Mounting structure and method for water cooling wall of reheating boiler

Abstract

The invention relates to the technical field of reheating boilers, in particular to a reheating boiler water cooling wall mounting structure and a method thereof.The reheating boiler water cooling wall mounting structure comprises a support arranged in a reheating boiler, a conveying structure and a water cooling wall, and one side of the water cooling wall is provided with an extending part matched with the support; the conveying structure comprises a base and a plurality of conveying rollers arranged on the base, an open groove corresponding to the base is formed in the support, a lifting mechanism matched with the base is arranged in the support, a limiting plate matched with the open groove is fixedly arranged on the base, and the water cooling wall can be moved conveniently through the conveying structure; the water-cooled wall is installed at the needed position, the conveying structure moves downwards through the lifting mechanism to drive the water-cooled wall to move downwards, the protruding parts on the extending parts of the water-cooled wall are connected with the open grooves in a clamped mode, the water-cooled wall is fixed, the conveying structure and the lifting mechanism do not need to be taken out, operation is simpler, and the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of reheat boilers, and in particular to a reheat boiler water-cooled wall installation structure and a method thereof. Background Art

[0002] The water-cooled wall is the main heat-receiving part of the boiler. It is composed of several rows of steel pipes distributed around the boiler furnace. Its interior is flowing water or steam, and it receives the heat of the flame in the boiler furnace from the outside. It mainly absorbs the radiant heat of the high-temperature combustion products in the furnace. The working fluid moves upward in it and evaporates due to the heat. In the construction of reheat boilers, it is usually laid vertically on the inner wall of the furnace wall. It is the boiler heating surface mainly used to absorb the radiant heat given off by the flame and high-temperature flue gas in the furnace. It is the main type of evaporation heating surface of various modern boilers and is also the basic component in the boiler water circulation loop. When the water-cooled wall was originally designed, its purpose was not to receive heat, but to cool the furnace so that it would not be damaged by high temperature. Later, due to its good heat exchange function, it gradually replaced the steam drum as the main heat-receiving part of the boiler. It is laid on the inner wall of the boiler furnace and is an evaporation heating surface composed of many parallel pipes.

[0003] The existing water-cooled wall installation device generally adopts rollers or roller shafts to be rotatably connected with the water-cooled wall, so as to facilitate the adjustment of the position of the water-cooled wall and the installation of the water-cooled wall in place. For example, Chinese Patent Publication No. CN106989410A discloses "a waste heat boiler water-cooled wall installation device and installation method", which includes a roller and a base, wherein the base is a rectangular frame structure, and brackets are respectively arranged on the left and right sides of the upper end of the base. The roller is installed on the base through the brackets, and the water-cooled wall is lifted by means of a lifting machine, and the channel steel beam on the outer side of the water-cooled wall is placed on the roller. Hand winches are hung on the adjustment direction and the back side of the water-cooled wall, and the water-cooled wall is pulled on the roller by the hand winches until it reaches the designed position. After the water-cooled wall reaches the designed position, jacks are respectively arranged on both sides of the waste heat boiler water-cooled wall installation device, and the water-cooled wall is lifted from both ends of the water-cooled wall by the jacks, and then the waste heat boiler water-cooled wall installation device is withdrawn;

[0004] However, in actual use, during the installation process, not only is it necessary to use a jack to lift the water-cooled wall and then take out the water-cooled wall installation device to fix the water-cooled wall, but it is also difficult to take out the jack in a limited space when fixing the water-cooled wall, which takes a lot of time and affects the construction progress. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that the water-cooled wall installation device must be taken out to fix the water-cooled wall, it is difficult to take out the jack in a limited space, it takes a lot of time, and affects the construction progress, and a reheat boiler water-cooled wall installation structure and method are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A reheat boiler water-cooled wall installation structure is designed, comprising a bracket, a conveying structure and a water-cooled wall arranged in the reheat boiler, wherein an extension portion matching with the bracket is arranged on one side of the water-cooled wall, and the extension portion contacts with the conveying structure;

[0008] The conveying structure includes a base and a plurality of conveying rollers arranged on the base, a mounting frame rotatably connected to the conveying rollers is fixedly arranged on the base, a slot corresponding to the base is opened on the bracket, a lifting mechanism matching with the base is arranged in the bracket, a limiting plate matching with the slot is fixedly arranged on the base, and a protrusion matching with the conveying structure is fixedly arranged at the lower end of the extension portion.

[0009] Furthermore, the lifting mechanism includes a supporting device arranged in the bracket, and two ends of the supporting device are in contact with the bracket and the base respectively.

[0010] Furthermore, a motor is arranged in the bracket, and the output shaft of the motor is dynamically connected to a screw rod, and the screw rod is dynamically connected to the supporting device.

[0011] Furthermore, a sliding groove is provided in the slot, a blocking cover is slidably provided in the sliding groove, and a linkage mechanism cooperating with the blocking cover is provided on the bracket.

[0012] Furthermore, the linkage mechanism includes a mounting groove provided on the bracket, a driving gear is rotatably arranged in the mounting groove, and a tooth groove meshingly connected with the driving gear is provided on the blocking cover.

[0013] Furthermore, the linkage mechanism also includes a first transmission gear rotatably disposed in the installation slot, and a spur rack meshingly connected to the first transmission gear is slidably disposed in the installation slot.

[0014] Furthermore, a linkage block cooperating with the limit plate is fixedly provided on one side of the spur rack, a guide groove is opened on one side of the spur rack, and a guide column cooperating with the guide groove is fixedly provided in the installation groove.

[0015] Furthermore, a second transmission gear meshing with the first transmission gear and the driving gear is rotatably arranged in the installation groove, a spring is fixedly connected in the sliding groove, and the other end of the spring is fixedly connected to the blocking cover.

[0016] Furthermore, a positioning plate is fixedly provided on one side of the extension portion, and a positioning groove matching with the positioning plate is formed on one side of the bracket.

[0017] A method for installing a reheat boiler water wall comprises the above-mentioned reheat boiler water wall installation structure, and further comprises the following steps:

[0018] S1. Lift the water-cooled wall to the vicinity of the bracket by a lifting device, move the water-cooled wall so that the extension part is above the bracket, and move the water-cooled wall downward so that the extension part contacts the conveying structure;

[0019] S2. Push the water-cooled wall to slide along the conveying structure until the positioning plate is engaged with the positioning groove;

[0020] S3, controlling the supporting device through the motor, thereby controlling the conveying structure to move downward, driving the extension part and the water-cooled wall to move downward, until the protrusion at the lower end of the extension part is engaged with the slot on the bracket;

[0021] S4. When the motor controls the supporting device to control the conveying structure to move downward, the conveying structure moves downward and contacts the linkage block on the spur rack. The conveying structure continues to move downward to drive the linkage block and the spur rack to move downward, driving the first transmission gear to rotate, thereby driving the driving gear and the blocking cover to move to close the slot.

[0022] The present invention provides a reheat boiler water-cooled wall installation structure and method thereof, which has the following beneficial effects:

[0023] In the present invention, the water-cooled wall is conveniently moved by the conveying structure and installed at a desired position, and the conveying structure is moved downward by the lifting mechanism to drive the water-cooled wall downward, so that the raised portion on the extension portion of the water-cooled wall is engaged with the slot to fix the water-cooled wall. It is not necessary to take out the conveying structure and the lifting mechanism, which is simpler and improves installation efficiency.

[0024] Secondly, in the present invention, a linkage mechanism is provided to control the position of the baffle cover, and the conveying structure moves downward to contact the linkage block on the spur rack. The conveying structure continues to move downward to drive the linkage block and the spur rack downward, driving the first transmission gear to rotate, thereby driving the drive gear and the baffle cover to move and close the slot, preventing heat from entering the bracket through the slot and causing damage to the motor and the supporting device. By controlling the motor to drive the conveying structure to move upward, the water-cooled wall can be lifted up for easy removal for maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a reheat boiler water-cooled wall installation structure proposed by the present invention;

[0026] Figure 2 It is a structural schematic diagram of the screw rod of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the limiting plate of the present invention;

[0028] Figure 4It is a schematic structural diagram of the first transmission gear of the present invention.

[0029] In the figure: 1. bracket; 2. conveying structure; 21. base; 22. conveying roller; 23. mounting frame; 3. water-cooled wall; 4. extension part; 41. positioning plate; 5. lifting mechanism; 51. supporting device; 52. motor; 53. screw; 6. limit plate; 7. sliding groove; 71. spring; 8. cover; 9. linkage mechanism; 91. driving gear; 92. first transmission gear; 93. spur rack; 94. linkage block; 95. guide column; 96. second transmission gear. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-4 A reheat boiler water-cooled wall installation structure comprises a bracket 1, a conveying structure 2 and a water-cooled wall 3 arranged in the reheat boiler, an extension part 4 matched with the bracket 1 is arranged on one side of the water-cooled wall 3, and the extension part 4 contacts with the conveying structure 2;

[0032] The conveying structure 2 includes a base 21 and a plurality of conveying rollers 22 arranged on the base 21, a mounting frame 23 rotatably connected to the conveying rollers 22 is fixedly arranged on the base 21, a slot corresponding to the base 21 is opened on the bracket 1, a lifting mechanism 5 matching with the base 21 is arranged in the bracket 1, a limiting plate 6 matching with the slot is fixedly arranged on the base 21, and a protrusion matching with the conveying structure 2 is fixedly arranged at the lower end of the extension part 4.

[0033] In the present invention, the water-cooled wall 3 is conveniently moved by the conveying structure 2 and installed at the desired position, and the conveying structure 2 is moved downward by the lifting mechanism 5 to drive the water-cooled wall 3 to move downward, so that the raised portion on the extension portion 4 is engaged with the groove to fix the water-cooled wall 3. There is no need to remove the conveying structure 2 and the lifting mechanism 5, which is simpler and improves installation efficiency.

[0034] Furthermore, in this embodiment, the lifting mechanism 5 includes a supporting device 51 arranged in the bracket 1, and both ends of the supporting device 51 are in contact with the bracket 1 and the base 21 respectively. The position of the conveying structure 2 is controlled by the supporting device 51, thereby controlling the position of the water-cooled wall 3, so as to facilitate fixing the water-cooled wall 3 or lifting it for maintenance and replacement. The supporting device 51 can adopt a supporting device such as a scissor-type lifting mechanism or a linear motor.

[0035] In this embodiment, a motor 52 is provided in the bracket 1, and the output shaft of the motor 52 is dynamically connected to a screw 53, and the screw 53 is dynamically connected to the supporting device 51. In this embodiment, there are multiple supporting devices 51, and the screw 53 drives multiple supporting devices 51 at the same time. The supporting device 51 is preferably a scissor-type lifting mechanism. The output shaft of the motor 52 is provided with a gear, and the screw 53 is provided with a gear that matches the output shaft gear of the motor 52.

[0036] Furthermore, in the present embodiment, a sliding groove 7 is provided in the slot, a blocking cover 8 is slidably provided in the sliding groove 7, and a linkage mechanism 9 cooperating with the blocking cover 8 is provided on the bracket 1. The position of the blocking cover 8 is controlled by the linkage mechanism 9, so that the bracket 1 is sealed after the installation of the water-cooled wall 3 is completed, so that a sealing structure is formed in the bracket 1 to prevent heat from entering the bracket 1 along the slot and causing damage to the motor 52 and the supporting device 51.

[0037] In this embodiment, the linkage mechanism 9 includes an installation groove opened on the bracket 1, and a driving gear 91 is rotatably arranged in the installation groove. A tooth groove meshingly connected to the driving gear 91 is opened on the baffle cover 8. There are multiple tooth grooves arranged along a straight line. The position of the baffle cover 8 is controlled by the driving gear 91, which facilitates the formation of a sealing structure in the bracket 1.

[0038] It should be noted that, in this embodiment, the linkage mechanism 9 also includes a first transmission gear 92 rotatably arranged in an installation groove, and a spur rack 93 meshingly connected to the first transmission gear 92 is slidably arranged in the installation groove. The first transmission gear 92 is controlled to rotate by moving the spur rack 93 to provide power for the first transmission gear 92.

[0039] In this embodiment, a linkage block 94 that cooperates with the limit plate 6 is fixedly provided on one side of the spur rack 93, and a guide groove is opened on one side of the spur rack 93. A guide column 95 that cooperates with the guide groove is fixedly provided in the installation groove. The spur rack 93 is restricted by setting the guide column 95 to prevent it from being separated from the installation. The conveying structure 2 moves downward to drive the linkage block 94 and the spur rack 93 to move downward, driving the first transmission gear 92 to rotate, thereby driving the driving gear 91 and the cover 8 to move to close the groove, thereby preventing heat from entering the bracket 1 through the groove and damaging the motor 52 and the supporting device 51.

[0040] In addition, in this embodiment, a second transmission gear 96 is rotatably arranged in the installation groove and meshed with the first transmission gear 92 and the driving gear 91. A spring 71 is fixedly connected in the sliding groove 7. The other end of the spring 71 is fixedly connected to the blocking cover 8. When the conveying structure 2 moves upward, the blocking cover 8 is reset by the spring 71, so that the through groove is opened, which will not hinder the conveying structure 2 from moving upward, thereby lifting the water-cooled wall 3.

[0041] In this embodiment, a positioning plate 41 is fixedly provided on one side of the extension portion 4, and a positioning groove matching with the positioning plate 41 is provided on one side of the bracket 1. By providing the positioning groove matching with the positioning plate 41, it is convenient to confirm whether the water-cooled wall 3 is installed in place.

[0042] The present invention also provides a method for installing a reheat boiler water-cooled wall, comprising the above-mentioned reheat boiler water-cooled wall installation structure, and further comprising the following steps:

[0043] S1. Lift the water-cooled wall 3 to the vicinity of the bracket 1 by means of a lifting device, move the water-cooled wall 3 so that the extension portion 4 is above the bracket 1, and move the water-cooled wall 3 downward so that the extension portion 4 contacts the conveying structure 2;

[0044] S2, pushing the water-cooled wall 3 to slide along the conveying structure 2 until the positioning plate 41 is engaged with the positioning groove;

[0045] S3, controlling the supporting device 51 through the motor 52, thereby controlling the conveying structure 2 to move downward, driving the extension part 4 and the water-cooled wall 3 to move downward, until the protrusion at the lower end of the extension part 4 is engaged with the slot on the bracket 1;

[0046] S4. When the motor 52 controls the supporting device 51, thereby controlling the conveying structure 2 to move downward, the conveying structure 2 moves downward and contacts the linkage block 94 on the spur rack 93. The conveying structure 2 continues to move downward to drive the linkage block 94 and the spur rack 93 to move downward, driving the first transmission gear 92 to rotate, thereby driving the driving gear 91 and the blocking cover 8 to move to close the slot.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reheat boiler water-cooled wall installation structure, comprising a bracket (1), a conveying structure (2) and a water-cooled wall (3) arranged in the reheat boiler, characterized in that: An extension portion (4) matching with the bracket (1) is provided on one side of the water-cooled wall (3), and the extension portion (4) is in contact with the conveying structure (2); The conveying structure (2) comprises a base (21) and a plurality of conveying rollers (22) arranged on the base (21); a mounting frame (23) rotatably connected to the conveying rollers (22) is fixedly arranged on the base (21); a slot corresponding to the base (21) is provided on the bracket (1); a lifting mechanism (5) cooperating with the base (21) is arranged inside the bracket (1); a limiting plate (6) cooperating with the slot is fixedly arranged on the base (21); and a protrusion cooperating with the conveying structure (2) is fixedly arranged at the lower end of the extension portion (4).

2. A reheat boiler water wall installation structure according to claim 1, characterized in that: The lifting mechanism (5) comprises a supporting device (51) arranged in the bracket (1), and two ends of the supporting device (51) are in contact with the bracket (1) and the base (21) respectively.

3. A reheat boiler water wall installation structure according to claim 2, characterized in that: A motor (52) is arranged in the bracket (1), and the output shaft of the motor (52) is dynamically connected to a screw rod (53), and the screw rod (53) is dynamically connected to the supporting device (51).

4. The reheat boiler water wall installation structure according to claim 1, characterized in that: A sliding groove (7) is provided in the slot, a blocking cover (8) is slidably arranged in the sliding groove (7), and a linkage mechanism (9) matched with the blocking cover (8) is provided on the bracket (1).

5. A reheat boiler water wall installation structure according to claim 4, characterized in that: The linkage mechanism (9) comprises a mounting groove formed on the bracket (1), a driving gear (91) being rotatably arranged in the mounting groove, and a tooth groove meshingly connected with the driving gear (91) is formed on the blocking cover (8).

6. A reheat boiler water wall installation structure according to claim 5, characterized in that: The linkage mechanism (9) further comprises a first transmission gear (92) rotatably arranged in the installation slot, and a spur rack (93) meshingly connected with the first transmission gear (92) is slidably arranged in the installation slot.

7. A reheat boiler water wall installation structure according to claim 6, characterized in that: A linkage block (94) matching with the limit plate (6) is fixedly arranged on one side of the spur rack (93), a guide groove is opened on one side of the spur rack (93), and a guide column (95) matching with the guide groove is fixedly arranged in the installation groove.

8. The reheat boiler water wall installation structure according to claim 6, characterized in that: A second transmission gear (96) is rotatably arranged in the installation groove and meshes with the first transmission gear (92) and the driving gear (91). A spring (71) is fixedly connected in the sliding groove (7), and the other end of the spring (71) is fixedly connected to the blocking cover (8).

9. The reheat boiler water wall installation structure according to claim 1, characterized in that: A positioning plate (41) is fixedly provided on one side of the extension portion (4), and a positioning groove matching the positioning plate (41) is provided on one side of the bracket (1).

10. A method for installing a reheat boiler water wall, comprising the reheat boiler water wall installation structure according to any one of claims 1 to 9, characterized in that: The following steps are also included: S1. Lifting the water-cooled wall (3) to the vicinity of the support (1) by means of a lifting device, moving the water-cooled wall (3) so that the extension portion (4) is located above the support (1), and moving the water-cooled wall (3) downward so that the extension portion (4) is in contact with the conveying structure (2); S2, pushing the water-cooled wall (3) to slide along the conveying structure (2) until the positioning plate (41) is engaged with the positioning groove; S3, controlling the supporting device (51) through the motor (52), thereby controlling the conveying structure (2) to move downward, driving the extension part (4) and the water-cooled wall (3) to move downward, until the protrusion at the lower end of the extension part (4) is engaged with the slot on the bracket (1); S4. When the motor (52) controls the supporting device (51) and thus controls the conveying structure (2) to move downward, the conveying structure (2) moves downward and contacts the linkage block (94) on the spur rack (93). The conveying structure (2) continues to move downward, driving the linkage block (94) and the spur rack (93) to move downward, driving the first transmission gear (92) to rotate, thereby driving the driving gear (91) and the blocking cover (8) to move and close the slot.

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