning hole, the mounting frame has a through hole, and the positioning plug penetrates through the through hole and is located in the positioning hole.

6. The high-pressure heater of the 660MW once-through reheat thermal power generator according to claim 3, characterized in that: the adsorption barrel further comprises a filling pad, and the filling pad is fixedly connected with the outer shell and located at the bottom of the outer shell.

7. The high-pressure heater of the 660MW once-through reheat thermal power generator according to claim 3, characterized in that: the adsorption barrel further comprises a positioning plate and a screw, the positioning plate is fixed to the ground by the screw, and the outer shell is in contact with the positioning plate. ​ 8. The high-pressure heater of a 660 MW once-through reheat thermal power generator according to claim 4, characterized in that: The sliding support further comprises a battery and a controller, the battery is arranged on the outer wall of the outer cylinder and is electrically connected with the first motor, the second motor, the induced draft fan and the valve, and the controller is electrically connected with the first motor, the second motor, the induced draft fan and the valve.

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