Anti-deformation device for hoisting of power plant p-type furnace screen superheater

Abstract

The utility model discloses a kind of thermal power type furnace screen type superheater hoisting anti-deformation devices, comprising: frame, support plate and multiple limiting mechanisms, accommodating cavity is formed in frame, the top of frame is equipped with hanging ring, support plate is located in accommodating cavity and is connected with frame, support plate is used to support thermal power type furnace screen type superheater, multiple spaced distribution through holes are formed on support plate, through hole penetrates support plate along up-down direction, the number of limiting mechanism is same with the number of through hole and respectively one-to-one correspondence, limiting mechanism includes slide rod, the slide rod of each limiting mechanism is along up-down direction and is arranged in through hole and relative to support plate along up-down direction movable.According to the thermal power type furnace screen type superheater hoisting anti-deformation device of the utility model embodiment, the deformation condition of furnace screen type superheater can be reduced, the service life of furnace screen type superheater is helped to promote, it is easy to operate, hoisting efficiency can be improved;And, can be applicable to different size size's furnace screen type superheater.

Description

Technical Field

[0001] This utility model relates to the field of hoisting, and in particular to a hoisting anti-deformation device for a thermal power plant Π-type furnace screen superheater. Background Technology

[0002] Furnace screen superheaters are typically hoisted at the top of the furnace or at the furnace outlet flue. In related technologies, when hoisting furnace screen superheaters, steel wire ropes are usually used to bind the tube panels together. The wire ropes are then looped around a hook, and a crane is used to lift the superheater to the designated position. The binding operation is cumbersome and time-consuming, resulting in low hoisting efficiency. Furthermore, the steel wire ropes wrapped around the outer circumference of the superheater exert a tangential force towards the center, which can cause bending and deformation of the superheater. This could lead to permanent equipment defects due to deformation of some tube panels, severely affecting the normal operation and service life of the equipment. Therefore, improvements are needed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a hoisting anti-deformation device for a Π-type furnace screen superheater in thermal power plants. This device can reduce deformation of the furnace screen superheater, help extend its service life, is easy to operate, and improves hoisting efficiency. Furthermore, it is applicable to furnace screen superheaters of different sizes, and can more effectively limit the movement of the furnace screen superheater during hoisting.

[0004] According to an embodiment of the present invention, a hoisting anti-deformation device for a thermal power plant Π-type furnace screen superheater includes: a frame with a receiving cavity formed inside, and a plurality of hanging rings arranged at intervals along the circumference of the frame; a support plate disposed in the receiving cavity and connected to the frame, the support plate being used to support the thermal power plant Π-type furnace screen superheater, the support plate having a plurality of spaced through holes that penetrate the support plate in the vertical direction; and a plurality of limiting mechanisms, the number of the limiting mechanisms being the same as the number of the through holes and corresponding one-to-one, each limiting mechanism including a sliding rod, the sliding rod of each limiting mechanism passing through the through hole in the vertical direction and movable relative to the support plate in the vertical direction.

[0005] According to the embodiment of this utility model, the anti-deformation device for hoisting a Π-type furnace screen superheater in thermal power plants, compared with the limiting method of binding the furnace screen superheater with ropes in related technologies, allows the limiting mechanism to limit the furnace screen superheater, which can reduce the deformation of the furnace screen superheater and help to extend its service life. When hoisting the furnace screen superheater, it is only necessary to place it on the anti-deformation device before hoisting, eliminating the need for binding with ropes as in related technologies. This simplifies operation and improves efficiency. Lifting efficiency: By incorporating multiple limiting structures, and with the sliding rods of the limiting mechanism capable of moving vertically, when the furnace screen superheater is placed on the top surface of the sliding rods, part of the sliding rods are subjected to pressure and move downwards, while the other part of the sliding rods are not subjected to pressure from the furnace screen superheater, maintaining an upward protrusion relative to the support plate and acting as a limiter for the furnace screen superheater. This allows the anti-deformation device for lifting Ώ-type furnace screen superheaters in thermal power plants to be applicable to furnace screen superheaters of different sizes, and allows for more thorough limitation of the furnace screen superheater during lifting.

[0006] According to some embodiments of the present invention, a plurality of through holes are arranged in an array on the support plate; and / or, the support plate includes a plurality of sub-support plates, the sub-support plates being strip-shaped, the plurality of sub-support plates being arranged at intervals along the width direction of the sub-support plates, and each sub-support plate being fixedly connected to the frame on both sides along the length direction; each sub-support plate is provided with a plurality of through holes, and the plurality of through holes on a single sub-support plate are arranged at intervals along the length direction of the sub-support plate.

[0007] According to some embodiments of the present invention, a slip ring is also included, the slip ring being connected to the inner peripheral wall of the through hole, the slip ring having a vertically penetrating sliding hole, and the sliding rod passing through the sliding hole in the vertical direction.

[0008] According to some embodiments of the present invention, the slide bar includes a rod body, a first limiting protrusion and a second limiting protrusion. The first limiting protrusion is disposed at the upper end of the rod body and located on the outer periphery of the rod body. The first limiting protrusion is located above the support plate. The second limiting protrusion is disposed at the lower end of the rod body and located on the outer periphery of the rod body. The second limiting protrusion is located below the support plate.

[0009] According to some embodiments of the present invention, the limiting mechanism includes an elastic element, which is connected to the lower end of the slide rod and located below the support plate. The upper end of the elastic element is connected to the lower end of the slide rod, and the lower end of the elastic element is connected to the support plate or the frame. The elastic element can undergo elastic deformation in the vertical direction.

[0010] According to some embodiments of the present invention, a protective cylinder is also included. The protective cylinder is disposed below the support plate and connected to the support plate. The protective cylinder has an installation cavity, and the elastic element is accommodated in the installation cavity. The lower end of the elastic element is connected to the bottom of the protective cylinder.

[0011] According to some embodiments of this utility model, it further includes a guide rod, which is disposed in the mounting cavity and extends in the vertical direction. The elastic element is a spring and is sleeved on the outer periphery of the guide rod. The lower end of the elastic element is connected to the bottom of the protective cylinder. A guide channel extending in the vertical direction is formed in the slide rod. The guide channel passes through the slide rod in the vertical direction. The upper end of the guide rod extends into the guide channel and slides with the guide channel.

[0012] According to some embodiments of the present invention, a vent hole is formed on the protective cylinder, and the vent hole connects the mounting cavity with the outside air.

[0013] According to some embodiments of the present invention, the slide bar includes a rod body and a second limiting protrusion. The second limiting protrusion is located on the outer periphery of the rod body and is disposed at the lower end of the rod body. The second limiting protrusion is located below the support plate. The second limiting protrusion contacts the inner wall of the protective cylinder, and the vent hole is formed at the bottom of the protective cylinder.

[0014] According to some embodiments of this utility model, the support plate includes multiple sub-support plates, each sub-support plate being strip-shaped. The multiple sub-support plates are spaced apart along the width direction of the sub-support plate, and each sub-support plate is fixedly connected to the frame on both sides along its length direction. Each sub-support plate has multiple through holes, which are spaced apart along the length direction of the sub-support plate. The number of protective cylinders is the same as the number of sub-support plates and corresponds one-to-one. The protective cylinder extends along the length direction of the sub-support plate. Each protective cylinder includes a cylinder body and multiple bottom covers. The cylinder body is connected to the sub-support plate, and the bottom of the cylinder body has multiple bottom holes. The number of bottom covers is the same as the number of bottom holes and corresponds one-to-one. Each bottom cover is threaded to a corresponding bottom hole. The number of bottom holes in each protective cylinder is the same as the number of through holes on the corresponding sub-support plate and corresponds one-to-one.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view of the anti-deformation device for hoisting a Π-type furnace screen superheater in thermal power plants according to some embodiments of this utility model; Figure 2 yes Figure 1 Cross-sectional view of the anti-deformation device for hoisting the screen-type superheater of a thermal power plant's Ώ-type furnace. Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 yes Figure 1 Another cross-sectional view of the anti-deformation device for the hoisting of the π-type superheater in a thermal power plant.

[0017] Figure label: 100. Anti-deformation device for hoisting the screen-type superheater of a thermal power plant π-type furnace; 1. Frame; 11. Receiving cavity; 12. Hanging ring; 13. Support; 2. Support plate; 21. Sub-support plate; 211. Through hole; 22. Slip ring; 23. Sliding hole; 3. Limiting mechanism; 31. Slide rod; 311. Rod body; 3111. Guide channel; 312. First limiting protrusion; 313. Second limiting protrusion; 32. Elastic element; 4. Protective cylinder; 41. Mounting cavity; 42. Guide rod; 43. Vent hole; 44. Cylinder body; 441. Bottom hole; 45. Bottom cover. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] The following is for reference. Figures 1-4 Description of the anti-deformation device 100 for hoisting a Ώ-type furnace screen superheater in thermal power plants according to an embodiment of the present utility model.

[0020] Reference Figures 1-4 According to an embodiment of the present utility model, the anti-deformation device 100 for hoisting a Π-type furnace screen superheater of a thermal power plant includes: a frame 1, a support plate 2, and multiple limiting mechanisms 3.

[0021] The frame 1 has a receiving cavity 11, and the top of the frame 1 is provided with multiple hanging rings 12, which are arranged at intervals along the circumference of the frame 1.

[0022] The support plate 2 is located inside the receiving cavity 11 and connected to the frame 1. The support plate 2 is used to support the thermal power Π-type furnace screen superheater. Multiple through holes 211 are formed on the support plate 2 at intervals. The through holes 211 penetrate the support plate 2 in the vertical direction.

[0023] The number of limiting mechanisms 3 is the same as the number of through holes 211 and they correspond one-to-one. Each limiting mechanism 3 includes a slide rod 31. The slide rod 31 of each limiting mechanism 3 passes through the through hole 211 in the vertical direction and is movable relative to the support plate 2 in the vertical direction.

[0024] For example, the anti-deformation device 100 for the hoisting of the Π-type furnace screen superheater of thermal power includes a support 13. The support 13 is located at the lower part of the frame 1 and is connected to the frame 1. When the anti-deformation device 100 for the hoisting of the Π-type furnace screen superheater of thermal power is placed on the ground, the support 13 can be in contact with the ground to keep the anti-deformation device 100 for the hoisting of the Π-type furnace screen superheater of thermal power stable.

[0025] For example, the slide bar 31 has a first state and a second state. In the first state, the top of the slide bar 31 is farthest from the support plate 2. At this time, the slide bar 31 protrudes upward relative to the support plate 2 and can limit the furnace screen type superheater. In the second state, the top of the slide bar 31 is closest to the support plate 2. At this time, the slide bar 31 cannot limit the furnace screen type superheater.

[0026] For example, a motor can be used to switch the slider 31 between the first state and the second state; another example is that the slider 31 can be connected to the elastic element 32 so that the slider 31 can move elastically between the first state and the second state.

[0027] For example, when hoisting a furnace screen superheater, first place the furnace screen superheater on top of slide bar 31, then continue moving the furnace screen superheater downwards until the bottom of the furnace screen superheater contacts the top of part of slide bar 31, causing part of slide bar 31 to move downwards until the furnace screen superheater is placed on top of support plate 2. The part of slide bar 31 subjected to the downward pressure of the furnace screen superheater moves from the first state to the second state; the other part of slide bar 31, not subjected to the downward pressure of the furnace screen superheater, remains in the first state and limits the movement of the furnace screen superheater.

[0028] The lifting device can lift the anti-deformation device 100 of the thermal power plant Π-type furnace screen superheater by connecting with the hanging ring 12. By providing multiple hanging rings 12 on the top of the frame 1 and arranging the multiple hanging rings 12 at intervals along the circumference of the frame 1, the support plate 2 can provide vertical upward support for the furnace screen superheater and prevent the support plate 2 from tilting.

[0029] Because the slide bar 31, which is under pressure from the furnace screen superheater, moves downward under pressure, while the slide bar 31, which is not under pressure from the furnace screen superheater, can limit the furnace screen superheater, this allows for a more complete match with the shape and placement of the furnace screen superheater. This also allows for more effective limiting of the furnace screen superheater during hoisting. Furthermore, the limiting mechanism 3 is more evenly distributed around the furnace screen superheater, resulting in more uniform limiting and reducing deformation of the furnace screen superheater, thus helping to extend its service life.

[0030] According to the embodiment of this utility model, the anti-deformation device 100 for hoisting a Π-type furnace screen superheater in thermal power plants, compared with the limiting method of binding the furnace screen superheater with ropes in related technologies, allows the limiting mechanism 3 to limit the furnace screen superheater, which can reduce the deformation of the furnace screen superheater and help to extend its service life. When hoisting the furnace screen superheater, it is only necessary to place the furnace screen superheater on the anti-deformation device 100 before hoisting, eliminating the need for binding the furnace screen superheater with ropes in related technologies. This simplifies the operation and improves hoisting efficiency. The rate; by including multiple limiting structures, and the sliding rod 31 of the limiting mechanism 3 can move in the vertical direction, when the furnace screen superheater is placed on the top surface of the sliding rod 31, part of the sliding rod 31 is subjected to pressure and moves downward, while the other part of the sliding rod 31 is not subjected to pressure from the furnace screen superheater, and remains convex upward relative to the support plate 2 and plays a limiting role for the furnace screen superheater. In this way, the anti-deformation device 100 for hoisting the thermal power plant Ώ-type furnace screen superheater can be applied to furnace screen superheaters of different sizes, and the furnace screen superheater can be more fully limited when hoisting it.

[0031] Reference Figure 2 and Figure 4 According to some embodiments of this utility model, multiple through holes 211 are arranged in an array on the support plate 2. By arranging multiple through holes 211 in an array on the support plate 2, the arrangement of the through holes 211 can be made more uniform, the arrangement of the limiting mechanism 3 can be made more uniform, and the limiting mechanism 3 can more fully match the shape and placement position of the furnace screen superheater, and can more fully limit the furnace screen superheater when hoisting it.

[0032] Reference Figure 2According to some embodiments of this utility model, the support plate 2 includes multiple sub-support plates 21, each sub-support plate 21 being strip-shaped. The multiple sub-support plates 21 are spaced apart along their width direction, and each sub-support plate 21 is fixedly connected to the frame 1 on both sides along its length direction. Each sub-support plate 21 has multiple through holes 211 formed on it, and these through holes 211 are spaced apart along the length direction of the sub-support plate 21. By including multiple sub-support plates 21 in the support plate 2 and arranging them spaced apart along their width direction, the manufacturing and transportation of the sub-support plates 21 are more convenient, and it is easier to connect and install the sub-support plates 21 to the frame 1. By forming multiple through holes 211 on each sub-support plate 21 and arranging the multiple through holes 211 on a single sub-support plate 21 at intervals along the length of the sub-support plate 21, the arrangement of the through holes 211 can be made more uniform, the arrangement of the limiting mechanism 3 can be made more uniform, the limiting mechanism 3 can better match the shape and placement of the furnace screen superheater, and can better limit the furnace screen superheater when hoisting it.

[0033] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, the anti-deformation device 100 for hoisting a Π-type superheater in a thermal power plant further includes a slip ring 22. The slip ring 22 is connected to the inner peripheral wall of the through hole 211, and a vertically penetrating sliding hole 23 is formed inside the slip ring 22. The sliding rod 31 passes through the sliding hole 23 in the vertical direction. By connecting the slip ring 22 to the inner peripheral wall of the through hole 211 and forming a vertically penetrating sliding hole 23 inside the slip ring 22, and having the sliding rod 31 pass through the sliding hole 23 in the vertical direction, the friction between the sliding rod 31 and the sliding hole 23 can be reduced, preventing excessive friction on the sliding rod 31 from interfering with its sliding.

[0034] Reference Figure 2 and Figure 3 According to some embodiments of the present invention, the slide bar 31 includes a rod body 311, a first limiting protrusion 312 and a second limiting protrusion 313. The first limiting protrusion 312 is disposed at the upper end of the rod body 311 and located on the outer periphery of the rod body 311. The first limiting protrusion 312 is located above the support plate 2. The second limiting protrusion 313 is disposed at the lower end of the rod body 311 and located on the outer periphery of the rod body 311. The second limiting protrusion 313 is located below the support plate 2.

[0035] For example, the slide bar 31 has a first state and a second state. When the slide bar 31 is in the first state, the second limiting protrusion 313 abuts against the support plate 2 in the vertical direction; when the slide bar 31 is in the second state, the first limiting protrusion 312 abuts against the support plate 2 in the vertical direction.

[0036] By placing the first limiting protrusion 312 at the upper end of the rod 311 and positioning it above the support plate 2, the support plate 2 can limit the first limiting protrusion 312, preventing the slide rod 31 from moving excessively downwards and causing it to disengage from the through hole 211, thus preventing the limiting function of the slide rod 31 from failing. By placing the second limiting protrusion 313 at the lower end of the rod 311 and positioning it below the support plate 2, the support plate 2 can limit the second limiting protrusion 313, preventing the slide rod 31 from moving excessively upwards and causing it to disengage from the through hole 211, thus preventing the limiting function of the slide rod 31 from failing.

[0037] Reference Figure 2 and Figure 3 According to some embodiments of the present invention, the limiting mechanism 3 includes an elastic element 32, which is connected to the lower end of the slide rod 31 and located below the support plate 2. The upper end of the elastic element 32 is connected to the lower end of the slide rod 31, and the lower end of the elastic element 32 is connected to the support plate 2 or the frame 1. The elastic element 32 can undergo elastic deformation in the vertical direction.

[0038] For example, the lower end of the elastic element 32 can be directly connected to the support plate 2 or the frame 1; or other components can be connected to the support plate 2 or the frame 1, and then the lower end of the elastic element 32 can be connected to other components, so that the elastic element 32 is indirectly connected to the support plate 2 or the frame 1.

[0039] By including an elastic element 32 in the limiting mechanism 3, and connecting the upper end of the elastic element 32 to the lower end of the slide rod 31, and connecting the lower end of the elastic element 32 to the support plate 2 or the frame 1, the elastic element 32 can apply an upward supporting force to the slide rod 31, which can cause the slide rod 31 to move upward.

[0040] When the slide bar 31 is not subjected to pressure from the furnace screen superheater, it can remain in a state of being convex upward relative to the support plate 2, preventing the slide bar 31 from falling due to its own weight, so that the slide bar 31 can play a sufficient limiting role for the furnace screen superheater.

[0041] Furthermore, when the furnace screen superheater is removed from the thermal power plant ∏-type furnace screen superheater hoisting anti-deformation device 100, the elastic element 32 causes the sliding rod 31 to move upward under the action of elasticity, and can be continuously maintained in a state of upward protrusion relative to the support plate 2. When other shaped furnace screen superheaters are placed on the thermal power plant ∏-type furnace screen superheater hoisting anti-deformation device 100 or when the furnace screen superheater is placed in other positions on the thermal power plant ∏-type furnace screen superheater hoisting anti-deformation device 100, the elastic element 32 can limit the furnace screen superheater.

[0042] Reference Figures 2-4According to some embodiments of this utility model, the anti-deformation device 100 for lifting the furnace screen superheater from the thermal power plant Π-type furnace screen superheater also includes a protective cylinder 4. The protective cylinder 4 is located below and connected to the support plate 2. The protective cylinder 4 has an installation cavity 41, and the elastic element 32 is accommodated in the installation cavity 41. The lower end of the elastic element 32 is connected to the bottom of the protective cylinder 4. By including the protective cylinder 4 in the anti-deformation device 100 for lifting the furnace screen superheater from the thermal power plant Π-type furnace screen superheater, and accommodating the elastic element 32 in the installation cavity 41, the protective cylinder 4 can protect the elastic element 32 and the sliding rod 31, preventing the sliding rod 31 from colliding with other objects below the support plate 2 and causing damage after moving downward under the pressure of the furnace screen superheater. By connecting the lower end of the elastic element 32 to the bottom of the protective cylinder 4, the protective cylinder 4 can fix the position of the bottom of the elastic element 32, making the fixed connection of the elastic element 32 more complete and convenient.

[0043] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, the anti-deformation device 100 for hoisting the furnace screen superheater from the thermal power plant Π-type furnace screen superheater also includes a guide rod 42. The guide rod 42 is disposed in the mounting cavity 41 and extends in the vertical direction. The elastic element 32 is a spring and is sleeved on the outer periphery of the guide rod 42. The lower end of the elastic element 32 is connected to the bottom of the protective cylinder 4. A guide channel 3111 extending in the vertical direction is formed in the sliding rod 31. The guide channel 3111 passes through the sliding rod 31 in the vertical direction. The upper end of the guide rod 42 extends into the guide channel 3111 and slides with the guide channel 3111.

[0044] By making the elastic element 32 a spring and sleeved on the outer periphery of the guide rod 42, the position of the spring can be fixed, making the fixed connection of the spring more sufficient, and preventing the spring from moving around in the mounting cavity 41, which would cause the direction of the elastic force of the spring on the guide rod 42 to deviate. By forming a guide channel 3111 extending in the vertical direction in the slide rod 31, the upper end of the guide rod 42 extends into the guide channel 3111 and slides with the guide channel 3111. The cooperation between the guide channel 3111 and the guide rod 42 allows the slide rod 31 to move vertically upward or downward relative to the support plate 2, preventing the slide rod 31 from deviating in the direction of movement and getting stuck in the through hole 211.

[0045] Reference Figure 3According to some embodiments of this utility model, a vent hole 43 is formed on the protective cylinder 4, which connects the mounting cavity 41 with the outside air. When the furnace screen superheater is placed on the support plate 2, the bottom of the furnace screen superheater contacts part of the sliding rod 31, causing part of the sliding rod 31 to move downward. During the downward movement of this part of the sliding rod 31, which is subjected to the downward pressure of the furnace screen superheater, the air inside the protective cylinder 4 will be compressed, which may cause the sliding rod 31 to be difficult to move downward due to the effect of this air. By forming a vent hole 43 on the protective cylinder 4 and connecting the vent hole 43 with the outside air, air can be discharged from the mounting cavity 41 to the outside air through the vent hole 43 during the downward movement of the sliding rod 31; during the upward movement of the sliding rod 31, air enters the protective cylinder 4 from the outside air through the vent hole 43, which allows the sliding rod 31 to move downward smoothly.

[0046] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, the slide bar 31 includes a rod body 311 and a second limiting protrusion 313. The second limiting protrusion 313 is located on the outer periphery of the rod body 311 and is disposed at the lower end of the rod body 311. The second limiting protrusion 313 is located below the support plate 2. The second limiting protrusion 313 contacts the inner wall of the protective cylinder 4, and the vent hole 43 is formed at the bottom of the protective cylinder 4.

[0047] By placing the second limiting protrusion 313 at the lower end of the rod 311 and positioning it below the support plate 2, the support plate 2 can limit the second limiting protrusion 313, thus preventing the slide rod 31 from moving excessively upward and causing it to disengage from the through hole 211, thereby preventing the limiting function of the slide rod 31 from failing.

[0048] By making the second limiting protrusion 313 contact the inner wall of the protective cylinder 4, the inner wall of the protective cylinder 4 can guide the second limiting protrusion 313, so that the slide rod 31 can move vertically upward or downward relative to the support plate 2, avoiding the slide rod 31 from deviating in the direction of movement and getting stuck in the through hole 211.

[0049] Because the second limiting protrusion 313 contacts the inner wall of the protective cylinder 4, when the sliding rod 31 moves downward, the second limiting protrusion 313 will compress the air inside the protective cylinder 4, which may cause the sliding rod 31 to be difficult to move downward due to the effect of this air. By forming the vent 43 at the bottom of the protective cylinder 4, regardless of the position of the sliding rod 31, the outside air can communicate with the air inside the protective cylinder 4, allowing the sliding rod 31 to move smoothly upward or downward.

[0050] Reference Figures 2-4According to some embodiments of the present invention, the support plate 2 includes a plurality of sub-support plates 21, each sub-support plate 21 being strip-shaped. The plurality of sub-support plates 21 are arranged at intervals along the width direction of the sub-support plates 21, and each sub-support plate 21 is fixedly connected to the frame 1 on both sides along the length direction. Each sub-support plate 21 has a plurality of through holes 211 formed thereon, and the plurality of through holes 211 on a single sub-support plate 21 are arranged at intervals along the length direction of the sub-support plate 21.

[0051] The number of protective cylinders 4 is the same as the number of sub-support plates 21 and they correspond one-to-one. The protective cylinders 4 extend along the length of the sub-support plates 21. The protective cylinder 4 includes a cylinder body 44 and multiple bottom covers 45. The cylinder body 44 is connected to the sub-support plates 21. The bottom of the cylinder body 44 is provided with multiple bottom holes 441. The number of bottom covers 45 is the same as the number of bottom holes 441 and they correspond one-to-one. Each bottom cover 45 is threaded to the corresponding bottom hole 441. The number of bottom holes 441 of each protective cylinder 4 is the same as the number of through holes 211 on the corresponding sub-support plate 21 and they correspond one-to-one.

[0052] By including multiple sub-support plates 21 in the support plate 2, and arranging the multiple sub-support plates 21 at intervals along the width direction, the manufacturing and transportation of the sub-support plates 21 are made more convenient, and it is easier to connect and install the sub-support plates 21 to the frame 1. By forming multiple through holes 211 on each sub-support plate 21, and arranging the multiple through holes 211 on a single sub-support plate 21 at intervals along the length direction of the sub-support plate 21, the arrangement of the through holes 211 is made more uniform, the arrangement of the limiting mechanism 3 is more uniform, and the limiting mechanism 3 can more fully match the shape and placement position of the furnace screen superheater, and can more fully limit the furnace screen superheater when hoisting it.

[0053] By making the number of protective cylinders 4 the same as the number of sub-support plates 21 and making them correspond one-to-one, the production and transportation of protective cylinders 4 can be made more convenient, and the connection and installation between protective cylinders 4 and sub-support plates 21 can be made simpler.

[0054] By threading each bottom cover 45 to the corresponding bottom hole 441, the connection between the bottom cover 45 and the cylinder 44 can be made simpler.

[0055] For example, a vent 43 is formed on the bottom cover 45, which connects the mounting cavity 41 with the outside air.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0058] In the description of this utility model, "multiple" means two or more.

[0059] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0060] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hoisting anti-deformation device for a Π-type furnace screen superheater in thermal power plants, characterized in that, include: A frame having a receiving cavity inside, and a plurality of hanging rings on the top of the frame, the plurality of hanging rings being arranged at intervals along the circumference of the frame; A support plate is disposed in the receiving cavity and connected to the frame. The support plate is used to support the thermal power Π-type furnace screen superheater. The support plate has a plurality of spaced through holes that penetrate the support plate in the vertical direction. Multiple limiting mechanisms are provided, the number of which is the same as the number of through holes and they correspond one-to-one. Each limiting mechanism includes a sliding rod, and the sliding rod of each limiting mechanism passes through the through hole in the vertical direction and is movable relative to the support plate in the vertical direction.

2. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant as described in claim 1, characterized in that, The plurality of the through holes are arranged in an array on the support plate; And / or, the support plate includes a plurality of sub-support plates, the sub-support plates being strip-shaped, the plurality of sub-support plates being spaced apart along the width direction of the sub-support plate, and each sub-support plate being fixedly connected to the frame on both sides along the length direction; each sub-support plate is provided with a plurality of through holes, the plurality of through holes on a single sub-support plate being spaced apart along the length direction of the sub-support plate.

3. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant as described in claim 1, characterized in that, It also includes a slip ring, which is connected to the inner peripheral wall of the through hole. The slip ring has a through-hole formed in the upper and lower parts, and the slide rod passes through the through-hole in the upper and lower direction.

4. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant as described in claim 1, characterized in that, The slide bar includes a rod body, a first limiting protrusion, and a second limiting protrusion. The first limiting protrusion is located at the upper end of the rod body and on the outer periphery of the rod body, and is located above the support plate. The second limiting protrusion is located at the lower end of the rod body and on the outer periphery of the rod body, and is located below the support plate.

5. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant as described in claim 1, characterized in that, The limiting mechanism includes an elastic element, which is connected to the lower end of the slide rod and located below the support plate. The upper end of the elastic element is connected to the lower end of the slide rod, and the lower end of the elastic element is connected to the support plate or the frame. The elastic element can undergo elastic deformation in the vertical direction.

6. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant according to claim 5, characterized in that, It also includes a protective cylinder, which is located below and connected to the support plate. The protective cylinder has an installation cavity, and the elastic element is accommodated in the installation cavity. The lower end of the elastic element is connected to the bottom of the protective cylinder.

7. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant according to claim 6, characterized in that, It also includes a guide rod, which is disposed in the mounting cavity and extends in the vertical direction. The elastic element is a spring and is sleeved on the outer periphery of the guide rod. The lower end of the elastic element is connected to the bottom of the protective cylinder. A guide channel extending in the vertical direction is formed in the slide rod. The guide channel passes through the slide rod in the vertical direction. The upper end of the guide rod extends into the guide channel and slides with the guide channel.

8. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant according to claim 6, characterized in that, The protective cylinder has a vent hole that connects the mounting cavity to the outside air.

9. The anti-deformation device for hoisting a Π-type superheater in a thermal power plant according to claim 8, characterized in that, The slide bar includes a rod body and a second limiting protrusion. The second limiting protrusion is located on the outer periphery of the rod body and is disposed at the lower end of the rod body. The second limiting protrusion is located below the support plate. The second limiting protrusion contacts the inner wall of the protective cylinder, and the vent hole is formed at the bottom of the protective cylinder.

10. The anti-deformation device for hoisting a Π-type furnace screen superheater in thermal power plants according to claim 6, characterized in that, The support plate includes multiple sub-support plates, each sub-support plate being strip-shaped. These sub-support plates are spaced apart along their width, and each sub-support plate is fixedly connected to the frame on both sides along its length. Each sub-support plate has multiple through holes, which are spaced apart along its length. The number of protective cylinders is the same as the number of sub-support plates and corresponds one-to-one. Each protective cylinder extends along the length of the sub-support plate and includes a cylinder body and multiple bottom covers. The cylinder body is connected to the sub-support plate, and the bottom of the cylinder body has multiple bottom holes. The number of bottom covers is the same as the number of bottom holes and corresponds one-to-one. Each bottom cover is threaded to its corresponding bottom hole. The number of bottom holes in each protective cylinder is the same as the number of through holes on the corresponding sub-support plate and corresponds one-to-one.

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