Rotary coke tank efficient maintenance lifting appliance and lifting method

Abstract

The invention discloses a rotary coke tank efficient maintenance lifting appliance and a lifting method, a rotary coke tank comprises a coke tank body and a lifting beam, the coke tank body is placed on the lifting beam, the rotary coke tank efficient maintenance lifting appliance comprises a lifting appliance beam and a plurality of main lifting ropes, the lifting appliance beam is provided with a plurality of guide structures, and the lifting appliance beam is provided with a plurality of main lifting ropes. The top ends of the plurality of main hoisting ropes are all connected with hoisting equipment, and the other ends of the plurality of main hoisting ropes respectively penetrate through the corresponding guide structures, then extend downwards in a vertical state, penetrate through a gap between the coke tank body and the hoisting beam and then are connected with a hoisting point of the coke tank body, so that the coke tank body is horizontally hoisted. According to the efficient overhaul lifting appliance for the rotary coke tank, the lifting weight and the lifting risk are reduced, and the lifting overhaul efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dry quenching coke production, and in particular to a high-efficiency maintenance hoist for a rotary coke drum and a hoisting method. Background Art

[0002] The rotating coke drum in a coking plant's CDQ production line primarily consists of the drum body and a lifting beam. Heat-resistant linings are installed within the drum body to support the red-hot coke produced by the coke oven. Coke drum transport vehicles and elevators transport the coke to the CDQ furnace roof, over 40 meters high, where the coke is unloaded into the CDQ furnace. This cyclical round-trip between the coke oven and the CDQ furnace occurs every 10 minutes, totaling over 50,000 trips per year. Consequently, the heat-resistant materials within the drum body, such as the heat-resistant lining, wear rapidly, necessitating periodic offline maintenance.

[0003] like Figure 1 As shown, in the prior art, a rotary coke drum includes a drum body 100 and a lifting beam 110. The drum body 100 is placed on the lifting beam 110 and connected via a lifting force joint 130. When the drum body is inspected or replaced, the drum body 100 and the lifting beam 110 are usually lifted together. Specifically, the total weight of the rotary coke drum reaches 34.3 tons (the total weight of the drum body 100 and the lifting beam 110). Each offline inspection requires a 160-ton crane to lift the rotary coke drum to be repaired from the drum transport vehicle to the inspection platform, and then lift the spare rotary coke drum that has been repaired in advance onto the drum transport vehicle. Due to the large lifting tonnage and thick wire rope, maintenance personnel must climb up to the 6-meter-high lifting beam 110 to thread the wire rope. This not only poses a high safety risk, but is also time-consuming and labor-intensive, and the crane costs are also relatively high.

[0004] In addition, since the rotating coke drum is heavy and there is only one pair of lifting lugs on the lifting beam 110 with a span of 6.4 meters, the horizontal component of force generated by the angle of the wire rope is large due to the tilt of the wire rope during lifting, which can easily lead to deformation of the lifting beam 110 assembly and shrinkage of the lifting lugs. When the span of the lifting lugs becomes smaller, the matching accuracy between the lifting beam 110 and the hoisting hook of the hoist will be destroyed, which will have a certain impact on the safe operation of the hoist. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rotary coke drum efficient maintenance hoist and a lifting method in response to the above-mentioned deficiencies in the prior art. The rotary coke drum efficient maintenance hoist reduces the lifting weight and lifting risk, and improves the efficiency of lifting and maintenance.

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

[0007] A rotary coke drum high-efficiency maintenance hoist, the rotary coke drum comprises a coke drum body and a lifting beam, the coke drum body is placed on the lifting beam, comprises a hoist beam, and a plurality of main lifting ropes, the hoist beam is provided with a plurality of guide structures, the top ends of the plurality of main lifting ropes are connected to the lifting equipment, and the other ends respectively pass through the corresponding guide structures and extend downward in a vertical state, and pass through the gap between the coke drum body and the lifting beam and are connected to the lifting point of the coke drum body to lift the coke drum body horizontally.

[0008] Preferably, the spreader beam is a frame structure, a plurality of guide structures are evenly spaced along the circumference of the spreader beam, and the number of the main lifting ropes is the same as the number of the guide structures, and each main lifting rope passes through its corresponding guide structure.

[0009] Preferably, the sling beam includes a rectangular main frame, the number of the main lifting ropes and the guide structures is four, and the four guide structures are respectively arranged at the four corners of the main frame.

[0010] Preferably, the projections of the connection points of the plurality of main lifting ropes and the lifting equipment on the plane where the spreader beam is located coincide with the center point of the main frame.

[0011] Preferably, the rotary coke drum efficient maintenance hoist further includes four auxiliary hoisting ropes, one end of each of the auxiliary hoisting ropes is connected to the hoisting equipment, and the other end of each of the auxiliary hoisting ropes is connected to the hoisting beam.

[0012] Preferably, the connection points of the four auxiliary lifting ropes and the main frame form a rectangle, a pair of sides of the rectangle coincide with a pair of sides of the main frame, and the other pair of sides is parallel to the other pair of sides of the main frame.

[0013] Preferably, the projections of the connection points of the plurality of auxiliary lifting ropes and the lifting equipment on the plane where the spreader beam is located coincide with the center point of the main frame.

[0014] Preferably, the hanger beam further includes a reinforcing rod, and both ends of the reinforcing rod are respectively fixed on the main frame.

[0015] Preferably, the guide structure adopts an elbow, and the bottom outlet of the elbow is vertically downward.

[0016] The present invention also provides a method for lifting a rotary coke drum, using the above-mentioned rotary coke drum high-efficiency maintenance hoist, and the method is as follows:

[0017] The lifting equipment lifts the spreader beam to the top of the coke drum body and keeps the spreader beam in a horizontal state;

[0018] The hoisting equipment drives the spreader beam to move vertically downward so that the main hoisting rope passes through the gap between the coke drum body and the lifting beam;

[0019] Connecting the bottom ends of multiple main hoisting ropes to multiple lifting points of the coke drum body, and lap-connecting the hoisting beam to the top of the coke drum body;

[0020] The lifting equipment drives the lifting beam and the main lifting rope to rise, thereby lifting the coke drum body.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] (1) In the present invention, the rotary coke drum high-efficiency maintenance hoist can directly lift the coke drum body without lifting the lifting beam, which greatly reduces the lifting weight during maintenance and replacement, effectively saves costs, and shortens the time of lifting operations.

[0023] (2) In the present invention, the main hoisting rope is in contact with the hoisting beam only, and the horizontal component force generated by the main hoisting rope during the hoisting process will only act on the hoisting beam, thereby not affecting the top of the coke tank body.

[0024] (3) In the present invention, the sling beam is overlapped on the top of the coke drum body. Since the main hoisting rope is set at an angle, its component force will firmly lock the sling beam on the top of the coke drum body, thereby ensuring that the sling beam, the coke drum body and the main hoisting rope become a whole during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the hoisting of a rotary coke drum in the prior art;

[0026] Figure 2 3D schematic diagram of the structure of the high-efficiency maintenance hanger for the rotary coke drum in Example 1 of the present invention;

[0027] Figure 3 is a cross-sectional view of the high-efficiency maintenance hanger for the rotary coke drum in Example 1 of the present invention;

[0028] Figure 4 is a cross-sectional view of the hoisting beam in Example 1 of the present invention;

[0029] Figure 5 It is a top view of the lifting beam in Example 1 of the present invention.

[0030] In the figure: 100-coke drum body, 110-lifting beam, 130-lifting force connection point, 200-hoisting device beam, 210-main frame, 211-first side, 212-second side, 213-third side, 214-fourth side, 220-guide structure, 230-reinforcement rod, 300-main lifting rope, 310-auxiliary lifting rope, 400-lifting equipment. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of the present invention.

[0032] In the description of the present invention, it should be noted that the term "upper" and the like to indicate an orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connect," "dispose," "install," "fix," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] Example 1

[0036] like Figure 1-5 As shown, this embodiment discloses a high-efficiency rotary coke drum maintenance hoist, comprising a hoist beam 200 and multiple main hoisting ropes 300. The hoist beam 200 is provided with multiple guide structures 220. The top ends of the multiple main hoisting ropes 300 are connected to the hoisting equipment 400, while the other ends pass through the corresponding guide structures 220 and extend vertically downward. They then pass through the gap between the coke drum body 100 and the lifting beam 110 and connect to the hoisting points of the coke drum body 100 to hoist the coke drum body 100 horizontally.

[0037] like Figure 1As shown, in the prior art, a rotating coke drum comprises a drum body 100 and a lifting beam 110, with the drum body 100 placed on the lifting beam 110. When the drum body 100 needs to be replaced or repaired, the lifting beam 110 is lifted by a crane. The drum body 100 and the lifting beam 110 are hoisted and transported together, with a total hoisting weight of up to 34.3 tons. This hoisting method requires a 160-ton crane, which is expensive. Furthermore, manual labor is required to climb the 6-meter-high lifting beam 110 to remove and attach the wire rope, posing a significant safety risk. Furthermore, due to the heavy weight of the rotating coke drum and the fact that the lifting beam 110 has only one pair of lifting lugs with a large span, the horizontal force generated by the wire rope during hoisting is significant, which can easily cause deformation of the lifting beam 110, resulting in a reduction in the span of the lifting lugs. This, in turn, compromises the precision of the fit between the lifting beam 110 and the hook plate of the hoisting equipment, compromising the safe operation of the crane.

[0038] The sling beam 200 is a frame structure, and multiple guide structures 220 are evenly arranged along the circumference of the sling beam 200. The number of main hoisting ropes 300 is the same as the number of guide structures 220, and each main hoisting rope 300 passes through its corresponding guide structure 220.

[0039] like Figure 2 As shown, specifically, the spreader beam 200 includes a rectangular main frame 210 , and the number of the main hoisting ropes 300 and the guide structures 220 is four. The four guide structures 220 are respectively arranged at the four corners of the main frame 210 .

[0040] Furthermore, the projection of the connection point between the four main hoisting ropes 300 and the lifting equipment 400 onto the plane of the sling beam 200 coincides with the center point of the main frame 210. In other words, the four main hoisting ropes 300 are symmetrically distributed, with the upper section of each main hoisting rope 300 being an inclined section and the lower section being a vertical section. Furthermore, the angle between the inclined end of each main hoisting rope 300 and the horizontal plane is the same, ensuring that the coke drum body 100 can be hoisted horizontally during the hoisting process and that the coke drum body 100 remains horizontal. The lifting equipment 400 is a crane, and the connection point between the main hoisting ropes 300 and the lifting equipment 400 is the crane's hook.

[0041] like Figure 2 As shown, in this embodiment, the rotary coke drum efficient maintenance hoist further includes four auxiliary hoisting ropes 310, one end of each of the auxiliary hoisting ropes 310 is connected to the hoisting device 400, and the other end of each of the auxiliary hoisting ropes 310 is connected to the hoisting beam 200. The auxiliary hoisting ropes 310 are used to provide tension to the hoisting beam 200 during the hoisting process.

[0042] like Figure 2 、 5As shown, the four auxiliary lifting ropes 310 are each connected to the main frame 210 of the spreader beam 200. The four connection points between the auxiliary lifting ropes 310 and the spreader beam 200 form a rectangle, with one pair of sides of the rectangle coinciding with one pair of sides of the main frame 210 of the spreader beam 200, and the other pair of sides being parallel to the other pair of sides of the main frame 210 of the spreader beam 200. Specifically, two auxiliary lifting ropes 310 are connected to a first side 211 of the main frame 210, while the other two auxiliary lifting ropes 310 are connected to a second side 212 of the main frame 210 opposite the first side 211. Furthermore, the area of the rectangle is smaller than that of the main frame 210 of the spreader beam 200, and two adjacent auxiliary lifting ropes 310 are symmetrical about the first or second central axis of the main frame 210 of the spreader beam 200 (the first and second central axes being mutually perpendicular central axes of the main frame 210).

[0043] Accordingly, the projection of the connection points of the four auxiliary lifting ropes 310 and the lifting equipment 400 on the plane where the spreader beam 200 is located coincides with the center point of the main frame 210, thereby ensuring that the spreader beam 200 can always remain horizontal during transportation.

[0044] like Figure 4 、 5 As shown, the hanger beam 200 further includes a reinforcing rod 230, the ends of which are respectively fixed to the main frame 210. Specifically, the main frame 210 further has a third side 213 and a fourth side 214 that are perpendicular to the first side 211 and the second side 212, wherein the third side 213 and the fourth side 214 are parallel to each other. Two reinforcing rods 230 are provided, and the two reinforcing rods 230 are arranged in parallel and spaced apart on the main frame 210, and the ends of the two reinforcing rods 230 are respectively connected and fixed to the third side 213 and the fourth side 214 of the main frame 210. The reinforcing rods 230 are used to increase the strength of the main frame 210 and prevent the main frame 210 from being deformed under stress.

[0045] like Figure 3 、 4 As shown in FIG5 , the guide structure 220 is an elbow, the inlet of the elbow is horizontally inward, and the bottom outlet of the elbow is vertically downward. The main hoisting rope 300 enters the elbow from the inlet, changes direction in the elbow, and then extends vertically from the outlet of the elbow, thereby ensuring that the lower section of the main hoisting rope 300 is in a vertical state. In addition, the four main hoisting ropes 300 can slide up and down in the elbow.

[0046] In this embodiment, the four main hoisting ropes 300 are four steel wire ropes of equal length, and the four auxiliary hoisting ropes 310 are four steel wire ropes of equal length.

[0047] The rotary coke drum maintenance hoist in this embodiment can directly lift the drum body 100 without the need for the lifting beam 110, significantly reducing the lifting weight during maintenance and replacement, effectively saving costs and shortening the lifting operation time. The main hoisting rope 300 contacts only the hoisting beam 200, so the horizontal force generated during the lifting process only acts on the hoisting beam 200, without affecting the top of the drum body 100. The hoisting beam 200 is attached to the top of the drum body 100. Because the main hoisting rope 300 is tilted, its horizontal force securely locks the hoisting beam 200 to the top of the drum body 100, ensuring that the hoisting beam 200, drum body 100, and main hoisting rope 300 function as a single unit during the lifting process. Furthermore, the lifting point is improved to be located at the bottom of the drum body 100, eliminating the need for maintenance personnel to climb high to detach the hoisting rope, reducing safety risks during the lifting operation.

[0048] Example 2

[0049] This embodiment discloses a method for lifting a rotary coke drum, using the high-efficiency maintenance hoist for the rotary coke drum in Example 1, and the method is as follows:

[0050] The lifting equipment 400 lifts the sling beam 200 to the top of the coke drum body 100 and keeps the sling beam 200 in a horizontal state;

[0051] The hoisting equipment 400 drives the hoisting beam 200 to move vertically downward, so that the main hoisting rope 300 passes through the gap between the coke drum body 100 and the lifting beam 110;

[0052] Connect the bottom ends of the multiple main hoisting ropes 300 to the multiple lifting points of the coke drum body 100, and overlap the hoisting beam 200 on the top of the coke drum body 100;

[0053] The hoisting equipment 400 drives the hoisting beam 200 and the main hoisting rope 300 to rise, thereby lifting the coke drum body 100.

[0054] Specifically, the crane hook simultaneously hooks the top ends of the four main hoisting ropes 300 and the four auxiliary hoisting ropes 310, thereby lifting the sling beam 200. The four main hoisting ropes 300 and the four auxiliary hoisting ropes 310 are all stretched out, wherein the four auxiliary hoisting ropes 310 are tightened to provide tension for the sling beam 200 and ensure that the sling beam 200 is in a horizontal state; the distance between the hook and the sling beam 200 can be controlled by setting the length of the auxiliary hoisting ropes 310;

[0055] The hook drives the spreader beam 200 to move to the top of the coke drum body 100, and then slowly lowers the spreader. The lower sections of the four main lifting ropes 300 pass through the gap between the coke drum body 100 and the lifting beam, and fall to the four dedicated lifting points set at the bottom of the coke drum body 100 (the four lifting points are located in the same horizontal plane);

[0056] Before the four main hoisting ropes 300 come into contact with the four lifting points, the sling beam 200 first falls to the top of the coke drum body 100, so that the four auxiliary hoisting ropes 310 remain loose and free of stress;

[0057] The bottom ends of the four main lifting ropes 300 are fixedly connected to the four lifting points;

[0058] The hook moves upwards and lifts the coke drum body 100 via the main lifting rope 300;

[0059] During the lifting process, the four auxiliary lifting ropes 310 always remain loose. At the same time, the lifting beam 200 is firmly locked on the top of the coke drum body 100 under the action of the angular component force of the main lifting rope 300. At this time, the lifting beam 200, the main lifting rope 300 and the coke drum body 100 are firmly locked together and are in a relatively stable state.

[0060] The method for hoisting the rotating coke drum in this embodiment can directly lift the drum body 100 without lifting the lifting beam 110, greatly reducing the lifting weight during maintenance and replacement, effectively saving costs, and shortening the lifting operation time. The main hoisting rope 300 only contacts the sling beam 200, and the horizontal component of force generated during the lifting process only acts on the sling beam 200, thereby not affecting the top of the drum body 100. The sling beam 200 is overlapped on the top of the drum body 100. Since the main hoisting rope 300 is set at an angle, its horizontal component of force will firmly lock the sling beam 200 to the top of the drum body 100, thereby ensuring that the sling beam 200, the drum body 100, and the main hoisting rope 300 form a whole during the lifting process, thereby ensuring the stability of the lifting process.

[0061] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A high-efficiency maintenance hoist for a rotary coke drum, comprising a drum body and a lifting beam, wherein the drum body is placed on the lifting beam, characterized in that: Including spreader beam, multiple main lifting ropes, A plurality of guide structures are provided on the hoisting beam, and the top ends of the plurality of main hoisting ropes are connected to the hoisting equipment, and the other ends pass through the corresponding guide structures and extend downward in a vertical state, and pass through the gap between the coke tank body and the lifting beam and are connected to the hoisting point of the coke tank body to lift the coke tank body horizontally.

2. The rotary coke drum high-efficiency maintenance hanger according to claim 1 is characterized in that: The spreader beam is a frame structure, and a plurality of guide structures are evenly spaced along the circumference of the spreader beam. The number of the main lifting ropes is the same as the number of the guide structures, and each main lifting rope passes through its corresponding guide structure.

3. The high-efficiency maintenance hanger for rotary coke drum according to claim 2, characterized in that: The sling beam includes a rectangular main frame, the number of the main lifting ropes and the guide structures is four, and the four guide structures are respectively arranged at the four corners of the main frame.

4. The high-efficiency maintenance hanger for rotary coke drum according to claim 3 is characterized in that: The projections of the connection points of the plurality of main hoisting ropes and the hoisting equipment on the plane where the spreader beam is located coincide with the center point of the main frame of the spreader beam.

5. The high-efficiency maintenance hanger for rotary coke drum according to claim 3 is characterized in that: It also includes four auxiliary lifting ropes, one end of which is connected to the lifting equipment and the other end is connected to the spreader beam.

6. The high-efficiency maintenance hanger for rotary coke drum according to claim 5, characterized in that: The connection points of the four auxiliary lifting ropes and the main frame form a rectangle, one pair of sides of the rectangle coincides with a pair of sides of the main frame, and the other pair of sides is parallel to the other pair of sides of the main frame.

7. The high-efficiency maintenance hanger for rotary coke drum according to claim 6, characterized in that: The projections of the connection points of the plurality of auxiliary lifting ropes and the lifting equipment on the plane where the spreader beam is located coincide with the center point of the main frame.

8. The high-efficiency maintenance hanger for rotary coke drum according to claim 3, characterized in that: The hanger beam further comprises a reinforcing rod, both ends of which are respectively fixed on the main frame.

9. The high-efficiency maintenance hanger for a rotary coke drum according to any one of claims 1 to 8, characterized in that: The guide structure adopts an elbow, and the bottom outlet of the elbow is vertically downward.

10. A method for lifting a rotary coke drum, characterized in that: Using the rotary coke drum efficient maintenance hanger according to any one of claims 1 to 9, the method is as follows: The lifting equipment lifts the spreader beam to the top of the coke drum body and keeps the spreader beam in a horizontal state; The hoisting equipment drives the spreader beam to move vertically downward so that the main hoisting rope passes through the gap between the coke drum body and the lifting beam; Connecting the bottom ends of multiple main hoisting ropes to multiple lifting points of the coke drum body, and lap-connecting the hoisting beam to the top of the coke drum body; The lifting equipment drives the lifting beam and the main lifting rope to rise, thereby lifting the coke drum body.

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