A modular installation method for heat recovery coke oven pipe truss

Abstract

The present invention is a modular installation method for a heat recovery coke oven pipe truss; the method includes assembling two single trusses on both sides of the bottom of the steel structure truss on the ground; hoisting them into place on the +15m platform; installing the bottom crossbeam of the +16m elevation truss; installing the +21m elevation crossbeam at intervals; installing the high-temperature flue gas duct and completing the remaining crossbeam at +21m; installing the crossbeam at +24m at intervals; installing the low-temperature flue gas duct; completing the remaining crossbeam at +24m and the remaining crossbeam rods; after the two single trusses and their connecting rods and pipes are installed, hoisting the entire truss onto a square bracket that has been aligned on the ground. This method significantly saves time on the installation of flue gas ducts and trusses between heat recovery coke oven platforms and from the coke oven platform to the external pipe gallery truss. Modular installation saves 1 / 3 of the work period compared to traditional installation methods, and the machinery and labor are 1 / 4 of the traditional method. At the same time, it significantly reduces the time for dangerous high-altitude operations.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical blast furnace construction, in particular to a modular installation method for a heat recovery coke oven pipeline truss. Background Art

[0002] Due to its process characteristics, the layout of heat recovery coke ovens is relatively compact. The space between each coke oven and between the oven body and the external pipe gallery truss is narrow, with a spacing of about 30m. In addition, large trusses and pipes are arranged between the platforms and between the platforms and the external pipe gallery trusses. The elevation of the trusses and pipes ranges from +15m to +36m and weighs about 240t. During construction, cross-operation with other professional operations is required. The traditional method is to hoist the bottom truss of the high-temperature flue gas duct area as a whole. After the hoisting of the bottom truss is completed, the pipe threading operation is carried out. After the pipeline is installed, the upper truss components are individually hoisted. Using this method to operate multiple coke ovens has the problems of low efficiency and long construction period. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects and propose a modular installation method for a heat recovery coke oven pipe truss, thereby improving construction efficiency and shortening construction period.

[0004] In order to achieve the above object, the present invention is achieved as follows:

[0005] A modular installation method for heat recovery coke oven pipe trusses, comprising:

[0006] Step 1: Assemble the two single trusses (1-1, 1-2) on both sides of the bottom of the steel structure truss on the ground;

[0007] Step 2: Hoist the single truss (1-1) to the platform at +15m elevation and secure it with temporary guy ropes;

[0008] Step 3: Hoist the single truss (1-2) to the platform at +15m elevation and secure it with temporary guy ropes;

[0009] Step 4: Install the bottom crossbeam (2) of the +16m elevation truss.

[0010] Step 5: After the installation of the bottom cross beam (2) of the +16m elevation truss is completed, install the cross beam (3) of the +21m elevation at intervals;

[0011] Step 6: Install the high-temperature flue gas duct (7) in 3 to 4 sections. After all the ducts are installed, fill in the remaining beams (3) at the +21m elevation.

[0012] Step 7: Install the beams (4) at the +24m elevation at intervals.

[0013] Step 8: Install the low-temperature flue gas duct (8) in 3 to 4 sections; after all the ducts are installed in place, fill in the remaining crossbeam (4) and other crossbeam members at the +24m elevation;

[0014] Step 9: After the two single trusses (1-1, 1-2) and their connecting rods and pipes are installed, they are hoisted as a whole on the square bracket (6) assembled on the ground; the installation of the entire truss and pipes is completed.

[0015] The modular installation method of the heat recovery coke oven pipe truss proposed in the present invention greatly saves the installation time of the flue gas ducts and trusses between the heat recovery coke oven platforms and from the coke oven platforms to the external pipe gallery trusses. The modular installation saves 1 / 3 of the construction period compared with the traditional installation method, and the machinery and labor are 1 / 4 of the traditional method. At the same time, the time of dangerous high-altitude operations is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the modular construction method proposed by the present invention Figure 1 .

[0017] Figure 2 This is a schematic diagram of the modular installation method proposed by the present invention Figure 2 . DETAILED DESCRIPTION

[0018] The present invention is further illustrated below by means of specific examples.

[0019] like Figure 1 、 Figure 2 As shown, a modular installation method for heat recovery coke oven pipe trusses includes:

[0020] Step 1: Assemble the two single trusses (1-1, 1-2) on both sides of the bottom of the steel structure truss on the ground;

[0021] Step 2: Hoist the single truss (1-1) to the platform at +15m elevation and secure it with temporary guy ropes;

[0022] Step 3: Hoist the single truss (1-2) to the platform at +15m elevation and secure it with temporary guy ropes;

[0023] Step 4: Install the bottom crossbeam (2) of the +16m elevation truss.

[0024] Step 5: After the installation of the bottom cross beam (2) of the +16m elevation truss is completed, install the cross beam (3) of the +21m elevation at intervals;

[0025] Step 6: Install the high-temperature flue gas duct (7) in 3 to 4 sections. After all the ducts are installed, fill in the remaining beams (3) at the +21m elevation.

[0026] Step 7: Install the beams (4) at the +24m elevation at intervals.

[0027] Step 8: Install the low-temperature flue gas duct (8) in 3 to 4 sections; after all the ducts are installed in place, fill in the remaining crossbeam (4) and other crossbeam members at the +24m elevation;

[0028] Step 9: After the two single trusses (1-1, 1-2) and their connecting rods and pipes are installed, they are hoisted as a whole on the square bracket (6) assembled on the ground; the installation of the entire truss and pipes is completed.

[0029] The modular installation method of the heat recovery coke oven pipe truss proposed in the present invention utilizes limited space to reasonably insert the truss from bottom to top and the order of pipe insertion in the truss. First, two single trusses are installed, and then all beams for installing the bottom support of the high-temperature flue gas pipe are installed. The upper beams of the high-temperature flue gas pipe (i.e., the bottom support beams of the low-temperature flue gas pipe) are installed at intervals to install the high-temperature flue gas pipe. After the high-temperature flue gas pipe is installed, the remaining upper beams of the high-temperature flue gas pipe (i.e., the bottom support beams of the low-temperature flue gas pipe) are supplemented, and the upper beams of the low-temperature flue gas pipe are installed at intervals to install the low-temperature flue gas pipe. After the low-temperature flue gas pipe is installed, the remaining upper beams and remaining rods are supplemented, and finally the square bracket on the top of the truss is installed as a whole.

[0030] There is a significant saving in the installation time of the flue gas ducts and trusses between the heat recovery coke oven platforms and from the coke oven platforms to the external pipe gallery trusses. Modular installation saves 1 / 3 of the construction period compared with the traditional installation method, and the machinery and labor are 1 / 4 of the traditional method. At the same time, the time for dangerous high-altitude operations is greatly reduced.

Claims

1. A modular installation method for heat recovery coke oven pipe trusses, characterized by: include Step 1: Assemble the two single trusses (1-1, 1-2) on both sides of the bottom of the steel structure truss on the ground; Step 2: Hoist the single truss (1-1) to the platform at +15m elevation and secure it with temporary guy ropes; Step 3: Hoist the single truss (1-2) to the platform at +15m elevation and secure it with temporary guy ropes; Step 4: Install the bottom crossbeam (2) of the +16m elevation truss. Step 5: After the installation of the bottom cross beam (2) of the +16m elevation truss is completed, install the cross beam (3) of the +21m elevation at intervals; Step 6: Install the high-temperature flue gas duct (7) in 3 to 4 sections. After all the ducts are installed, fill in the remaining beams (3) at the +21m elevation. Step 7: Install the beams (4) at the +24m elevation at intervals. Step 8: Install the low-temperature flue gas duct (8) in 3 to 4 sections; after all the ducts are installed in place, fill in the remaining crossbeam (4) and other crossbeam members at the +24m elevation; Step 9: After the two single trusses (1-1, 1-2) and their connecting rods and pipes are installed, they are hoisted as a whole on the square bracket (6) assembled on the ground; the installation of the entire truss and pipes is completed.

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