Method for moving soil-covered bullet cans into position

Abstract

The present invention discloses a method for translating a soil-covered bullet tank into position, and belongs to the technical field of tank equipment installation. A temporary pier for temporarily supporting the equipment saddle is set on the ground of a temporary storage area; the soil-covered bullet tank is transported to the temporary storage area, and the equipment saddle is placed on the temporary pier; an auxiliary saddle is installed on the equipment tank body, and two groups of axle vehicles lower the vehicle plate height and drive perpendicularly to the equipment tank body into the bottom of the equipment tank body to connect the auxiliary saddle with the vehicle plate; the vehicle plate height of the axle vehicle is raised, and the two axle vehicles are moved synchronously until the equipment saddle reaches the top of the equipment foundation and is aligned with the equipment foundation and stops; the vehicle plate height is lowered multiple times, and the anchor bolts on the equipment foundation are connected to the equipment saddle; the vehicle plate height is lowered until the vehicle plate is detached from the auxiliary saddle; and the auxiliary saddle is removed. The present invention can complete the equipment placement work using an axle vehicle, and the operation is stable and reliable, with little impact on surrounding construction facilities.

Description

Technical Field

[0001] The invention belongs to the technical field of tank equipment installation, and in particular relates to a method for translating a soil-covered bullet tank into position. Background Art

[0002] Axle-type vehicles are primarily used for transporting heavy, large, tall, and special-shaped structures. They are characterized by their flexibility, ease of loading and unloading, and a load capacity exceeding 50,000 tons when mechanically assembled or freely combined with multiple vehicles. They are widely used in engineering fields such as equipment manufacturing, petroleum, chemical engineering, offshore oil, and bridge construction.

[0003] In the field of chemical equipment installation, the traditional approach to placing heavy equipment in place is to use large cranes. When using large cranes, consideration must be given to the crane's travel and footprint. Construction on buildings within the crane's operating range cannot proceed. If equipment and lifting machinery cannot be brought to the site in advance, the construction period of surrounding buildings (structures) will be extended, severely impacting the project's construction schedule.

[0004] For example, in a petroleum integration project undertaken by the applicant, the propane storage unit of the UO unit contained four large, earth-covered bullet tanks with an inner diameter of 8.4 meters, a length of 50.4 meters, and a net weight of 523.7 tons. Using traditional construction methods, two 700-ton crawler cranes would have been required to lift and place them, rendering the construction of other equipment foundations, the surrounding weirs, and the pipe gallery foundation impossible, and subsequent installation work impossible. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for translating a soil-covered bullet tank into position, so as to achieve the purpose of having little impact on surrounding construction facilities.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A method for translating a soil-covered bullet tank into position, wherein the soil-covered bullet tank comprises a device tank body and a device saddle arranged at the bottom of the device tank body, including:

[0008] Step 1: Set up temporary piers on the ground of the temporary storage area for temporarily supporting the equipment saddle; set up a shim group and a foundation steel plate on the equipment foundation for installing the equipment saddle, and set anchor bolts on the equipment foundation for connecting the equipment saddle;

[0009] Step 2: transport the covered bullet tank to a temporary storage area, place the equipment saddle on a temporary pier in the temporary storage area, and install an auxiliary saddle on the equipment tank body;

[0010] Step 3: Use two sets of axle vehicles to transport a soil-covered bullet tank horizontally. The two sets of axle vehicles lower the height of the vehicle deck and drive vertically into the bottom of the equipment tank body. A load-sharing plate is placed on the vehicle deck of the axle vehicle, and the load-sharing plate is aligned with the auxiliary saddle; the vehicle deck of the axle vehicle is raised to a height so that the load-sharing plate contacts the bottom of the auxiliary saddle, and the auxiliary saddle is connected to the vehicle deck;

[0011] Step 4: Raise the deck of the axle vehicle to separate the equipment saddle from the temporary pier and make the bottom of the equipment saddle higher than the top of the anchor bolt; move the two axle vehicles synchronously until the equipment saddle reaches the top of the equipment foundation and is aligned with the equipment foundation, then stop; lower the deck several times to connect the anchor bolts on the equipment foundation with the equipment saddle; and make the equipment saddle contact with the foundation steel plate;

[0012] Step 5: Continue to lower the vehicle plate until it is separated from the auxiliary saddle; then remove the auxiliary saddle.

[0013] Furthermore, in step one, foundation replacement treatment is carried out at the location where the temporary pier is placed. The thickness of the foundation replacement layer is z=1m, of which the block stone backfill thickness is z2=0.7m. The blocks are paved and compacted with graded crushed stone with a thickness of z1=0.3m. The compacted block stone density is ρ2=1.7t / ㎡, and the graded crushed stone density is ρ1=2.1t / ㎡.

[0014] Furthermore, in step one, a PTFE lining is laid on the upper portion of the base steel plate.

[0015] Furthermore, in step 2, two auxiliary saddles are installed on the body of the covered bullet can, and the auxiliary saddles include an auxiliary saddle body, a steel strap and a rubber. When installing the auxiliary saddle, the rubber is first laid on the body of the covered bullet can where the steel strap is set, and then the steel strap is hoisted and placed on the rubber. After the steel strap is set, the auxiliary saddle body is lifted using a crane, and the auxiliary saddle body and the steel strap are connected with bolts.

[0016] Furthermore, in step four, the height of the vehicle plate of the axle vehicle is lowered, and when the equipment saddle is 50 mm higher than the anchor bolts, the anchor bolts are inserted into the bolt holes of the equipment saddle.

[0017] Furthermore, in step four, after the anchor bolts are installed, the vehicle plate height is lowered again. When the gap between the lower surface of the equipment saddle and the foundation steel plate is 20 mm, the deviation between the longitudinal and transverse center lines of the tank equipment and the foundation is measured; if the requirements are not met, the tank body is fine-tuned longitudinally / transversely to directly meet the requirements; the vehicle plate height is continued to be lowered, and the auxiliary saddle is removed after the equipment saddle contacts the foundation steel plate.

[0018] The present invention utilizes the transport function of the axle vehicle and its own universal wheels to move the plane position of the soil covering bullet tank equipment, and utilizes the hydraulic system of the transport vehicle to lift the vehicle plate height and thus adjust the positioning elevation of the equipment.

[0019] The present invention provides an auxiliary saddle, and does not need to weld a lifting lug on the equipment body, does not damage the equipment, and does not need to use a lifting lock when installing the equipment. The axle car directly bears the weight, which is safer and more reliable than a lifting lock.

[0020] Compared with traditional crane construction, the present invention uses the axle vehicle of the transportation equipment to complete the equipment positioning work. The axle vehicle operates stably and reliably. A temporary storage area is set up outside the construction area, and the formal site occupied when the equipment is in position is small, which has little impact on surrounding construction facilities.

[0021] The present invention is suitable for the placement of large-scale horizontal equipment, the placement of modular devices and the modular construction of pipe corridors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are used to provide further illustration of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 This is a schematic diagram of the transportation of soil-covered bullet canisters to a temporary storage area.

[0024] Figure 2 This is a schematic diagram of the soil-covered bullet canister placed on a temporary pier.

[0025] Figure 3 It is a schematic diagram of the soil-covered bullet tank being moved horizontally toward the installation area.

[0026] Figure 4 This is a schematic diagram of the equipment tank installed on the equipment foundation.

[0027] In the figure, 1-equipment tank, 2-equipment saddle, 3-temporary pier, 4-equipment foundation, 5-auxiliary saddle, 6-axle car, 7-load plate. DETAILED DESCRIPTION

[0028] In order to make those skilled in the art better understand the present invention, the present invention is further clearly and completely described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless there is a conflict, the features in the embodiments and examples of this application can be combined with each other.

[0029] A typical embodiment of the present invention provides a method for translating a soil-covered bullet tank into position. The soil-covered bullet tank includes a device tank body 1 and a device saddle 2 arranged at the bottom of the device tank body 1. The method includes the following steps.

[0030] Step 1: Set up a temporary pier 3 for temporarily supporting the equipment saddle 2 on the ground of the temporary storage area of ​​the covered bullet tank; set up a shim group and a foundation steel plate in sequence on the equipment foundation 4 for installing the equipment saddle 2, and set anchor bolts for connecting the equipment saddle 2 on the equipment foundation 4.

[0031] Step 2: transport the covered bullet tank to a temporary storage area, place the equipment saddle 2 on a temporary pier 3 in the temporary storage area, and install the auxiliary saddle 5 on the equipment tank body 1.

[0032] Step three, use two sets of axle vehicles 6 to transport a soil-covered bullet tank horizontally, and the two sets of axle vehicles 6 lower the height of the vehicle plates and drive vertically into the bottom of the equipment tank body 1. A load-sharing plate 7 is placed on the vehicle plates of the axle vehicles 6, and the load-sharing plate 7 is aligned with the auxiliary saddle 5; lift the vehicle plate height of the axle vehicle 6 so that the load-sharing plate 7 contacts the bottom of the auxiliary saddle 5, and connect the auxiliary saddle 5 to the vehicle plate of the axle vehicle 6.

[0033] Step 4: Raise the car plate height of the axle car 6 to separate the equipment saddle 2 from the temporary pier 3, and make the bottom height of the equipment saddle 2 higher than the top of the anchor bolt; move the two axle cars 6 synchronously until the equipment saddle 2 reaches above the equipment foundation 4 and stops when it is aligned with the equipment foundation 4; lower the car plate height of the axle car 6 several times, connect the anchor bolts on the equipment foundation 4 with the equipment saddle 2; and make the equipment saddle 2 contact with the foundation steel plate, so that the equipment tank body 1 is installed on the equipment foundation 4.

[0034] Step 5: Continue to lower the vehicle plate height of the axle vehicle 6 until the vehicle plate is separated from the auxiliary saddle 5; and remove the auxiliary saddle 5.

[0035] The technical solution claimed in the present invention will be further clearly and completely described below with reference to a relatively specific embodiment.

[0036] In a certain project, the propane storage unit has four large earth-covered bullet tanks, each with an inner diameter of 8.4 meters, a length of 50.4 meters, and a net weight of 523.7 tons.

[0037] (1) Select the number of axle vehicles and the assembly method

[0038] The number of axle car 6 groups and their assembly method were selected based on the equipment size and weight, the weight of the auxiliary equipment locking devices, and the performance of axle car 6. The net weight of the soil-covered bullet tank was 532.7 tons, and the weight of the auxiliary equipment locking devices was 24.3 tons. This meant that the load carried by axle car 6 during transportation, translation, and positioning was 557 tons. Based on the performance of axle car 6, four K2400ST 5-axle groups and four 6-axle groups were selected. During transportation, the assembly method was two rows (6 axle + 5 axle + 5 axle + 6 axle) per row; during translation and positioning, the assembly method was four rows (6 axle + 5 axle) per row. The load on the bogie bearing the greatest load was calculated to be 42.5% of the rated load, meeting the requirements.

[0039] (2) Design and production of auxiliary saddles and temporary buttresses

[0040] Two auxiliary saddles 5 are made of Q235A material with a load-bearing capacity of more than 350t / piece. Binding points and lifting points are set on both sides of the auxiliary saddle 5, and the strength is not less than 20t.

[0041] Determining the height of temporary buttress 3: The normal height of axle car 6 is 1500mm, with a lifting range of ±300mm. Considering a 100mm margin, the height range of temporary buttress 3 is 1300mm to 1700mm. A 200mm thick load-bearing plate 7 is laid on the deck of axle car 6, so the height of temporary buttress 3 is determined to be 1500mm.

[0042] The number of temporary piers 3 is determined: each soil-covered bullet tank has a total of 4 equipment saddles 2, and each equipment saddle 2 is provided with two temporary piers 3, for a total of 8 temporary piers 3.

[0043] (3) Foundation treatment

[0044] Foundation treatment at the temporary pier placement site

[0045] According to the foundation investigation report and actual on-site investigation, the bearing capacity of the unexcavated original soil layer is 13 tons / ㎡. During storage, each piece of equipment is supported by eight temporary piers 3. The base plate specifications of the temporary piers 3 are 1.6m x 2.5m, and the pressure exerted by each temporary pier 3 on the ground is 20.4 tons / ㎡.

[0046] If the original natural ground cannot meet the storage requirements, the original foundation needs to be replaced.

[0047] The treatment solution provided in this embodiment is: the thickness of the foundation replacement layer at the position of the temporary pier 3 is z=1m, of which the block stone backfill thickness is z2=0.7m, and the block stones are paved and compacted with graded crushed stones with a thickness of z1=0.3m. The compacted block stone density is ρ2=1.7t / ㎡, and the graded crushed stone density is ρ1=2.1t / ㎡.

[0048] Foundation treatment of temporary storage area and translation area

[0049] The temporary storage area and the transition area between the four equipment foundations must be flat, with a height difference of no more than 50mm from the foundation plane. The ground strength of other locations in the temporary storage area and the transportation channel (including the transition road surface between the four equipment foundations) must be greater than 10t / m 2 The treatment plan is: compact the original soil layer to a compaction degree of ≥95%; lay a 200mm thick layer of sand and gravel mixture (maximum particle size of 20mm) with a compaction degree of ≥95%; lay a crushed stone, gravel, and sand mixture (particle size of 0-40mm) with a compaction degree of ≥97%; lay a 150mm thick layer of sand and gravel mixture mixed with 7% Portland cement with a compaction degree of ≥97%.

[0050] (IV) Equipment unloading arrangement

[0051] The temporary storage area is on the north side of the installation area. The equipment numbers in the installation area are A, B, C, and D from north to south; the equipment in the storage area are A, B, C, and D from north to south; because the entrance position of the storage area is on the same line as the equipment C in the storage area, the order of equipment entry and unloading is A, B, D, and C; the order during installation is D, C, B, and A.

[0052] (V) Equipment foundation acceptance and processing

[0053] The surface of the equipment foundation 4 should be trimmed and all oil, gravel, dirt, and accumulated water in the reserved holes for the anchor bolts should be cleaned. The surface of the equipment foundation 4 should be leveled from the area where the shims are placed to within 50 mm of the area around it. The allowable horizontal deviation of the leveled area is 2 mm / m. The area outside the shims should be pitted, with 3 to 5 pits with a depth of at least 10 mm within an area of ​​100 mm x 100 mm.

[0054] Before the soil covering bullet tank equipment is put into place, the shim group is set up, the shim group is set at the reinforcement position of the equipment saddle 2, and is initially leveled.

[0055] Use flat or inclined washers for leveling, with the following requirements: the surface of the concrete equipment foundation 4 where the washers are placed should be leveled, and its size should be 50mm larger than each side of the washers; use pairs of inclined washers, with the inclined surfaces facing each other, and set flat washers underneath the inclined washers.

[0056] Each set of shims should not exceed five pieces. When placing flat shims, the thickest should be placed at the bottom and the thinnest in the middle. Each set of shims should be placed neatly and stably with good contact. Clean any oil or other dirt on the surface of the shims.

[0057] Installation of foundation steel plate and anchor bolts

[0058] After the shims are set and initially leveled, the foundation steel plate is hoisted onto the shims and then leveled again. Once the foundation steel plate is leveled, the anchor bolts are placed in the reserved anchor bolt holes. The PTFE liner installed between the foundation steel plate and equipment saddle 2 is placed on the foundation steel plate.

[0059] (6) Axis vehicle assembly

[0060] After all four bullet tanks arrived and were unloaded, the axle car 6 was modified. During transportation, the assembly method was double-row, (6 axles + 5 axles + 5 axles + 6 axles) / row; when translated into place, the assembly method was modified to four rows, (6 axles + 5 axles) / row.

[0061] (7) Auxiliary saddle installation

[0062] The auxiliary saddle 5 consists of a saddle, steel straps, and rubber. First, the rubber is placed on the equipment body where the steel straps are installed. Then, the steel straps are hoisted and placed on top of the rubber. Avoid placing the steel straps directly on the equipment body to prevent damage to the paint. After the steel straps are installed, use two cranes to lift the saddle. Align the bolt holes on the saddle with those on the steel straps, and then bolt them together.

[0063] (VIII) Equipment translation, equipment initial adjustment, movable anchor bolts installed on equipment saddle 2

[0064] Two axle trucks (6) lower the deck, driving perpendicular to the tank body and into the bottom, aligning them with the auxiliary saddle (5). Simultaneously, slowly raise the deck until the load-carrying plate (7) on the deck contacts the bottom of the auxiliary saddle (5). Use wire rope and a hand hoist to connect the auxiliary saddle (5) lifting lugs to the deck lashing points and tighten. Simultaneously, slowly raise the deck again to separate the equipment saddle (2) from the temporary support.

[0065] When the soil-covering bullet tank equipment is translated, the axis vehicle 6 is slowly and synchronously moved, and the equipment saddle 2 is aligned with the equipment foundation 4 by relying on the longitudinal / lateral movement of the axis vehicle 6. The height of the equipment saddle 2 is higher than the top of the anchor bolt. Move the vehicle along the installation channel until it reaches the installation position of the equipment foundation 4 and stops.

[0066] Fine-tune the longitudinal / lateral position of the equipment saddle 2 to align with the equipment foundation 4. Lower the height of the vehicle plate. When the equipment saddle 2 is 50mm higher than the anchor bolt, insert the screw of the anchor bolt into the bolt hole of the equipment saddle 2 and install the washer and nut on the screw.

[0067] After the anchor bolts are installed, lower the platform again. When the gap between the lower surface of the equipment saddle 2 and the foundation steel plate is 20 mm, measure the deviation between the equipment's longitudinal and transverse centerlines and the foundation. If this does not meet the requirements, continue to fine-tune the tank longitudinally and transversely until it meets the requirements.

[0068] The hydraulic jacking device of axle vehicle 6 is located on one side of the tire. When the jacking device descends, it will drive the vehicle plate to deflect to one side, so before descending, a margin for deviation should be reserved in the opposite direction.

[0069] Continue to lower the car plate height, so that the equipment saddle 2 contacts the basic steel plate, and then remove the lashing wire rope reinforced by the auxiliary saddle 5. After removing the wire rope, continue to lower the car plate height until the car plate is separated from the auxiliary saddle 5.

[0070] The equipment installation accuracy is retested. If the requirements are met, the transport vehicle leaves the foundation area.

[0071] (9) Removal of auxiliary saddle

[0072] Use a truck crane to dismantle the auxiliary saddle 5 and place it on the rollers on the ground, and then use a forklift to drag the auxiliary saddle 5 out of the bottom of the equipment tank 1.

[0073] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various variations and modifications. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for translating a soil-covered bullet tank into position, wherein the soil-covered bullet tank comprises a device tank body and a device saddle arranged at the bottom of the device tank body, characterized in that: include: Step 1: Set up temporary piers on the ground of the temporary storage area to temporarily support the equipment saddle; On the equipment foundation for installing the equipment saddle, a shim group and a foundation steel plate are sequentially arranged, and anchor bolts for connecting the equipment saddle are arranged on the equipment foundation; The temporary piers are placed where the foundation is replaced. The thickness of the foundation replacement layer is z = 1m, of which the stone backfill thickness is z2 = 0.7m. The stone blocks are paved and compacted with graded crushed stone with a thickness of z1 = 0.3m. The compacted stone density is ρ2 = 1.7t / ㎡, and the graded crushed stone density is ρ1 = 2.1t / ㎡. Step 2: transport the covered bullet tank to a temporary storage area, place the equipment saddle on a temporary pier in the temporary storage area, and install an auxiliary saddle on the equipment tank body; Two auxiliary saddles are installed on the body of the earth-covered bullet can. The auxiliary saddles include an auxiliary saddle body, a steel strap, and a rubber. When installing the auxiliary saddles, the rubber is first laid on the body of the earth-covered bullet can where the steel strap is set, and then the steel strap is hoisted and placed on the rubber. After the steel strap is set, the auxiliary saddle body is hoisted using a crane, and the auxiliary saddle body and the steel strap are connected with bolts. Step 3: Use two sets of axle vehicles to transport a soil-covered bullet tank horizontally. The two sets of axle vehicles lower the height of the vehicle deck and drive vertically into the bottom of the equipment tank body. A load-sharing plate is placed on the vehicle deck of the axle vehicle, and the load-sharing plate is aligned with the auxiliary saddle; the vehicle deck of the axle vehicle is raised to a height so that the load-sharing plate contacts the bottom of the auxiliary saddle, and the auxiliary saddle is connected to the vehicle deck; Step 4: Raise the deck of the axle vehicle to separate the equipment saddle from the temporary pier and make the bottom of the equipment saddle higher than the top of the anchor bolt; move the two axle vehicles synchronously until the equipment saddle reaches the top of the equipment foundation and is aligned with the equipment foundation, then stop; lower the deck several times to connect the anchor bolts on the equipment foundation with the equipment saddle; and make the equipment saddle contact with the foundation steel plate; Step 5: Continue to lower the vehicle plate until it is separated from the auxiliary saddle; then remove the auxiliary saddle.

2. The method for translating a soil-covered bullet tank into position according to claim 1, characterized in that: In step 1, a PTFE liner is laid on the upper portion of the base steel plate.

3. The method for translating a soil-covered bullet tank into position according to claim 1 or 2, characterized in that: In step 4, lower the height of the axle car's car plate. When the equipment saddle is 50mm higher than the anchor bolts, install the anchor bolts into the bolt holes of the equipment saddle.

4. The method for translating a soil-covered bullet tank into position according to claim 3, characterized in that: In step 4, after the anchor bolts are installed, lower the vehicle plate height again. When the gap between the lower surface of the equipment saddle and the foundation steel plate is 20 mm, measure the deviation between the longitudinal and transverse center lines of the tank equipment and the foundation. If it does not meet the requirements, fine-tune the tank longitudinally / transversely to meet the requirements directly. Continue to lower the vehicle plate height, and remove the auxiliary saddle after the equipment saddle contacts the foundation steel plate.

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