A method of installing a device in place in a confined space

Abstract

The application discloses a device installation method in a narrow space, which comprises the following steps: first, a translation tool is made and installed between a factory cofferdam and a device foundation; second, wood blocks are stacked outside the cofferdam, a steel plate is laid on the wood blocks, and a rolling bar is laid on the surface of the steel plate; third, a crane is used to hoist the device to the outside of the cofferdam and place the front end of the device on the rolling bar; fourth, a chain cable is fixed on a factory column, a sling is tied on the device, the chain cable and the sling are connected by a chain, and the crane and the chain are cooperated to pull the device forward; and fifth, when the front end of the device advances to the edge of the translation tool, the device is pulled forward by the chain, the bottom of the device is supported by the rolling bar and a ground tank, the device is lifted by a measuring jack when the device completely advances to the target device foundation, the rolling bar and the ground tank are removed, foundation bolts are installed, and the device installation is completed. The application can efficiently and one-time install the device in the narrow space, and reduces the influence of late arrival of the device on the construction progress.

Description

Technical Field

[0001] This invention belongs to the field of petrochemical equipment installation technology, and more specifically, relates to a method for installing and positioning equipment in a confined space. Background Technology

[0002] In petrochemical construction projects, due to construction process issues, some equipment arrives late and cannot be pre-installed. Installation can only begin after the cofferdam, walls, and even the roof of the plant are completed. In such confined spaces, it's impossible to use cranes to install the equipment all at once. Current technology typically employs modular disassembly followed by segmented hoisting, but this method is complex and time-consuming. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for installing and positioning equipment in a narrow space, so as to improve the installation efficiency of equipment.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a method for installing and positioning equipment in a narrow space, comprising: Step 1: Fabricate a translation fixture, which includes a horizontal support frame and short columns fixed to the bottom of the horizontal support frame. Install the translation fixture between the factory building cofferdam and the equipment foundation. Step 2: Stack timber on the outside of the cofferdam, lay steel plates on top of the timber, and lay rollers on the surface of the steel plates; Step 3: Connect the inner and outer wire ropes to the crane hook. The inner and outer wire ropes are located on the inner and outer sides of the factory wall and connected to both sides of the equipment. Use the crane to lift the equipment to the outside of the cofferdam. When the front end of the equipment has passed 1 / 2 of the timber, lower the hook and place the front end of the equipment on the roller. Step 4: Secure the chain hoist wire rope to the factory building pillars, tie the slings to the equipment, connect the chain hoist wire rope and slings with the chain hoist, and the crane and chain hoist work together to pull the equipment forward; Step 5: When the equipment has passed the inner edge of the timber at 2 / 3 of its length, remove the outer steel wire rope of the crane, leaving the inner steel wire rope to cooperate with the chain hoist to move forward; Step 6: When the front end of the equipment moves forward and passes the edge of the translation fixture, remove the inner steel wire rope and let the equipment move forward by the chain hoist. The bottom of the equipment is supported by rollers and ground tanks. Step 7: Once the equipment has fully moved to the target equipment foundation, re-measure and adjust the equipment center and bolt hole spacing. Use a measuring jack to lift the equipment, remove the rollers and ground tank, and install the anchor bolts to complete the equipment installation.

[0005] In a preferred embodiment, in step one, the horizontal support frame of the translation fixture includes a main beam, an intermediate connecting beam, and small secondary beams; the main beam is welded into a rectangular frame, the intermediate connecting beam is fixed in parallel between the two main beams on both sides, and multiple small secondary beams are fixed between adjacent intermediate connecting beams.

[0006] In a preferred embodiment, the main beam is made of HM150*100 H-beam with a length of 2200mm; the short column is made of HW200*200 H-beam with a length of 600mm; the intermediate connecting beam is made of HW100*100 H-beam with a length of 4500mm; and the secondary beam is made of HW100*100 H-beam with a length of 1050mm.

[0007] In a preferred embodiment, in step two, the overall dimensions of the stacked timber are 4m × 4m × 0.6m, and the steel plate is 20mm thick.

[0008] As a preferred embodiment, in step three, both the inner and outer wire ropes are secured to the lifting lugs of the equipment with shackles, and a trial lift is performed for 3 minutes before the formal lifting.

[0009] In a preferred embodiment, in step four, the crane and chain hoist work together to pull the equipment forward until the outer wire rope is 4-5 cm away from the factory wall, then stop. The crane slowly lowers its hook to ensure that the outer wire rope of the crane does not get stuck on the factory wall, and then the chain hoist continues to pull the equipment forward.

[0010] In a preferred embodiment, in step six, when the front end of the equipment moves forward and passes the edge of the translation fixture, ground tanks are installed on both sides of the bottom of the front end of the equipment, the inner steel wire rope is removed, and the equipment is pulled forward by a chain hoist to the edge of the equipment foundation. The ground tanks are removed by using side jacks to lift the equipment and replace them with rollers, and the equipment continues to move forward. When the equipment passes the edge of the translation fixture at 1 / 2 of its length, the rollers at the bottom of the rear side of the equipment are removed by using side jacks and replaced with ground tanks.

[0011] As a preferred embodiment, when installing multiple devices, the aforementioned translation fixture is installed between adjacent device foundations.

[0012] This invention sets up stacked timber and translation fixtures as a support platform for equipment translation. By using a crane and chain hoist to move the equipment to the equipment foundation, the equipment can be efficiently installed in one go in a narrow space, reducing the impact of late equipment delivery on the construction schedule. Attached Figure Description

[0013] The accompanying drawings, which are provided to further illustrate the invention and form part of this application, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0014] Figure 1This is a schematic diagram of the arrangement of the translation tooling described in this invention; Figure 2 This is a schematic diagram of the front end of the equipment falling onto the roller; Figure 3 This is a schematic diagram of the equipment being moved to the translation fixture; Figure 4 This is a schematic diagram of the equipment being moved onto the equipment foundation.

[0015] In the diagram, 1-equipment, 2-transfer fixture, 3-cofferdam, 4-equipment foundation, 5-timber, 6-roller, 7-crane, 8-inner wire rope, 9-outer wire rope, 10-chain hoist wire rope, 11-sling, 12-chain hoist, 13-ground tank, 14-side jack, 15-factory wall. Detailed Implementation

[0016] A typical embodiment of the present invention provides a method for installing and positioning equipment in a narrow space, in which a 32t-ton device is installed inside the factory after the cofferdam and walls of the factory have been constructed.

[0017] 1. Fabrication of translation fixtures Fabricate the translation fixture in advance and install it between the plant cofferdam and the equipment foundation. If multiple pieces of equipment are to be installed inside the plant, also install the aforementioned translation fixture between adjacent equipment foundations.

[0018] In a preferred embodiment, the translation fixture includes a horizontal support frame and short columns fixed to the bottom of the horizontal support frame. The horizontal support frame of the translation fixture includes main beams, intermediate connecting beams, and small secondary beams; the main beams are welded into a rectangular frame, the intermediate connecting beams are fixed parallel to each other between the two main beams on both sides, and multiple small secondary beams are fixed between adjacent intermediate connecting beams.

[0019] For example, the translation fixture is mainly made of H-beams, wherein the main beam is made of HM150*100 H-beams with a length of 2200mm; the short column is made of HW200*200 H-beams with a length of 600mm; the intermediate connecting beam is made of HW100*100 H-beams with a length of 4500mm; and the small secondary beam is made of HW100*100 H-beams with a length of 1050mm.

[0020] During fabrication, it is necessary to ensure the overall verticality and top parallelism of the translation tool so that it can be smoothly installed between the cofferdam and the equipment.

[0021] 2. Temporary support arrangement Timber was stacked on the outside of the cofferdam, steel plates were laid on top of the timber, and rollers were laid on the surface of the steel plates.

[0022] For example, 2000*200*200mm timber is neatly stacked on the outside of the cofferdam, with an overall size of 4m*4m*0.6m. A 20mm thick steel plate is laid on top of the timber, and the soil at the bottom of the timber needs to be compacted and leveled. Ten Φ108*6mm rollers are laid on the upper side of the steel plate.

[0023] 3. Crane lifting Connect the inner and outer wire ropes to the crane hook. The inner and outer wire ropes are respectively located on the inner and outer sides of the factory wall and connected to both sides of the equipment. Use the crane to lift the equipment to the outside of the cofferdam. When the front end of the equipment has passed 1 / 2 of the timber, lower the hook and place the front end of the equipment on the roller.

[0024] For example, the crane selected is the XCMG XCT100 truck crane (other cranes are determined according to the specific equipment weight, working radius, etc.), and the inner and outer wire rope specifications are 6*37FCΦ30mm.

[0025] Beforehand, prepare the crane according to the working radius and lifting height. Secure the inner and outer wire ropes to the lifting lugs of the equipment with shackles and lift slowly. Perform a trial lift for 3 minutes before the formal lift.

[0026] 4. Chain hoist traction translation Secure the chain hoist wire rope to the factory building pillars, tie the slings to the equipment, connect the chain hoist wire rope and slings with the chain hoist, and the crane and chain hoist work together to pull the equipment forward.

[0027] For example, a Φ28mm steel wire rope is reliably tied to a column behind the equipment in the factory building in advance, and then reliably tied to the equipment with two 10-ton slings. A 20-ton chain hoist is used to connect the steel wire rope and the slings.

[0028] 5. Chain hoist and crane work together to pull and move horizontally. A 20-ton chain hoist, in conjunction with Φ108*6mm rollers, slowly pulls the equipment forward until the outer wire rope of the crane is 4-5cm away from the factory wall. Then, the crane, in conjunction with the chain hoist, gently lowers the hook, but not completely, ensuring that the outer wire rope of the crane does not get stuck in the wall, and then continues to pull the chain hoist to move the equipment forward.

[0029] When the equipment has passed the inner edge of the timber at 2 / 3 of its length, remove the outer wire rope of the crane, leaving the inner wire rope to cooperate with the chain hoist to move forward.

[0030] 6. The ground tank and rollers work together to move horizontally. When the front end of the equipment moves forward and passes the edge of the translation fixture, the inner steel wire rope is removed, and the equipment is pulled forward by the chain hoist. The bottom of the equipment is supported by rollers and ground tanks.

[0031] For example, when the front end of the equipment advances to 300mm past the rear edge of the translation fixture, ground tanks (CRB36 straight ground tanks) are installed on both sides of the bottom of the front end of the equipment. The inner steel wire rope is removed, and the equipment is pulled forward by a chain hoist to the edge of the equipment foundation. Φ108*6mm rollers are laid on the equipment foundation in advance. The equipment is lifted by side jacks to remove the ground tanks and replace them with rollers. The equipment is then pulled forward. When the equipment has passed the rear edge of the translation fixture at 1 / 2 of its length, two 20-ton side jacks are used to lift the equipment to remove the rollers at the bottom of the rear side of the equipment and replace them with ground tanks.

[0032] 7. Equipment in place Once the equipment has fully moved to the target equipment foundation, re-measure and adjust the equipment center and bolt hole spacing. Use two 20-ton jacks to lift the equipment, remove the rollers and ground tanks, and install the anchor bolts to complete the equipment installation.

[0033] The scope of protection claimed by this invention is not limited to the specific embodiments described above. For those skilled in the art, this invention can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for installing and positioning equipment in a confined space, characterized in that, include: Step 1: Fabricate a translation fixture, which includes a horizontal support frame and short columns fixed to the bottom of the horizontal support frame. Install the translation fixture between the factory building cofferdam and the equipment foundation. Step 2: Stack timber on the outside of the cofferdam, lay steel plates on top of the timber, and lay rollers on the surface of the steel plates; Step 3: Connect the inner and outer wire ropes to the crane hook. The inner and outer wire ropes are located on the inner and outer sides of the factory wall and connected to both sides of the equipment. Use the crane to lift the equipment to the outside of the cofferdam. When the front end of the equipment has passed 1 / 2 of the timber, lower the hook and place the front end of the equipment on the roller. Step 4: Secure the chain hoist wire rope to the factory building pillars, tie the slings to the equipment, connect the chain hoist wire rope and slings with the chain hoist, and the crane and chain hoist work together to pull the equipment forward; Step 5: When the equipment has passed the inner edge of the timber at 2 / 3 of its length, remove the outer steel wire rope of the crane, leaving the inner steel wire rope to cooperate with the chain hoist to move forward; Step 6: When the front end of the equipment moves forward and passes the edge of the translation fixture, remove the inner steel wire rope and let the equipment move forward by the chain hoist. The bottom of the equipment is supported by rollers and ground tanks. Step 7: Once the equipment has fully moved to the target equipment foundation, re-measure and adjust the equipment center and bolt hole spacing. Use a measuring jack to lift the equipment, remove the rollers and ground tank, and install the anchor bolts to complete the equipment installation.

2. The method for installing and positioning equipment in a narrow space according to claim 1, characterized in that: In step one, the horizontal support frame of the translation fixture includes a main beam, an intermediate connecting beam, and small secondary beams; the main beam is welded into a rectangular frame, the intermediate connecting beam is fixed in parallel between the two main beams on both sides, and multiple small secondary beams are fixed between adjacent intermediate connecting beams.

3. The method for installing and positioning equipment in a narrow space according to claim 2, characterized in that: The main beams are made of HM150*100 H-beams with a length of 2200mm; the short columns are made of HW200*200 H-beams with a length of 600mm; the intermediate connecting beams are made of HW100*100 H-beams with a length of 4500mm; and the secondary beams are made of HW100*100 H-beams with a length of 1050mm.

4. The method for installing and positioning equipment in a narrow space according to claim 1 or 3, characterized in that: In step two, the overall dimensions of the stacked timber are 4m×4m×0.6m, and the steel plate is 20mm thick.

5. The method for installing and positioning equipment in a narrow space according to claim 4, characterized in that: In step three, both the inner and outer wire ropes are secured to the lifting lugs of the equipment with shackles. A trial lift is performed for 3 minutes before the actual lifting.

6. The method for installing and positioning equipment in a narrow space according to claim 5, characterized in that: In step four, the crane and chain hoist work together to pull the equipment forward until the outer wire rope is 4-5cm away from the factory wall. Then, the crane slowly lowers its hook to ensure that the outer wire rope of the crane does not get stuck on the factory wall. Then, the chain hoist is pulled to move the equipment forward.

7. The method for installing and positioning equipment in a narrow space according to claim 1 or 6, characterized in that: In step six, when the front end of the equipment moves forward and passes the edge of the translation fixture, install ground tanks on both sides of the bottom of the front end of the equipment, remove the inner steel wire rope, and use a chain hoist to pull the equipment forward to the edge of the equipment foundation. Use side jacks to lift the equipment, remove the ground tanks and replace them with rollers, and continue to pull the equipment forward. When the equipment has passed the edge of the translation fixture at 1 / 2 of its length, use side jacks to lift the equipment, remove the rollers at the bottom of the rear side of the equipment and replace them with ground tanks.

8. The method for installing and positioning equipment in a narrow space according to claim 7, characterized in that: When installing multiple devices, the aforementioned translation fixture is installed between adjacent device foundations.

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