Installation and construction method for transformer tower type equipment

Abstract

The invention discloses a transformer tower type equipment installation construction method which comprises the following steps: horizontally placing transformer tower type equipment on a saddle, installing a rubber pad on the outer surface of the transformer tower type equipment, then fixing a hoop type lifting lug on the outer side of the rubber pad, and completing the installation of the hoop type lifting lug through a bolt installed in a bolt hole of a lug plate; then the main crane is responsible for main hoisting of the equipment, and the auxiliary crane is responsible for tail sliding delivery and is matched with the main crane to complete hoisting operation of the transformer tower equipment; after the hoisting operation is completed, the hoop type lifting lugs are dismounted; and after the hoop type lifting lugs are removed, an accessory structure is arranged for modular installation, and finally equipment alignment and equipment grouting are conducted. On the premise that the equipment body is not damaged, the hoisting safety is greatly improved, the construction cost can be effectively reduced, the construction progress is accelerated, and the construction quality is guaranteed. And the equipment accessory structure and the equipment body adopt the flexible base plate for transition, so that the local stress influence is effectively avoided.

Description

Technical Field

[0001] The invention relates to the field of petrochemical equipment installation, in particular to an installation construction method for transformer tower equipment. Background Art

[0002] Usually, in order to facilitate the lifting of tower equipment, lifting ears are set at appropriate positions on the equipment body. Tubular lifting ears are set on both sides of the upper half of the equipment, and plate lifting ears are set on both sides of the top of the equipment. To facilitate the installation of equipment auxiliary structures such as operating platforms, welding connecting plates are usually set at the connection between the equipment and the equipment auxiliary structures. The connecting plates are connected and fixed to the equipment auxiliary structures by welding, thereby realizing the installation of the equipment auxiliary structures.

[0003] Since transformer tower equipment has different process characteristics from conventional equipment, the gas pressure inside the equipment will change periodically, which will cause the equipment body to expand and contract slightly periodically. If lifting ears and welded connecting plates are set on the body, local tensile and compressive stresses will be generated periodically at the welding parts, affecting the normal operation of the equipment, shortening the long-term service life of the equipment, and increasing the safety risks of the equipment.

[0004] In order to ensure the normal operation and long service life of transformer tower equipment and reduce potential safety hazards, lifting lugs and welded connection plates should not be set on the transformer tower equipment body, but this will bring great difficulties to the equipment hoisting and equipment accessory structure installation. How to achieve smooth hoisting of transformer tower equipment and installation of equipment accessory structures is the key point of construction. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a transformer tower equipment installation and construction method, which can smoothly realize the equipment hoisting and the installation of the equipment's auxiliary structures, reduce the hoisting safety risks, increase the long-term service life of the equipment, and reduce the equipment's safety hazards.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method for installing transformer tower equipment comprises the following steps: Step 1: Make a hoop-type lifting lug and install it on a transformer tower device; The clamp-type lifting lugs include a pair of clamp-type clamps, each clamp is provided with lug plates at both ends, and lug plate bolt holes are provided through the lug plates. A lifting lug is provided in the middle of the clamp, and temporary plate-type lifting lugs are symmetrically provided on the clamp surface on both sides of the lifting lug. The transformer tower equipment is placed horizontally on the saddle. Corresponding to the installation position of the clamp-type lifting ear on the transformer tower equipment, the rubber pad is installed on the outer surface of the transformer tower equipment, and then the clamp-type lifting ear is fixed to the outside of the rubber pad. Finally, the clamp-type lifting ear is installed by bolts installed in the bolt holes of the ear plate. Step 2: hoisting transformer tower equipment into place; The main crane is responsible for the main lifting of the equipment, and the auxiliary crane is responsible for tail delivery, cooperating with the main crane to complete the lifting operation of transformer tower equipment; Step 3: After the lifting operation is completed, remove the hoop-type lifting lugs; Step 4: Installation of equipment auxiliary structures; The equipment accessory structure is prefabricated in advance, and the equipment accessory structure is installed in a modular manner after the hoop-type lifting lugs are removed; Step 5: Align the equipment; Step six, equipment grouting; After the equipment is aligned and passed the acceptance, the gap between the equipment foundation and the skirt base plate is grouted with grouting material.

[0007] As a preferred embodiment, in step one, the lifting ear includes a tube shaft, a baffle and an inner rib plate; the inner end of the tube shaft is fixed to the middle of the clamp, the inner rib plate is cross-fixed inside the tube shaft, and the baffle plate is fixedly connected to the outer end edge of the tube shaft.

[0008] As a preferred embodiment, in step one, when installing the rubber pad, first make a marking line at 1 / 3 of the distance from the top of the transformer tower equipment, wrap the rubber pad around the marking line, and fix multiple turns of steel belt on the outside of the rubber pad to fix the rubber pad.

[0009] As a preferred implementation, in step 2, the transformer tower equipment is first erected by the cooperation of the main and auxiliary cranes, and then the main crane places the transformer tower equipment on the equipment foundation, and after preliminarily adjusting the verticality of the transformer tower equipment, the anchor bolts are temporarily tightened.

[0010] As a preferred implementation, in step three, after the transformer tower equipment is hoisted, the main crane hook is connected to the wire rope on the temporary plate-type lifting eye and the hook is lifted to put force on the wire rope, the auxiliary crane transports the construction personnel to the clamp-type lifting eye to loosen the bolts, and then the main crane rotates until the clamp-type lifting eye is detached from the transformer tower equipment, completing the removal of the clamp-type lifting eye.

[0011] As a preferred implementation, in step three, after the removal of the clamp-type lifting lugs is completed, the construction personnel continue to remove the steel belts and rubber pads.

[0012] As a preferred implementation, in step four, in the equipment auxiliary structure, the operating platform, guardrails, straight ladder and galvanized steel grating are installed as a module as a whole, the module is limited and fixed in the horizontal direction by the top connecting pipe flange of the transformer tower type equipment, and the module is limited and fixed in the vertical direction by the platform support and the vertical contact with the top of the transformer tower type equipment.

[0013] As a preferred implementation, in step 4, during the installation of the equipment accessory structure, a flexible pad is used as a transition at the contact point between the equipment accessory structure and the equipment body.

[0014] As a preferred implementation, in step five, the equipment is aligned by adjusting the combination of shims and measuring with a theodolite in two vertical directions of 0° and 90°.

[0015] As a preferred implementation, in step six, the surface of the equipment foundation is roughened and loose materials are cleaned before the transformer tower equipment is put in place; after the equipment is aligned and accepted, the surface of the equipment foundation is fully moistened with clean water, and excess water is cleaned; the outer formwork is installed, and the distance from the outer formwork to the outer edge of the skirt base plate should be no less than 60 mm, and the height exceeds the upper surface of the equipment skirt base plate by 10 mm; secondary grouting is directly carried out, and the secondary grouting uses C60 non-shrinkage grouting material, and the grouting between the equipment foundation and the equipment skirt base plate is completed at one time with the grouting material, and the upper part of the grouting layer is flush with the upper surface of the skirt base plate.

[0016] The transformer tower equipment installation and construction method described in the present invention adopts a clamp-type lifting lug for lifting. Compared with the lifting of wire rope bundled equipment without a lifting lug in the prior art, the present invention greatly improves the safety of lifting without damaging the equipment body. At the same time, the clamp-type lifting lug can be reused on equipment with the same diameter, which can effectively reduce construction costs, speed up construction progress, and ensure construction quality.

[0017] In addition, compared with the rigid installation of the equipment auxiliary structure and the equipment body by welding the equipment auxiliary structure to the equipment body, the use of flexible pads for over-installation effectively avoids the influence of local stress caused by welding on transformer tower equipment, ensures the normal operation of the equipment, extends the long-term service life of the equipment, and reduces the safety hazards of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are used to provide further explanation 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.

[0019] Figure 1 It is a schematic diagram of the structure of the hoop type lifting ear of the present invention, wherein: Figure 1 (a) is the front view of the hoop type lifting ear. Figure 1 (b) is a side view of the hoop type lifting eye; Figure 2 This is a schematic diagram of the installation of the rubber pad of the present invention; Figure 3 This is a schematic diagram of the installation of the hoop type lifting ear of the present invention, wherein: Figure 3 (a) is the front view of the installation of the clamp type lifting lug. Figure 3 (b) is a side view of the installation of the clamp type lifting eye; Figure 4 This is a schematic diagram of the main and auxiliary cranes lifting and hoisting in pairs according to the present invention; Figure 5 It is a schematic diagram of the device of the present invention in place; Figure 6 It is a schematic diagram of the hoop type lifting lug of the present invention before and after removal, wherein: Figure 6 (a) is a schematic diagram before the clamp-type lifting lug is removed. Figure 6 (b) is a schematic diagram after the clamp-type lifting lug is removed; Figure 7 middle, Figure 7 (a) is a schematic diagram of the installation of the auxiliary structure of the equipment of the present invention, Figure 7 (b) Figure 7 (a) A partial enlarged view; Figure 8 The present invention is a schematic diagram of aligning the device.

[0020] In the figure, 1-pipe shaft, 2-baffle, 3-hoop, 4-ear plate, 5-inner rib plate, 6-reinforcement ring, 7-lifting ear, 8-hoop type lifting ear, 9-temporary plate type lifting ear, 10-transformer tower equipment, 11-rubber pad, 12-steel belt, 13 skirt, 14-skirt bottom plate, 15-pipe flange, 16-saddle, 17-bolt, 18-main crane, 19-auxiliary crane, 20-main lifting wire rope, 21-auxiliary lifting wire rope, 22-shim, 23-equipment foundation, 24-connecting hoop, 25-operating platform, 26-guardrail, 27-straight ladder, 28-platform support, 29-guard plate, 30-polytetrafluoroethylene pad, 31-connecting plate, 32-fastening bolts. DETAILED DESCRIPTION

[0021] 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, in the absence of conflict, the features in the embodiments and examples of this application can be combined with each other.

[0022] The overall concept of the present invention is that before the equipment is hoisted, the equipment is placed horizontally on the saddle, the clamp-type lifting ears are fixed to the designated hoisting position of the equipment by bolt connection, and then the equipment is hoisted into place and initially aligned by a crane; after the auxiliary structures of the equipment are manufactured, they are installed centrally, and during installation, a pressure-resistant and aging-resistant flexible pad is used as a transition between the auxiliary structures of the equipment and the equipment body.

[0023] The present embodiment provides an installation and construction method for transformer tower type equipment 10, wherein the transformer tower type equipment 10 includes 12 transformer adsorption towers, each of which has a height of 9.8m, a diameter of 2000㎜, a weight of 26t, and a foundation elevation of 0.2m. After the equipment is hoisted into place, the auxiliary structure of the equipment is installed. After the auxiliary structure of the equipment is installed, the equipment is finally aligned. After the equipment is finally aligned, the equipment is grouted, thereby completing all the installation work of the equipment.

[0024] 1. Design of special hoop type lifting lug 8 Design the hoop-type lifting lug 8 according to the equipment shape, weight and diameter.

[0025] Specifically, the type of the lifting lug 7 is designed according to the shape of the transformer tower equipment 10; the specification of the lifting lug 7 is designed according to the weight of the transformer tower equipment 10; the specification of the clamp 3 is designed according to the diameter, weight and specification of the lifting lug 7 of the transformer tower equipment 10; in this example, the transformer tower equipment 10 is a vertical cylindrical shape, the weight of the transformer tower equipment 10 is 26t, the weight of the lifting sling is about 1t, the diameter of the transformer tower equipment 10 is 2000㎜, and the final lifting lug 3 is designed as a tubular lifting lug 3 with a specification of Ø 325×16㎜, material 20#, quantity 2; clamp 3 is designed as clamp type clamp 3, inner diameter 2010㎜, specification 500×3700×16㎜, material Q235B, quantity 1 set (2 pieces); rubber pad 11 adopts polyurethane rubber pad 11, specification 600×6500×20㎜, quantity 1 set; bolt 17 is designed as double-headed high-strength bolt, specification M20×160, material 35CrMoA / 30CrMo, quantity 20 sets.

[0026] 2. Production of hoop-type lifting lug 8 like Figure 1 As shown, according to the design requirements of the hoop type lifting lug 8, the assembly components are respectively manufactured and prepared. The hoop type lifting lug is an assembly, mainly composed of the lifting lug 7, the hoop 3, the rubber pad 11, the bolt 17, etc. Figure 1 As shown in (a), the clamp-type lifting ear clamp is a clamp-type clamp, and ear plates 4 are provided at both ends of each clamp 3, and ear plate bolt holes are opened through the ear plates 4. A lifting ear 7 is provided in the middle of the clamp 3, and temporary plate-type lifting ears 9 are symmetrically provided on the clamp surface on both sides of the lifting ear 7.

[0027] 1. Production of hanging lug 7 like Figure 1 As shown in (b), the lifting lug 7 includes a pipe shaft 1, a baffle 2 and an inner rib 5. The inner end of the pipe shaft 1 is fixed to the middle of the clamp 3, the inner rib 5 is cross-fixed inside the pipe shaft 1, and the baffle 2 is fixedly connected to the outer end edge of the pipe shaft 1. A reinforcing ring 6 can be provided on the outer edge of the baffle 2.

[0028] For example, in this embodiment, the pipe shaft 1 selects a seamless steel pipe for structure, with a specification of Ø325×16㎜ and a material of 20#. The inner rib plate 5, the baffle plate 2, and the reinforcing ring 6 select Q235B plates of the same category and grade as the pipe shaft 1, with a thickness of 12㎜. The pipe shaft 1, the baffle plate 2, the inner rib plate 5, and the reinforcing ring 6 are accurately cut. The lug 7 pad does not need to be processed separately, and the clamp 3 is used instead. The cutting margin is reserved for 3㎜. The pipe shaft 1 is required to be a whole material, and splicing is not allowed; the cutting position of the cutting parts is polished, and the cutting residues are polished clean. The processed pipe shaft 1, the inner rib plate 5, and the baffle plate 2 are assembled, and after the assembly is completed, they are fixed by spot welding. The joints are welded with E4315 (J427) alkaline welding rods. The connection between the inner rib plate 5 and the pipe shaft 1 is welded first, and then the connection between the baffle plate 2 and the pipe shaft 1 is welded. The height of the weld leg is not less than the thickness of the adjacent thinnest plate.

[0029] 2. Production of clamp 3 Exemplarily, the clamp 3 is made of a middle plate with a specification of 500×3700×16㎜ and a material of Q235B; the clamp 3 is precisely cut with a 3㎜ cutting margin reserved, and the cutting plate of the clamp 3 is required to be a whole piece, and splicing is not allowed.

[0030] According to the shape and size of the clamp 3, a roller bed is used to press out the required curvature of the clamp 3, and then a bending machine is used to press out the folded ear plate 4 of the clamp 3; a drilling machine is used to drill holes at the specified positions of the bolts 17, and the diameter of the ear plate bolt holes is Ø22㎜, which is 2㎜ larger than the bolt diameter; the cutting position of the blanking parts is polished to clean the cutting residues.

[0031] 3. Welding of lifting lug 7 and clamp 3 Weld the ear 7 at the designated position of the clamp 3. During the welding process, pay attention to controlling the interlayer temperature to avoid excessively high or low temperatures affecting the weld quality. The height of the weld leg should not be less than the thickness of the adjacent thinnest plate. After welding, use magnetic particle inspection and pass it to ensure that the welding quality meets the requirements.

[0032] Four positions are symmetrically and evenly selected on the hoop-type lifting lug 8 to be welded with temporary plate-type lifting lugs 9 for use when the hoop-type lifting lug 8 is removed.

[0033] 4. Preparation of rubber pad 11 and bolt 17 The rubber pad 11 is a polyurethane rubber pad with a diameter of δ=20 mm, which is slightly wider than the width of the clamp 3, with a width of 50 mm on each side and a total width of 600 mm. The length is sufficient to surround the transformer tower equipment 10. The bolt 17 is a double-headed high-strength bolt with a specification of M20×160 mm, a grade of 10.9, a material of 35CrMoA / 30CrMo, and a quantity of 20 sets.

[0034] 3. Installation of hoop-type lifting lug 8 1. Rubber pad 11 installation like Figure 2As shown in the figure, a marking line is made at the 1 / 3 position from the top of the transformer tower-like equipment 10. The prepared rubber pad 11 is wound around once with the marking line as the center. A 20×2 mm steel strip 12 is used for fixation and tightened by a fastener. The steel strip 12 is wound three times in the upper, middle, and lower parts. First, wind the middle part, and then wind the two sides. The fastening joints of the steel strip 12 should be staggered, with a distance of not less than 1 m.

[0035] 2. Installation of the hoop-type lifting lug 8 As Figure 3 shown in the figure, the hoop-type lifting lug 8 is installed with the marking line as the center. After adjustment, the bolts 17 are installed in the bolt holes of the two side ear plates. In the initial state, the bolts 17 are slightly stressed. The bolts 17 are tightened in the order of first inside and then outside, first in the middle and then on both sides. The bolts 17 on both sides of the hoop 3 are symmetrically tightened in two steps of initial tightening and final tightening, and the tightening torque is not less than the calculated torque.

[0036] Calculation of the torque value: The friction coefficient μ between the rubber pad 11 and the surface of the transformer tower-like equipment 10 is taken as 0.4, the safety factor is taken as 1.5, the contact area S = 2×3.14×0.5 = 3.14㎡, the equipment weight is 26t = 260kN, the torque coefficient k is taken as 0.2, and the diameter of the bolt 17 is Ø20 mm.

[0037] The normal pressure perpendicular to the contact surface: Fn = 260 / 0.4 = 650kN.

[0038] The normal pressure perpendicular to the contact surface after considering the safety factor: Fn1 = 1.5×650 = 975kN.

[0039] The tightening force of a single set of bolts 17: F2 = 975 / 20 = 48.75kN.

[0040] The calculated tightening torque of the bolt 17: T1 = k×F×d / 1000 = 0.2×48.75×20 / 1000 = 0.195kN.m.

[0041] The rated tightening torque of the bolt 17: T2 = 0.446kN.m. T1 < T2, so the tightening state of the bolt 17 is safe and can withstand the tightening force.

[0042] IV. Hoisting and positioning of the equipment 1. Selection of hoisting conditions According to the hoisting operation radius, equipment height, and equipment weight of the equipment, a hoisting machine is selected. The hoisting and positioning of the transformer tower-like equipment 10 are completed through the coordinated cooperation of two cranes.

[0043] Specifically, the maximum lifting operation radius is determined by the initial position of the equipment, the equipment position, and the crane position; the maximum lifting height is determined by the equipment installation height; the calculated load is determined by the equipment weight; and the crane selection is determined comprehensively based on the maximum lifting operation radius, the maximum lifting height, and the calculated load.

[0044] The specifications of the lifting rigging are determined by calculating the load. After calculation, the calculated load in this embodiment is Q1=1.2×(26+1)=32.4t, the maximum operating radius of the main crane 18 is 18m, and the maximum lifting height is 20m. Finally, a 180t crawler crane is selected as the main crane, and a 70t truck crane is selected as the tail crane. The two cranes work together to complete the lifting of the transformer tower equipment 10 into place.

[0045] As the main hoisting steel wire rope 20, two φ34-6×37(a)-1670 steel wire ropes are selected, each of which is 20m long and has two bends in one strand. As the auxiliary hoisting steel wire rope 21, two φ26-6×37(a)-1670 steel wire ropes are selected, each of which is 12m long and has two bends in one strand. Four φ12-6×37(a)-1670 steel wire ropes are fixed at the four temporary plate-type lifting ears 9 of the clamp-type lifting ears 8, each of which is 8m long and is used for dismantling the clamp-type lifting ears 8.

[0046] 2. Equipment hoisting like Figure 4 As shown, the main crane 18 and the auxiliary crane 19 are positioned at the specified positions, the main hoisting wire rope 20 is fixed to the clamp-type lifting ear 8 in a one-strand two-bend manner, and the auxiliary hoisting wire rope 21 is fixed to the equipment skirt bottom plate 14 in a one-strand two-bend manner.

[0047] The main crane 18 and the auxiliary crane 19 are slowly lifted according to the lifting signal to straighten the main lifting wire rope 20 and the auxiliary lifting wire rope 21, and check whether the main lifting wire rope 20 and the auxiliary lifting wire rope 21 are normal; after confirming that they are normal, the main crane 18 and the auxiliary crane 19 continue to lift slowly to force the slings and check whether the force of each sling is uniform. After the inspection is qualified, the main crane 18 and the auxiliary crane 19 continue to lift, so that the transformer tower equipment 10 and the saddle 16 are separated by 200㎜, and then the force of the main lifting wire rope 20, the auxiliary lifting wire rope 21, the clamp-type lifting ear 8, and the operation of the main crane 18 and the auxiliary crane 19 are carefully checked. At the same time, check whether the equipment weight displayed by the instruments of the main crane 18 and the auxiliary crane 19 is within the permitted range of lifting. After everything is normal, continue to lift. The main crane 18 and the auxiliary crane 19 cooperate to erect the transformer tower equipment 10. When the elevation angle of the transformer tower equipment 10 to the ground reaches 90°, the auxiliary crane 19 removes the hook, and the skirt base plate 14 of the transformer tower equipment 10 is 200 mm from the ground. Observe whether the clamp-type lifting ear 8 is firm and stable. When everything is normal, formal lifting begins.

[0048] like Figure 5 As shown, the main crane 18 slowly lifts the transformer tower equipment 10 to 500㎜ above the equipment foundation 23 to confirm the orientation of the equipment pipe mouth; slowly puts the transformer tower equipment 10 on the equipment foundation 23, preliminarily adjusts the verticality of the transformer tower equipment 10, and temporarily tightens the anchor bolts with slight force.

[0049] A towing rope is tied to the main hoisting wire rope 20 in advance. After the main crane 18 releases the hook, the lifting personnel tighten the towing rope to make the main hoisting wire rope 20 disengage from the clamping lug 8, completing the unhooking operation. Then the main crane 18 rotates to retract the main hoisting wire rope 20 and other rigging.

[0050] like Figure 6 As shown in (a), the unfixed ends of the four steel wire ropes previously fixed on the temporary plate-type lifting lugs 9 are fixed on the hook of the main crane 18, and the hook is slowly lifted until the steel wire ropes are slightly stressed; the auxiliary crane 19 lifts the hanging basket carrying the construction workers to the clamp-type lifting lug 8, and the construction workers loosen the bolts 17 on both sides of the clamp-type lifting lug 8, and then the main crane 18 rotates until the clamp-type lifting lug 8 is separated from the transformer tower equipment 10, and the removal of the clamp-type lifting lug 8 is completed. The staff removes the rubber pad 11 to tighten the steel belt 12, and removes the rubber pad 11, as shown in FIG. Figure 6 As shown in (b), the removal of the rubber pad 11 is completed.

[0051] 5. Fabrication of equipment auxiliary structures The equipment accessory structure mainly includes the operating platform 25, guardrail 26, straight ladder 27, and connecting hoop 24. The equipment accessory structure can be prefabricated in advance, and the connection nodes of the operating platform 25, guardrail 26, and straight ladder 27 are connected by welding rigid connection. The structure and external dimensions of the equipment accessory structure such as the operating platform 25, guardrail 26, straight ladder 27, and connecting hoop 24 are made with reference to the corresponding steel component atlas, and the material is Q235 steel, and the platform plate is made of galvanized steel grating.

[0052] The connection between the equipment auxiliary structure guard plate 29 and the equipment shall not be welded, but shall be isolated by pressure-resistant and aging-resistant polytetrafluoroethylene pads 30, the thickness of which is 20 mm, and the polytetrafluoroethylene pads 30 and guard plates 29 shall be connected by galvanized bolts. Two sets of connection hoop 24 are prefabricated, using 100×8 mm flat steel, and are located in the middle and bottom of the ladder respectively.

[0053] 6. Installation of equipment auxiliary structures like Figure 7As shown in (a), the prefabricated equipment accessory structure is placed near the equipment foundation 23 in advance before the equipment is hoisted into place, so as to facilitate the hoisting position. After the equipment is hoisted into place and initially aligned and the hoop-type lifting lug 8 is removed, the accessory structure is installed in a modular manner. The operating platform 25, the guardrail 26, the straight ladder 27 and the galvanized steel grating are installed as a whole as a module. The module is fixed horizontally by the top pipe flange 15 of the transformer tower equipment 10, as shown in FIG. Figure 7 As shown in (b), the vertical direction is fixed by the platform support 28 and the guard plate 29 to the top of the transformer tower type equipment 10, and the contact part adopts a polytetrafluoroethylene pad 30 for flexible transition, so that the equipment body is not affected by local welding stress.

[0054] The upper part of the straight ladder 27 is welded to the operating platform 25 and the guardrail 26 through the connecting plate 31, and the middle and bottom parts are welded to the connecting hoop 24 through the connecting plate 31. The connecting hoop 24 is fixed to the middle and bottom of the equipment by fastening bolts 32; the connecting hoop 24 and the equipment body are connected by a flexible pad, which is a polyurethane rubber pad with a width of 100 mm and a thickness of 10 mm.

[0055] 7. Equipment Alignment like Figure 8 As shown, the transformer tower equipment 10 is aligned by adjusting the combination of shims 22 and measuring with a theodolite.

[0056] Before the transformer tower equipment 10 is put in place, the shims 22 are arranged in place in advance, and the initial alignment is carried out after it is in place; after the equipment auxiliary structure is installed, the equipment is finely aligned; the verticality of the transformer tower equipment 10 in the 0° and 90° directions is adjusted by adjusting the shims 22, and the verticality of the equipment is accurately measured by the theodolite, and finally the verticality of the transformer tower equipment 10 is controlled within h / 1000, where h is the vertical distance from the upper measuring point of the equipment to the lower measuring point; after the alignment is qualified, the two sides of the shims 22 are spot welded and fixed.

[0057] 8. Equipment foundation 23 grouting Before the transformer tower equipment 10 is put in place, the surface of the equipment foundation 23 is roughened and the loose materials are cleaned up; after the equipment is aligned and accepted, the surface of the equipment foundation 23 is fully moistened with clean water, and the excess water is cleaned up; the outer formwork is installed, and the distance from the outer formwork to the outer edge of the skirt base plate 14 should be no less than 60mm, and the height exceeds the upper surface of the equipment skirt base plate 14 by 10mm; because the anchor bolts are pre-buried, there is no need for traditional primary grouting, and secondary grouting is directly carried out. The secondary grouting uses C60 non-shrinkage grouting material, and the grouting between the equipment foundation 23 and the equipment skirt base plate 14 is completed at one time with the grouting material, and the upper part of the grouting layer is flush with the upper surface of the skirt base plate 14. At this point, all construction content is completed.

[0058] 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 deformations and changes. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for installing and constructing transformer tower equipment, characterized in that: The following steps are involved: Step 1: Make a clamp-type lifting lug and install it on a transformer tower device; The clamp-type lifting lugs include a pair of clamp-type clamps, each clamp is provided with lug plates at both ends, and lug plate bolt holes are provided through the lug plates. A lifting lug is provided in the middle of the clamp, and temporary plate-type lifting lugs are symmetrically provided on the clamp surface on both sides of the lifting lug. The transformer tower equipment is placed horizontally on the saddle. Corresponding to the installation position of the clamp-type lifting ear on the transformer tower equipment, the rubber pad is installed on the outer surface of the transformer tower equipment, and then the clamp-type lifting ear is fixed to the outside of the rubber pad. Finally, the clamp-type lifting ear is installed by bolts installed in the bolt holes of the ear plate. Step 2: hoisting transformer tower equipment into place; The main crane is responsible for the main lifting of the equipment, and the auxiliary crane is responsible for tail delivery, cooperating with the main crane to complete the lifting operation of transformer tower equipment; Step 3: After the lifting operation is completed, remove the hoop-type lifting lugs; Step 4: Installation of equipment auxiliary structures; The equipment accessory structure is prefabricated in advance, and the equipment accessory structure is installed in a modular manner after the hoop-type lifting lugs are removed; Step 5: Align the equipment; Step six, equipment grouting; After the equipment is aligned and passed the acceptance, the gap between the equipment foundation and the skirt base plate is grouted with grouting material.

2. The transformer tower equipment installation construction method according to claim 1, characterized in that: In step one, the lifting ear includes a tube shaft, a baffle and an inner rib plate; the inner end of the tube shaft is fixed to the middle of the clamp, the inner rib plate is cross-fixed inside the tube shaft, and the baffle is fixedly connected to the outer end edge of the tube shaft.

3. The transformer tower equipment installation construction method according to claim 1 or 2, characterized in that: In step one, when installing the rubber pad, first make a marking line at 1 / 3 of the distance from the top of the transformer tower equipment, wrap the rubber pad around the marking line, and fix multiple turns of steel belt on the outside of the rubber pad to fix the rubber pad.

4. The transformer tower equipment installation construction method according to claim 3 is characterized in that: In step two, the transformer tower equipment is first erected by the cooperation of the main and auxiliary cranes, and then the main crane places the transformer tower equipment on the equipment foundation. After the verticality of the transformer tower equipment is preliminarily adjusted, the anchor bolts are temporarily tightened.

5. The transformer tower equipment installation construction method according to claim 1 or 4, characterized in that: In step three, after the transformer tower equipment is hoisted, the main crane hook is connected to the wire rope on the temporary plate-type lifting eye and the hook is lifted to put force on the wire rope. The auxiliary crane transports the construction personnel to the clamp-type lifting eye to loosen the bolts, and then the main crane rotates until the clamp-type lifting eye is detached from the transformer tower equipment, completing the removal of the clamp-type lifting eye.

6. The transformer tower equipment installation construction method according to claim 5, characterized in that: In step three, after the removal of the clamp-type lifting lugs, the construction workers continue to remove the steel belts and rubber pads.

7. The transformer tower equipment installation construction method according to claim 1 or 6, characterized in that: In step 4, in the equipment auxiliary structure, the operating platform, guardrails, straight ladder and galvanized steel grating are installed as a module as a whole. The module is limited and fixed in the horizontal direction by the connecting flange on the top of the transformer tower equipment, and the module is limited and fixed in the vertical direction by the platform support and the vertical contact with the top of the transformer tower equipment.

8. The transformer tower equipment installation construction method according to claim 7, characterized in that: In step 4, during the installation of the equipment auxiliary structure, a flexible pad is used for transition at the contact point between the equipment auxiliary structure and the equipment body.

9. The transformer tower equipment installation construction method according to claim 1 or 8, characterized in that: In step five, the equipment is aligned in two vertical directions, 0° and 90°, by adjusting the shims and measuring with the theodolite.

10. The transformer tower equipment installation construction method according to claim 9, characterized in that: In step six, the surface of the equipment foundation should be roughened and loose materials should be cleaned before the transformer tower equipment is put into place; after the equipment is aligned and accepted, the surface of the equipment foundation should be fully moistened with clean water and excess water should be cleaned; the outer formwork should be installed, and the distance from the outer formwork to the outer edge of the skirt base plate should be no less than 60 mm, and the height should exceed the upper surface of the equipment skirt base plate by 10 mm; secondary grouting should be carried out directly, and C60 non-shrinkage grouting material should be used for secondary grouting. The grouting material should be used to complete the grouting between the equipment foundation and the equipment skirt base plate at one time, and the upper part of the grouting layer should be flush with the upper surface of the skirt base plate.

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