Auxiliary tool for overhauling and cleaning cooling triangular tube bundle of indirect cooling tower

Abstract

The utility model discloses an auxiliary tool for overhauling and cleaning a cooling triangular tube bundle of an indirect cooling tower, and relates to the technical field of thermal power generation equipment maintenance. According to the technical key points, a horizontal beam is included, a first stand column and a second stand column are arranged below the two ends of the horizontal beam respectively, and the upper ends of the first stand column and the second stand column are welded and fixed to the lower sides of the two ends of the horizontal beam respectively; an electric hoist is arranged on the upper side of the horizontal cross beam and is fixedly mounted on the horizontal cross beam; the free end of a traction steel wire on the electric hoist extends downwards from one side of the horizontal cross beam and is connected with a suspension cage through a plurality of steel wire ropes. The electric hoist of the horizontal cross beam is matched with the suspension cage to put a worker into the cooling triangular tube bundle to carry out overhauling and cleaning work, and compared with the prior art, the safety of the worker during operation is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of thermal power generation equipment maintenance, and in particular to an auxiliary tool for repairing and cleaning a cooling triangle tube bundle of an indirect cooling tower. Background Art

[0002] The indirect cooling tower cooling triangle tube bundle is a device used to improve cooling efficiency. Its core principle is to enhance the cooling effect by optimizing the air flow field structure. This device usually consists of two first-type cooling columns and second-type cooling columns that intersect at one end and are arranged at a certain angle, usually 40°-60°. Each cooling column is composed of multiple columnar cooling tube bundles with wedge-shaped gaps connected in series. The wedge-shaped gaps between these tube bundles can optimize air flow, thereby improving cooling efficiency. The structural features of the indirect cooling tower cooling triangle mainly include its unique triangular design, columnar cooling tube bundles with wedge-shaped gaps, and spray cooling device.

[0003] After a period of use, the cooling triangle tube bundles of intercooler towers often require regular inspection and maintenance by specialized personnel. These inspections include radiator fin disassembly, fin replacement, fin assembly and pressure testing for leaks, repair and disassembly of related piping, sealing plates, and bolts, adjustment of louver openings, and fin cleaning. The cooling triangle tube bundles are typically quite high, typically reaching over 29 meters. Traditionally, maintenance workers employ a Spider-Man-style aerial work method. In this method, maintenance personnel wear Spider-Man-like costumes and utilize spiderweb-like slings and other devices to rapidly ascend and move within the intercooler tower's cooling triangle tube bundles to perform cleaning and maintenance operations. This Spider-Man-style aerial work method requires workers to possess extensive experience in handling complex high-altitude working environments. A slight negligence during the maintenance process can lead to scratches or collisions with structural components on the equipment, potentially harming the worker's health. This safety requirement clearly needs to be improved. Utility Model Content

[0004] The present application provides an auxiliary tool for repairing and cleaning the cooling triangle tube bundle of an indirect cooling tower, which can improve the safety of workers when repairing and cleaning the cooling triangle tube bundle of an indirect cooling tower.

[0005] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0006] An auxiliary tool for inspecting and cleaning a cooling triangular tube bundle of an indirect cooling tower comprises a horizontal beam, wherein a first column and a second column are respectively provided below both ends of the horizontal beam, and the upper ends of the first column and the second column are respectively welded and fixed to the lower sides of both ends of the horizontal beam;

[0007] An electric hoist is provided on the upper side of the horizontal beam, and the electric hoist is fixedly installed on the horizontal beam, and the electric hoist is close to the second column on the horizontal beam;

[0008] The free end of the traction wire on the electric hoist extends downward from one side of the horizontal beam and is connected to a cage through multiple steel ropes. The cross-sectional area of the cage is smaller than the inner cross-sectional area of the cooling triangle tube bundle.

[0009] Furthermore, the lower end of the second column is fixedly connected to a horizontally arranged support beam, and the connection point between the second column and the support beam is located in the middle position of the support beam, and the length of the support beam is greater than the width of the inspection port above a single cooling triangular tube bundle.

[0010] Furthermore, the second column is symmetrically provided with two first diagonal braces on one opposite side along the length direction of the supporting beam, the upper ends of the two first diagonal braces are fixedly connected to the second column, and the lower ends of the two first diagonal braces are fixedly connected to the supporting beam.

[0011] Furthermore, a second diagonal brace and a third diagonal brace are respectively provided on the sides close to each other of the second column and the first column, the upper ends of the second diagonal brace and the third diagonal brace are fixedly connected to the horizontal beam, and the lower ends of the second diagonal brace and the third diagonal brace are respectively fixedly connected to the second column and the first column.

[0012] Furthermore, the lower end of the first column is fixedly connected to a horizontally arranged enlarged base, and the length of the enlarged base is less than the length of the supporting beam; the first column is provided with a fourth diagonal brace on each opposite side along the length direction of the enlarged base, and the upper and lower ends of the two fourth diagonal braces are fixedly connected to the first column and the enlarged base, respectively.

[0013] Furthermore, the cross-sectional area of the cage is a triangle that is proportional to the cross-sectional area of the cooling triangular tube bundle, and a lifting lug is fixedly installed on each of the three corners of the top of the cage. The three lifting lugs are fixedly connected to the buckle on the free end of the traction wire on the electric hoist through a steel wire rope.

[0014] Furthermore, footboards are welded to the sides of the bottom of the cage.

[0015] Furthermore, two movable rollers are symmetrically provided on the lower sides of the enlarged base and the supporting beam.

[0016] Furthermore, the distance between the two movable rollers on the lower side of the supporting beam is smaller than the width of the inspection opening above a single cooling triangular tube bundle.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] When workers need to carry out maintenance work on the cooling triangle tube bundle of the intercooler, they can first open the protective cover at the inspection port on the widened platform of the intercooler corresponding to the upper port of the cooling triangle tube bundle to be repaired, and then assemble the horizontal beam, first column, second column, electric hoist and cage of the present application and place them on the exposed inspection port. The maintenance worker then stands in the cage with tools, opens the electric hoist and places the maintenance worker on the cage into the cooling triangle tube bundle. After arriving at the designated position, the maintenance worker can carry out related maintenance, maintenance and cleaning work on the cage. Compared with the Spider-Man high-altitude operation method used in the prior art, the cage of the present application not only provides workers with a stable working platform, but also, even if the cooling triangle tube bundle is accidentally shaken, the cage will first contact the structural parts, thereby preventing workers from being injured due to bumps, significantly reducing the safety risks of workers during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the state when the application is used on an indirect cooling tower;

[0022] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure numerals: 1. horizontal beam; 2. first column; 3. second column; 4. electric hoist; 5. cage; 6. supporting beam; 7. first diagonal brace; 8. second diagonal brace; 9. third diagonal brace; 10. enlarged base; 11. fourth diagonal brace; 12. lifting lug; 13. footboard; 14. moving roller; 15. intercooler; 16. inspection port; 17. protective cover; 18. guardrail. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0025] like Figure 1-Figure 3 As shown, an auxiliary tool for repairing and cleaning the triangular tube bundle of an indirect cooling tower disclosed in this application includes a horizontal beam 1, and a first column 2 and a second column 3 are respectively provided below the two ends of the horizontal beam 1. The upper ends of the first column 2 and the second column 3 are respectively welded and fixed to the lower sides of the two ends of the horizontal beam 1;

[0026] An electric hoist 4 is provided on the upper side of the horizontal beam 1. The electric hoist 4 is fixedly mounted on the horizontal beam 1 and is close to the second column 3 on the horizontal beam 1.

[0027] The free end of the traction wire on the electric hoist 4 extends downward from one side of the horizontal beam 1 and is connected to a cage 5 through multiple steel ropes. The cross-sectional area of the cage 5 is smaller than the inner cross-sectional area of the cooling triangle tube bundle.

[0028] In the above embodiment, the tops of the first column 2 and the second column 3 are connected by a horizontal beam 1, so that the horizontal beam 1 with a certain span between the first column 2 and the second column 3 can be stably supported by the first column 2 and the second column 3, thereby providing an installation foundation for the electric hoist 4 thereon, and when the electric hoist 4 suspends the hoist cage 5, the force is evenly transmitted to the first column 2 and the second column 3. In the intercooler 15, there is a widening platform at the top of the cooling triangle tube bundle, and an independently installable protective cover 17 is provided at a position corresponding to the upper port of each cooling triangle tube bundle on the widening platform. After the worker opens the protective cover 17, the upper port of the cooling triangle tube bundle can be exposed, which is also the main channel for workers to enter the cooling triangle tube bundle.

[0029] When a worker needs to carry out maintenance work on the cooling triangle tube bundle in the intercooling tower 15, he can first open the protective cover 17 at the inspection port 16 corresponding to the upper end of the cooling triangle tube bundle to be repaired on the widened platform of the intercooling tower 15, and then assemble the horizontal beam 1, the first column 2, the second column 3, the electric hoist 4 and the cage 5 of the present application and place them on the exposed inspection port 16. The maintenance worker then stands in the cage 5 with tools, opens the electric hoist 4 and places the maintenance worker on the cage 5 into the cooling triangle tube bundle. After arriving at the designated position, the maintenance worker can carry out related maintenance, maintenance and cleaning work on the cage 5. Compared with the Spider-Man high-altitude operation method used in the prior art, the cage 5 of the present application not only provides workers with a stable working platform, but also, even if the cooling triangle tube bundle is accidentally shaken, the cage 5 will first contact the structural parts, thereby preventing workers from being injured due to bumps and significantly reducing the safety risks of workers during operation. In addition, multiple workers can stand in the cage 5 of the present application at the same time, which significantly improves the efficiency of the work and eliminates the need to worry about safety accidents caused by entanglement of the ropes between the workers.

[0030] Furthermore, if Figure 1As shown, the lower end of the second column 3 is fixedly connected to a horizontally arranged supporting beam 6, and the connection point between the second column 3 and the supporting beam 6 is located in the middle position of the supporting beam 6. The length of the supporting beam 6 is greater than the width of the inspection port 16 above a single cooling triangular tube bundle.

[0031] In the above embodiments, Figure 3 As shown, the length of the support beam 6 arranged below the second column 3 in the present application is greater than the width of the inspection port 16 above the single cooling triangular tube bundle. In this way, when the support beam 6 is placed on the inspection port 16 above the cooling triangular tube bundle, the support beam 6 can span the inspection port 16, so that the second column 3 stands in the middle position in the width direction of the inspection port 16, so that the cage 5 can be lowered as much as possible along the center of the inspection port 16.

[0032] Furthermore, if Figure 1 As shown, two first diagonal braces 7 are symmetrically provided on an opposite side of the second column 3 along the length direction of the supporting beam 6. The upper ends of the two first diagonal braces 7 are fixedly connected to the second column 3, and the lower ends of the two first diagonal braces 7 are fixedly connected to the supporting beam 6.

[0033] In the above embodiment, the first diagonal braces 7 provided on both sides of the supporting beam 6 can increase the integrity between the second column 3 and the supporting beam 6 as well as their strength when in use.

[0034] Furthermore, if Figure 1 As shown, the second diagonal brace 8 and the third diagonal brace 9 are respectively provided on the sides close to each other of the second column 3 and the first column 2. The upper ends of the second diagonal brace 8 and the third diagonal brace 9 are fixedly connected to the horizontal beam 1, and the lower ends of the second diagonal brace 8 and the third diagonal brace 9 are respectively fixedly connected to the second column 3 and the first column 2.

[0035] In the above embodiment, the second diagonal brace 8 and the third diagonal brace 9 are arranged in the above manner, which can increase the integrity between the horizontal beam 1 and the second column 3 and the first column 2, and through the second column 3 and the first column 2, the third diagonal brace 9 and the second diagonal brace 8 can provide a certain support force for the horizontal beam 1, thereby improving the flexural strength of the horizontal beam 1 during use, thereby ensuring the safety of workers at work.

[0036] Furthermore, if Figure 1 As shown, the lower end of the first column 2 is fixedly connected to a horizontally arranged enlarged base 10, and the length of the enlarged base 10 is less than the length of the supporting beam 6; the first column 2 is provided with a fourth diagonal brace 11 on the opposite side along the length direction of the enlarged base 10, and the upper and lower ends of the two fourth diagonal braces 11 are fixedly connected to the first column 2 and the enlarged base 10 respectively.

[0037] In the above embodiment, the expanded base 10 is a horizontally arranged square tube, which is connected to the first column 2 via two fourth diagonal braces 11, which can increase the contact area between the bottom of the first column 2 and the ground, thereby improving the stability of the first column 2 during use. In this way, when the entire device moves circumferentially along the intercooler 15, the rotation radius of the expanded base 10 is smaller than the rotation radius of the support beam 6. Accordingly, the distance the support beam 6 rotates per unit time is greater than the distance the expanded base 10 rotates in the same time. In this application, the length of the expanded base 10 is set to be smaller than the length of the support beam 6. This allows the expanded base 10 to be more flexible when rotating around the intercooler 15, making it easier for workers to control it.

[0038] Furthermore, if Figure 1 and Figure 3 As shown, the cross-sectional area of the cage 5 is a triangle that is proportional to the cross-sectional area of the cooling triangular tube bundle. A lifting lug 12 is fixedly installed on each of the three corners on the top of the cage 5. The three lifting lugs 12 are fixedly connected to the buckle on the free end of the traction wire on the electric hoist 4 through a steel wire rope.

[0039] In the above embodiment, the cage 5 is arranged in the above manner so that it can better utilize the space inside the cooling triangular tube bundle when in use, so that the workers will have more operating space during operation. The lifting ears 12 installed on the three corners of the top of the cage 5 are respectively put into the buckles on the free ends of the traction wires of the electric hoist 4 through a steel wire, so that the buckles are used to fix the three steel wire ropes together. In this way, when the electric hoist 4 drives the traction wire to move in the vertical direction, it can simultaneously use the three steel wire ropes to carry the cage 5 to rise or fall smoothly.

[0040] Furthermore, if Figure 1 As shown, footboards 13 are welded to the sides of the bottom of the cage 5 .

[0041] In the above embodiment, the footboard 13 is welded to the lower side of the cage 5. In this way, when workers have objects falling or people falling while working and rolling to the side of the scaffolding, the footboard 13 can block them and prevent them from falling from a high altitude.

[0042] Furthermore, if Figure 1 and Figure 3 As shown, two moving rollers 14 are symmetrically provided on the lower sides of the enlarged base 10 and the supporting beam 6 .

[0043] In the above embodiment, the movable rollers 14 provided on the lower side of the enlarged base 10 and the supporting beam 6 facilitate workers to easily and quickly push the entire device to a desired position on the widened platform of the intercooler 15 when in use.

[0044] Furthermore, if Figure 3As shown, the distance between the two moving rollers 14 on the lower side of the supporting beam 6 is smaller than the width of the inspection opening 16 above a single cooling triangle tube bundle.

[0045] In the above embodiment, the first column 2 placed on the inner side of the widening platform guardrail 18 can be tied and fixed to the guardrail 18 by a binding rope, so that the first column 2 can remain stable during use. However, the second column 3 is close to the edge of the widening platform when in use, and it is not convenient to fix it. In this way, if the movable roller 14 on the supporting beam 6 below the second column 3 swings, it will affect the construction safety of the workers. Therefore, the distance between the two movable rollers 14 located on the lower side of the supporting beam 6 of this application is set according to the above method. In this way, when the supporting beam 6 is placed on the inspection port 16 above the cooling triangle tube bundle, the supporting beam 6 will directly contact the other protective cover plates 17 on both sides of the inspection port 16, and the movable rollers 14 on the supporting beam 6 will be located in the inspection port 16. In this way, the pressure exerted on the supporting beam 6 by the workers when working in the cooling triangle tube bundle is vertically downward, and this force will further increase the friction between the supporting beam 6 and the protective cover plate 17 of the area where it is placed, thereby reducing the risk of the supporting beam 6 swinging due to the movable rollers 14 below it, and further improving the safety during work. During actual work, temporary fixation can be performed between the supporting beam 6 and the protective cover plate 17 on the adjacent side of the inspection opening 16 by installing bolts and nuts, so as to reduce the risk of equipment swinging when workers are working.

[0046] The implementation principle of this embodiment is as follows: first, the entire device of the present application is assembled on the widened platform of the intercooling tower 15. The assembled device crosses the guardrail 18 on the widened platform along the radial direction of the intercooling tower 15, wherein the first column 2 is on the inner side of the guardrail 18 (the side of the guardrail 18 close to the tower body of the intercooling tower 15), and the second column 3 is located on the outer side of the guardrail 18. Next, a worker opens the protective cover 17 in the inspection port 16 corresponding to the upper end of the cooling triangle tube bundle to be repaired. When the worker pushes the entire device to the front of the inspection port 16, the traction wires on the cage 5 and the electric hoist 4 are connected by a wire rope. Finally, the entire device is pushed to the top of the inspection port 16 and the device position is fixed. A designated worker stands in the cage 5. To ensure the worker's safety, a safety rope is tied around the worker, with the end of the rope fixed to a sturdy structure (such as a guardrail 18 or a horizontal beam 1). The electric hoist 4 is then activated, and the cage 5 is lowered to a designated position within the cooling triangle bundle. The worker then begins maintenance and cleaning work on the cage 5. Compared to the existing spider-man aerial work method, the present invention significantly improves safety and reduces the operational difficulty for workers working on the cage 5.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An auxiliary tool for maintenance and cleaning of the cooling triangle tube bundle of an indirect cooling tower, characterized by: It comprises a horizontal beam (1), wherein a first column (2) and a second column (3) are respectively provided below both ends of the horizontal beam (1), and the upper ends of the first column (2) and the second column (3) are respectively welded and fixed to the lower sides of both ends of the horizontal beam (1); An electric hoist (4) is provided on the upper side of the horizontal beam (1), the electric hoist (4) is fixedly mounted on the horizontal beam (1), and the electric hoist (4) is close to the second column (3) on the horizontal beam (1); The free end of the traction wire on the electric hoist (4) extends downward from one side of the horizontal beam (1) and is connected to a cage (5) through a plurality of steel wire ropes, and the cross-sectional area of the cage (5) is smaller than the inner cross-sectional area of the cooling triangle tube bundle; The lower end of the second column (3) is fixedly connected to a horizontally arranged support beam (6), and the connection point between the second column (3) and the support beam (6) is located in the middle of the support beam (6), and the length of the support beam (6) is greater than the width of the inspection port (16) above the single cooling triangular tube bundle; The second column (3) is symmetrically provided with two first diagonal braces (7) on opposite sides along the length direction of the supporting beam (6), the upper ends of the two first diagonal braces (7) are fixedly connected to the second column (3), and the lower ends of the two first diagonal braces (7) are fixedly connected to the supporting beam (6); A second diagonal brace (8) and a third diagonal brace (9) are respectively provided on the sides close to each other of the second column (3) and the first column (2); the upper ends of the second diagonal brace (8) and the third diagonal brace (9) are fixedly connected to the horizontal beam (1); and the lower ends of the second diagonal brace (8) and the third diagonal brace (9) are respectively fixedly connected to the second column (3) and the first column (2); The lower end of the first column (2) is fixedly connected to a horizontally arranged enlarged base (10), and the length of the enlarged base (10) is less than the length of the supporting beam (6); the first column (2) is provided with a fourth diagonal brace (11) on each opposite side along the length direction of the enlarged base (10), and the upper and lower ends of the two fourth diagonal braces (11) are fixedly connected to the first column (2) and the enlarged base (10), respectively; Two movable rollers (14) are symmetrically provided on the lower sides of the enlarged base (10) and the supporting beam (6); The distance between the two moving rollers (14) on the lower side of the supporting crossbeam (6) is smaller than the width of the inspection opening (16) above a single cooling triangular tube bundle.

2. The auxiliary tool for repairing and cleaning the cooling triangle tube bundle of the indirect cooling tower according to claim 1 is characterized in that: The cross-sectional area of the cage (5) is a triangle in proportion to the cross-sectional area of the cooling triangular tube bundle. A lifting lug (12) is fixedly mounted on each of the three corners of the top of the cage (5). The three lifting lugs (12) are fixedly connected to the buckle on the free end of the traction wire on the electric hoist (4) through a steel wire rope.

3. The auxiliary tool for repairing and cleaning the cooling triangle tube bundle of the indirect cooling tower according to claim 2 is characterized in that: Footboards (13) are welded to the circumferential sides of the bottom of the cage (5).

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