WO2023124838A1 - 薄膜罐吊顶结构及薄膜罐 - Google Patents

薄膜罐吊顶结构及薄膜罐 Download PDF

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Publication number
WO2023124838A1
WO2023124838A1 PCT/CN2022/137013 CN2022137013W WO2023124838A1 WO 2023124838 A1 WO2023124838 A1 WO 2023124838A1 CN 2022137013 W CN2022137013 W CN 2022137013W WO 2023124838 A1 WO2023124838 A1 WO 2023124838A1
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WIPO (PCT)
Prior art keywords
outrigger
ceiling
central
outrigger beam
central ceiling
Prior art date
Application number
PCT/CN2022/137013
Other languages
English (en)
French (fr)
Inventor
刘博�
张金伟
程伟
高贤
唐辉永
龙臻
杜宇
孔祥英
Original Assignee
中国石油天然气集团有限公司
中国石油集团工程股份有限公司
中国寰球工程有限公司
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Application filed by 中国石油天然气集团有限公司, 中国石油集团工程股份有限公司, 中国寰球工程有限公司 filed Critical 中国石油天然气集团有限公司
Publication of WO2023124838A1 publication Critical patent/WO2023124838A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/014—Suspension means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/014—Suspension means
    • F17C2203/015—Bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing

Definitions

  • the present application relates to the technical field of storage tanks, in particular to a membrane tank ceiling structure and a membrane tank.
  • Cryogenic liquid medium storage tanks are used to store LNG (liquefied natural gas), liquid ethylene, liquid ethane, liquid propane, liquid ammonia, etc., and generally consist of an inner tank, an outer tank and a cold insulation layer.
  • the inner tank is used to store low-temperature liquid medium, and the top, bottom and tank wall of the inner tank are all wrapped in the cold insulation layer.
  • the outer tank includes an outer tank wall and a dome, the dome is fixed on the top of the outer tank wall, and the ceiling of the inner tank top is suspended on the steel structure of the dome.
  • the suspended ceiling is mainly composed of a frame beam, a suspender and a support plate, the frame beam is connected to the dome through the suspender, and the support plate is fixed on the top of the frame beam.
  • the top of the inner tank wall of the membrane type storage tank (referred to as the membrane tank) should be higher than the plane where the frame beam is located, and connected to the compression ring of the dome to ensure good airtightness of the inner tank.
  • a construction gap has been reserved between the outer edge of the frame beam and the inner wall of the outer tank. The construction personnel pass through the construction gap at high altitude to weld the top of the inner tank wall above the frame beam. After completion, materials need to be transported high-altitude to fill up the reserved construction gap and cover the cold and heat insulation layer.
  • the suspended ceiling structure of the above technical solution increases the construction difficulty and risk factor when welding the tank wall top of the inner tank of the membrane tank.
  • the present application provides a film tank ceiling structure and a film tank, which can reduce the construction difficulty and risk factor when welding the tank wall top of the inner tank.
  • the first aspect of the embodiment of the present application provides a ceiling structure for a membrane tank, which includes a central ceiling piece and a plurality of outrigger beams distributed in the circumferential direction around the center ceiling piece.
  • the joint surface, the edge side of the central ceiling part is inclined, the first end of each outrigger beam is connected with the central ceiling part, and each outrigger beam has a stretched state and a folded state;
  • the abutment surface abuts the edge side, the second end of the outrigger beam extends away from the center of the central ceiling part, and the entire outrigger beam extends along the plane where the central ceiling part is located, the edge side and the bottom edge of the abutment surface are both
  • the outrigger leans toward the side away from the center of the center ceiling piece; the outrigger beam is biased toward the side of the center ceiling piece when the outrigger beam is in a folded-back state.
  • one of the outrigger beam and the central ceiling member is provided with a guide structure, and the other one is at least partially inserted into the guide structure when the outrigger beam is in an extended state.
  • the guide structure is arranged at the edge side of the central ceiling piece, and when the outrigger beam is in an extended state, the part of the outrigger beam close to the abutment surface is inserted into the guide structure; or , the guide structure is arranged at the abutting surface of the outrigger beam, and when the outrigger beam is in a stretched state, the part of the central ceiling member close to the side of the edge is inserted into the guide structure.
  • the outrigger beam is hinged to the central ceiling piece, and the hinge axis of the outrigger beam and the central ceiling piece is parallel to the plane where the central ceiling piece is located.
  • the first end of the outrigger beam is hinged to the edge position of the top of the central ceiling member through a hinge.
  • a hinged plate is provided on one of the top of the outrigger beam and the top of the central ceiling piece, and the other one of the top of the outrigger beam and the top of the central ceiling piece is provided Pairs of lug plates arranged at intervals;
  • the hinge plate is inserted between the paired ear plates, the hinge plate and the ear plate are provided with hinge holes, and the hinge piece is passed through the hinge holes of the hinge plate and the ear plate.
  • the central ceiling piece includes a plurality of radial beams extending along the radial direction of the central ceiling piece, the number of the outhanging beams is equal to the number of the radial beams, and the outreaching beams correspond to each other one by one. Articulating at the end of the radial beam remote from the center of the central ceiling member.
  • it also includes a suspender connected to the top of the central ceiling member;
  • a positioning hole is provided near the second end of the outrigger beam.
  • the second end of the outrigger beam has rounded corners
  • the ceiling structure of the membrane tank further includes a plurality of support plates, and the support plates are fixed on the central ceiling part and the outrigger beams.
  • the second aspect of the embodiment of the present application provides a film tank, including a dome and the above-mentioned film tank ceiling structure, and the end of the suspension rod of the film tank ceiling structure away from the central ceiling member is connected to the dome.
  • the film tank ceiling structure and the film tank provided in the embodiment of the present application includes a central ceiling piece and an outrigger beam.
  • the outrigger beam is movably connected with the central ceiling piece, and the outrigger beam has an extended state and a folded state. When it is necessary to weld the membrane plate on the top of the inner tank, the outrigger beam is placed in a folded state to provide the necessary construction gap for the construction basket to pass.
  • the outrigger beam After completing the welding of the membrane plate on the top of the inner tank, the outrigger beam is placed in an extended state, and the outrigger beam is stretched along the plane where the central ceiling piece is located, filling the construction gap; and, when the outrigger beam is in an unfolded state, The abutment surface abuts against the side of the edge, and the bottom edge of the side of the edge and the abutment surface are inclined towards the side away from the center of the central ceiling piece, which not only realizes the reliable positioning of the outrigger beam, but also improves the supporting capacity of the outrigger beam Further strengthening to ensure that the design meets the load-carrying capacity required by the code.
  • the outrigger beam is movably connected to the central ceiling member, and the diameter of the membrane tank ceiling structure can be adjusted and changed by expanding or retracting the outrigger beam, which can not only meet the requirements of the reserved construction gap during the membrane plate construction stage, It can also automatically fill the construction gap between the inner wall of the outer tank and the outer edge of the central ceiling part, avoid bumping damage to the inner tank during construction, and ensure the airtightness and safety of the entire membrane tank.
  • the embodiment of the present application has a simple structure, is easy to manufacture, construct, operate and repair, saves materials, does not increase the total weight of the ceiling structure of the membrane tank, greatly reduces the workload of high-altitude construction, and improves the reliability of the membrane tank.
  • Fig. 1 is the structural representation (omitting suspender and support plate) of the film tank ceiling structure that the related art provides;
  • Fig. 2 is a schematic diagram of the folding state of the film tank ceiling structure provided by the embodiment of the present application (omitting the suspension rod and the support plate);
  • Figure 3 is a schematic diagram of the stretched state of the film tank ceiling structure provided by the embodiment of the present application (omitting the suspension rod and the support plate);
  • Fig. 4 is a structural schematic diagram of the outrigger beam of the film tank ceiling structure provided in the embodiment of the present application in a folded state;
  • Fig. 5 is the front view (including suspender) of Fig. 4;
  • Fig. 6 is the C direction view of Fig. 4;
  • Fig. 7 is a partial enlarged view of the joint of the outrigger beam in Fig. 4;
  • Fig. 8 is a structural schematic diagram of the stretched state of the outrigger beam of the film tank ceiling structure provided by the embodiment of the present application;
  • Fig. 9 is the front view of Fig. 8 (including the suspension rod and the support plate).
  • the suspended ceiling of the cryogenic liquid medium storage tank is a load-bearing structure suspended on the dome of the outer tank, which is used to support the cold insulation material to reduce the cold transfer between the low temperature medium and the external heat source.
  • the suspended ceiling is mainly composed of frame beams 110', suspenders (not shown) and support plates (not shown).
  • the frame beam 110' is a structure in which a multi-frame frame 1101 surrounds a central shape 1100.
  • the central shape 1100 may be a circular or polygonal frame structure.
  • the poly frame 1101 includes several ring beams 112 and several radial beams 111 . Each ring beam 112 surrounds the outer periphery of the central shape 1100 , and several ring beams 112 are distributed along the radial direction of the central shape 1100 at intervals.
  • Each radial beam 111 extends radially outward from the outer periphery of the central shape 1100 , and several radial beams 111 are distributed along the circumferential direction of the central shape 1100 at intervals.
  • the radial beam 111 and the ring beam 112 are connected to each other, and the junctions of the two are rigidly connected.
  • the suspender is connected between the dome and the frame beam, and the suspender can be provided with a threaded two-way adjusting head for adjusting the levelness of the plane where the frame beam is located during installation.
  • the support plate is riveted on the top of the frame beam, and is used for laying cold and heat insulation materials.
  • the top of the tank wall (membrane plate) of the inner tank is higher than the plane where the frame beam is located, and it is connected to the compression ring of the dome to ensure good airtightness of the inner tank.
  • the dome and suspended ceiling are made inside the outer tank wall.
  • a construction gap of 1.8-2.5m is reserved between the outer edge of the frame beam and the inner wall of the outer tank.
  • the construction of the inner tank is carried out inside the outer tank wall.
  • the construction personnel and the membrane plate are hoisted by the construction basket to pass through the construction gap, and the construction personnel weld the membrane plate at high altitude.
  • the gap-filling material is transported to the top of the frame beam, and the frame beam is connected by welding, riveting, etc. to fill the construction gap (the necessary gap of about 0.5 meters can be reserved), and the filled frame Lay support boards and cold and heat insulation materials on the beams.
  • the suspended ceiling needs to be processed twice.
  • the area filled in the construction gap should have sufficient bearing capacity, which requires a lot of work to be completed at a height of 40 meters, and there are high-altitude lifting of materials, welding of parts, and laying of plates.
  • a series of problems, such as difficult construction and high risk factor, not only affect the safety of construction workers, but also bumps during construction are very likely to cause damage to the thin film board, destroying the airtightness and safety of the entire film tank.
  • the embodiments of the present application provide a film tank ceiling structure and a film tank.
  • the film tank ceiling structure includes a central ceiling piece and an outrigger beam.
  • the outrigger beam is movably connected with the central ceiling piece, and the outrigger beam has an extended state and a folded state.
  • the outrigger beam is placed in a folded state to provide the necessary construction gap for the construction basket to pass.
  • the outrigger beam After finishing the welding operation of the film plate on the top of the inner tank, the outrigger beam is placed in the extended state, and the outrigger beam is stretched along the plane where the central ceiling piece is located, filling the construction gap;
  • the interface not only realizes the reliable positioning of the outrigger beam, but also further strengthens the supporting capacity of the outrigger beam, ensuring that the design meets the bearing capacity required by the code.
  • the outrigger beam is movably connected to the central ceiling member, and the diameter of the membrane tank ceiling structure can be adjusted and changed by expanding or retracting the outrigger beam, which can not only meet the requirements of the reserved construction gap during the membrane plate construction stage, It can also automatically fill the construction gap between the inner wall of the outer tank and the outer edge of the central ceiling part, avoid bumping damage to the inner tank during construction, and ensure the airtightness and safety of the entire membrane tank.
  • the embodiment of the present application has a simple structure, is easy to manufacture, construct, operate and repair, saves materials, does not increase the total weight of the ceiling structure of the membrane tank, greatly reduces the workload of high-altitude construction, and improves the reliability of the membrane tank.
  • the embodiment of the present application provides a film tank ceiling structure 100, including a central ceiling piece 110 and a plurality of outrigger beams 120 distributed circumferentially around the central ceiling piece 110, each The first ends of the outrigger beams 120 each have an inclined abutment surface 121 .
  • the edge side 113 of the central ceiling element 110 is arranged obliquely.
  • the first end of each outrigger 120 is movably connected with the central ceiling member 110 , and each outrigger 120 has an extended state and a folded state.
  • the second end of the outrigger beam 120 extends away from the center of the central ceiling member 110, and the entire outrigger beam 120 extends along the plane where the central ceiling member 110 is located.
  • the extended state of the extension beam 120 Exemplarily, when the outrigger beam 120 is in the expanded state, the abutment surface 121 abuts against the edge side 113, the second end of the outrigger beam 120 extends away from the center of the central ceiling member 110, and the entire outrigger beam 120 120 extend along the plane where the central ceiling piece 110 is located, and the bottom edge of the edge side 113 and the abutting surface 121 are both inclined towards the side away from the center of the central ceiling piece 110 .
  • the second end of the outrigger beam 120 is folded back towards the center of the central ceiling member 110 , forming a folded state of the outrigger beam 120 .
  • the outrigger beam 120 is biased toward the side of the central ceiling member 110 .
  • first end of the outrigger beam 120 and the second end of the outrigger beam 120 are opposite ends of the extension direction of the outrigger beam 120 .
  • the central ceiling member 110 can be a frame beam 110' structure in the related art, or it can have a circular plate structure (for example, such as an aluminum plate, a stainless steel plate, etc.), or it can be a A frame beam structure with longitudinal beams and beams arranged in warp and weft.
  • the diameter of the central ceiling member 110 should be smaller than the inner diameter of the inner tank, so as to be able to form a sufficient reserved construction gap.
  • the outrigger beam 120 itself needs to meet a certain supporting capacity, and the supporting capacity of the outrigger beam 120 can be further enhanced by the abutment of the abutment surface 121 and the central ceiling member 110 .
  • the outrigger beam 120 can be made of shaped steel, such as I-beam, H-shaped steel, T-shaped steel, channel steel and so on.
  • connection mode between the central ceiling member 110 and the outrigger beam 120 may include a hinge connection, a pin shaft connection or a hinge bolt connection, so that the outrigger beam 120 can relatively conveniently realize the transformation between the extended state and the folded state.
  • the film tank ceiling structure 100 provided in the embodiment of the present application includes a central ceiling component 110 and an outrigger beam 120 .
  • the outrigger beam 120 is movably connected with the central ceiling member 110, and the outrigger beam 120 has an extended state and a folded state.
  • the outrigger beam 120 is placed in a folded state to provide a necessary construction gap for the construction hanging basket to pass through.
  • the outrigger beam 120 is placed in a stretched state, and the outrigger beam 120 is stretched along the plane where the center ceiling piece 110 is located, filling the construction gap; and, the center ceiling piece 110 abuts the outer
  • the abutting surface 121 of the outrigger 120 not only realizes the reliable positioning of the outrigger, but also further strengthens the supporting capacity of the outrigger 120 , ensuring that the design meets the load capacity required by the specification.
  • the outrigger beam 120 is movably connected to the central ceiling member 110, and the diameter of the film tank ceiling structure 100 can be adjusted and changed by expanding or retracting the outrigger beam 120, which can meet the requirements of the reserved construction during the membrane plate construction stage. According to the requirements of the gap, it can automatically fill the construction gap between the inner wall of the outer tank and the outer edge of the central ceiling part 110, avoid bumping damage to the inner tank during the construction process, and ensure the airtightness and safety of the entire film tank.
  • the embodiment of the present application has a simple structure, is easy to manufacture, construct, operate and repair, saves materials, does not increase the total weight of the membrane tank ceiling structure 100, greatly reduces the workload of high-altitude construction, and improves the reliability of the membrane tank.
  • the central ceiling member 110 includes a plurality of radial beams 111 extending in the radial direction of the central ceiling member 110 , and the number and diameter of the outwardly extending beams 120
  • the number of the radial beams 111 is equal, and the outrigger beams 120 are flexibly connected to one end of the radial beams 111 away from the center of the central ceiling member 110 in one-to-one correspondence.
  • the frame beam 110' in the related art can be directly used as the central ceiling member 110, and the outrigger beam 120 can be made of section steel, and then the central ceiling member 110 and the outrigger beam can be flexibly connected by the following hinge bolts, pin shafts and other connectors 120, the frame beam 110' can be improved into the film tank ceiling structure 100 through more than ten common components, making full use of existing resources.
  • the outrigger beam 120 is hinged to the central ceiling member 110 , and the hinge axis between the outrigger beam 120 and the central ceiling member 110 is parallel to where the central ceiling member 110 is located. flat.
  • the outrigger beam 120 can be freely retracted, and the gravity effect of the outrigger beam 120 can be used to make the outrigger beam 120 fall naturally to form an extended state, without spending more time on construction personnel. construction operations.
  • FIGS. The edge position of the top of the component radial beam 111) of the member 110.
  • the abutting surface 121 abuts against the edge side 113 of the central ceiling member 110 .
  • the edge side 113 of the central ceiling piece 110 is used to abut against the abutment surface 121 of the outrigger beam 120, and the edge side surface 113 has a larger area of contact with the abutment surface 121, which improves the positioning of the center ceiling piece 110 on the outrigger beam 120 And support ability, improve the stability and support strength of the overall structure.
  • the outrigger 120 is hinged to the edge side 113 of the central ceiling member 110 through the hinge 1221 ; when the outrigger 120 is in a stretched state, the contact surface 121 abuts against the bottom surface of the central ceiling member 110 .
  • both the edge side 113 and the contact surface 121 are inclined. Both the edge side 113 and the bottom edge of the abutting surface 121 are inclined toward a side away from the center of the central ceiling member 110 .
  • the edge side 113 has a chamfered structure, and the edge side 113 is inclined from the top to the bottom toward the direction extending toward the outer periphery of the central ceiling component 110 . It can be understood that, when the outrigger beam 120 is in a stretched state, the entire surface of the abutment surface 121 abuts against the edge side 113, and the abutment surface 121 also has a chamfered structure, and the abutment surface 121 also moves from the top to the bottom toward the center. The direction in which the outer circumference of the ceiling member 110 extends is inclined.
  • the abutting surface 121 can be a beveled section of the shaped steel.
  • the overhanging beam 120 is an I-beam, and the abutting surface 121 is formed by oblique cutting along the I-shaped section of the I-beam.
  • the central ceiling member 110 is a frame beam 110 ′, and when the radial beam 111 of the central ceiling member 110 is hinged to the overhanging beam 120, the radial beam 111 can also be made of section steel. Cut section.
  • the edge side 113 not only positions the abutting surface 121 , but also transmits the support force of the central ceiling member 110 to the outrigger beam 120 , improving the stability and support strength of the outrigger beam 120 .
  • a guide structure 115 is provided between the outrigger beam 120 and the central ceiling component 110 .
  • one of the outrigger beam 120 and the central ceiling member 110 is provided with a guide structure 115, and when the outrigger beam 120 is in an extended state, the other is at least partially inserted into the guide structure 115 to pass through the guide structure.
  • the structure 115 can guide and limit the overhanging beam 120 in the process of switching between the unfolded state and the folded state.
  • the guide structure 115 can be a guide side plate, or a guide groove.
  • the guide structure 115 is two guide side plates oppositely arranged along the circumferential direction of the central ceiling member 110 .
  • the two guide side plates can be fixed by welding or by bolts.
  • the guide structure 115 is arranged at the edge side 113 of the central ceiling component 110.
  • the approaching Part of the abutting surface 121 is inserted into the guiding structure 115 .
  • the guide structure 115 is fixedly arranged on the outrigger beam 120 .
  • a guide side plate is fixed on both sides of the edge side 113 , the guide side plate has an overhanging section away from the edge side 113 , and a plurality of guide fixing holes 1151 are opened on the overhanging section.
  • three guiding and fixing holes 1151 are arranged in an equilateral triangle on the overhanging section.
  • a fixing hole 123 corresponding to the guiding and fixing hole 1151 is defined in a portion of the overhanging beam 120 close to the abutting surface 121 .
  • the fixing part can be optional pin shaft 1152 and cotter pin.
  • One end of the pin shaft 1152 has a large end head, and the other end of the pin shaft 1152 has a tail pin hole.
  • the big end of the pin shaft 1152 abuts against one of the guide side plates, the middle part of the pin shaft 1152 is inserted into the fixing hole 123 and the guide fixing hole 1151, the tail portion of the pin shaft 1152 passes through the other guide side plate, and the tail pin hole Located on the outside of the guide side panel.
  • the cotter pin is inserted into the tail pin hole of the pin shaft 1152.
  • the opening angle of the two pin legs of the cotter pin is greater than 180°.
  • the arc surfaces of the cylinders are parallel and close to the bearing pin 1152 as far as possible. Both the pin shaft 1152 and the cotter pin can be quickly and manually assembled, which can shorten the time for working at heights as much as possible.
  • the fasteners may also include bolts.
  • the guide structure 115 is arranged at the abutment surface 121 of the outrigger beam 120, and when the outrigger beam 120 is in an extended state, the part of the central ceiling member 110 close to the edge side 113 is inserted in the guiding structure 115 .
  • the guide structure 115 is fixedly arranged on the central ceiling member 110 .
  • This assembling method is similar to the above-mentioned assembling form in which the guide structure 115 is disposed on the edge side 113 , and will not be repeated here.
  • the outrigger 120 is guided and limited by the guide structure 115, and the fixed connection between the outrigger 120 and the central ceiling member 110 is realized through the guide structure 115, which improves the stability of the outrigger 120 in the extended state.
  • a hinged plate 122 is provided on the top of the outrigger beam 120 , and a pair of ear plates 114 are provided on the top of the central ceiling member 110 .
  • the hinge plate 122 is inserted between the pair of ear plates 114 , the hinge plate 122 and the ear plate 114 are provided with hinge holes, and the hinge piece 1221 is passed through the hinge holes of the hinge plate 122 and the ear plate 114 .
  • the hinge member 1221 may be a hinge bolt as shown in FIG. 6 , or a pin shaft. Using the cooperation of the lug plate 114 and the hinge plate 122 as the support of the hinge 1221 provides a greater flexural section modulus for the hinge and improves the strength and rigidity of the hinge 1221 .
  • a reasonable cutting angle can be selected so that all rotating parts that rotate around the hinge 1221 can just avoid each other, avoiding collisions and Interference, and the overall structure is simple and efficient.
  • a hinged plate 122 may also be arranged on the top of the central ceiling member 110, and a pair of ear plates 114 arranged at intervals may be arranged on the top of the overhanging beam 120, so as to increase the strength and rigidity of the hinged member 1221. beneficial effect.
  • the film tank ceiling structure 100 further includes a suspension rod 130 connected to the top of the central ceiling member 110 .
  • a positioning hole 125 is opened near the second end of the outrigger 120 , and a positioning rope 124 is connected between the positioning hole 125 and the suspender 130 when the outrigger 120 is in a folded state.
  • the suspender 130 can be provided with a two-way adjusting head with threads, which is used for adjusting the horizontality of the plane where the central ceiling member 110 is located during the installation process.
  • the positioning hole 125 can be opened on the side of the outrigger 120 close to the suspender 130, and the positioning rope 124 can be a steel wire.
  • an auxiliary rope can be connected between the positioning hole 125 and the dome to improve the support of the outrigger 120 .
  • the second end of the outrigger beam 120 has rounded corners. In this way, damage to the membrane sheet of the membrane tank by the ends of the outrigger beams 120 can be avoided.
  • the film tank ceiling structure 100 further includes a plurality of support plates 140 , and the support plates 140 are fixed on the central ceiling member 110 and the outrigger beams 120 .
  • the supporting board 140 may be one or a combination of flat boards, corrugated boards, and reinforced flat boards. As shown in FIG. 9 , the support plate 140 on the central ceiling member 110 is a corrugated plate, and the support plate 140 on the outrigger beam 120 is a flat plate.
  • the support plate 140 can be fixed by blind rivets, or by welding or bolts.
  • the support plate 140 provides a laying plane for the cold and heat insulation material, and the support plate 140 can evenly transmit the gravity of the cold and heat insulation material to the central ceiling member 110 and the outrigger beam 120 .
  • the embodiment of the present application provides a film tank, including a dome and the above-mentioned film tank ceiling structure 100, and the end of the suspender 130 of the film tank ceiling structure 100 away from the central ceiling member 110 is connected to the dome.
  • the membrane tank provided in the embodiment of the present application includes a dome and a membrane tank ceiling structure 100 .
  • the membrane tank ceiling structure 100 includes a central ceiling piece 110 and an outrigger beam 120 .
  • the outrigger beam 120 is movably connected with the central ceiling member 110, and the outrigger beam 120 has an extended state and a folded state.
  • the outrigger beam 120 is placed in a folded state to provide a necessary construction gap for the construction hanging basket to pass through.
  • the outrigger beam 120 is placed in a stretched state, and the outrigger beam 120 is stretched along the plane where the center ceiling piece 110 is located, filling the construction gap; and, the center ceiling piece 110 abuts the outer
  • the abutting surface 121 of the outrigger 120 not only realizes the reliable positioning of the outrigger 120, but also further strengthens the supporting capacity of the outrigger 120, ensuring that the design meets the load capacity required by the specification.
  • the outrigger beam 120 is movably connected to the central ceiling member 110, and the diameter of the film tank ceiling structure 100 can be adjusted and changed by expanding or retracting the outrigger beam 120, which can meet the requirements of the reserved construction during the membrane plate construction stage. According to the requirements of the gap, it can automatically fill the construction gap between the inner wall of the outer tank and the outer edge of the central ceiling part 110, avoid bumping damage to the inner tank during the construction process, and ensure the airtightness and safety of the entire film tank.
  • the embodiment of the present application has a simple structure, is easy to manufacture, construct, operate and repair, saves materials, does not increase the total weight of the membrane tank ceiling structure 100, greatly reduces the workload of high-altitude construction, and improves the reliability of the membrane tank.
  • connection should be understood in a broad sense, for example, it can be fixed connection, or An indirect connection through an intermediary may be an internal communication between two elements or an interaction relationship between two elements.

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Abstract

一种薄膜罐吊顶结构及薄膜罐，包括中心吊顶件（110）和环中心吊顶件的周向分布的多个外伸梁（120），各外伸梁的第一端均具有倾斜设置的抵接面（121），中心吊顶件的边缘侧面（113）倾斜设置，各外伸梁的第一端均与中心吊顶件活动连接，且各外伸梁均具有伸展状态和回折状态；在外伸梁处于展开状态的情况下，抵接面抵接边缘侧面，外伸梁的第二端向远离中心吊顶件的中心的方向伸展，且整个外伸梁均沿中心吊顶件所在的平面伸展，边缘侧面和抵接面的底边缘均朝远离中心吊顶件的中心的一侧倾斜；在外伸梁处于回折状态的情况下，外伸梁偏向中心吊顶件一侧。该吊顶结构能够减少对内罐的罐壁顶部进行焊接时的施工难度和危险系数。

Description

薄膜罐吊顶结构及薄膜罐
本申请要求于2021年12月31日提交中国专利局、申请号为申请号为202111676465.5、申请名称为“薄膜罐吊顶结构及薄膜罐”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及储罐技术领域，尤其涉及一种薄膜罐吊顶结构及薄膜罐。
背景技术
低温液态介质储罐用于储存LNG(液化天然气)、液态乙烯、液态乙烷、液态丙烷、液氨等，一般由内罐、外罐和保冷绝热层组成。内罐用于储存低温液态介质，内罐的顶部、底部和罐壁全部包裹在保冷绝热层内。外罐包括外罐壁和穹顶，穹顶固定于外罐壁的顶部，内罐顶部的吊顶悬挂于穹顶的钢结构上。
相关技术中，吊顶主要由框架梁、吊杆和支撑板组成，框架梁通过吊杆连接穹顶，支撑板固定在框架梁的顶部。薄膜型储罐(简称薄膜罐)的内罐的罐壁顶部要高出框架梁所在的平面，并连接穹顶的抗压环，以确保内罐良好的气密性。施工时，框架梁的外边缘与外罐的内壁之间已经预留出施工间隙，施工人员于高空中穿过施工间隙，进行框架梁上方的内罐的罐壁顶部的焊接，待焊接、检测完毕后，需要高空运输材料将预留的施工间隙填平，并覆盖保冷绝热层。
然而，上述技术方案的吊顶结构增加了进行薄膜罐的内罐的罐壁顶部焊接时的施工难度和危险系数。
发明内容
鉴于上述问题，本申请提供一种薄膜罐吊顶结构及薄膜罐，能够减少对内罐的罐壁顶部进行焊接时的施工难度和危险系数。
为了实现上述目的，本申请提供如下技术方案：
本申请实施例的第一方面提供一种薄膜罐吊顶结构，包括中心吊顶件和环中心吊顶件的周向分布的多个外伸梁，各外伸梁的第一端均具有倾斜设置的抵接面，中心吊顶件的边缘侧面倾斜设置，各外伸梁的第一端均与中心吊顶件活动连接，且各外伸梁均具有伸展状态和回折状态；在外伸梁处于展开状态的情况下，抵接面抵接边缘侧面，外伸梁的第二端向远离中心吊顶件的中心的方向伸展，且整个外伸梁均沿中心吊顶件所在的平面伸展，边缘侧面和抵接面的底边缘均朝远离中心吊顶件的中心的一侧倾斜；在外伸梁处于回折状态的情况下，外伸梁偏向中心吊顶件一侧。
在一种可以实现的实施方式中，外伸梁和中心吊顶件中，一者设置有导向结构，在外伸梁处于伸展状态的情况下，另一者至少部分插装于导向结构内。
在一种可以实现的实施方式中，导向结构设置于中心吊顶件的边缘侧面处，在外伸梁处于伸 展状态的情况下，外伸梁的靠近抵接面的部分插装于导向结构内；或者，导向结构设置于外伸梁的抵接面处，在外伸梁处于伸展状态的情况下，中心吊顶件的靠近边缘侧面的部分插装于导向结构内。
在一种可以实现的实施方式中，外伸梁与中心吊顶件铰接，外伸梁与中心吊顶件的铰接轴线平行于中心吊顶件所在的平面。
在一种可以实现的实施方式中，外伸梁的第一端通过铰接件铰接于中心吊顶件的顶部的边缘位置处。
在一种可以实现的实施方式中，外伸梁的顶部，以及中心吊顶件的顶部中的一者上设置铰接板，外伸梁的顶部，以及中心吊顶件的顶部中的另一者上设置成对的间隔设置的耳板；
铰接板插装于成对的耳板之间，铰接板和耳板上均开设有铰接孔，铰接件穿设于铰接板和耳板的铰接孔中。
在一种可以实现的实施方式中，中心吊顶件包括多个沿中心吊顶件的径向方向伸展的径向梁，外伸梁的数量与径向梁的数量相等，外伸梁一一对应地活动连接在径向梁的远离中心吊顶件的中心的一端。
在一种可以实现的实施方式中，还包括吊杆，吊杆连接于中心吊顶件的顶部；
外伸梁的靠近第二端的位置开设有定位孔，当外伸梁处于回折状态，定位孔和吊杆之间连接定位绳索。
在一种可以实现的实施方式中，外伸梁的第二端具有圆倒角；
和/或，薄膜罐吊顶结构还包括多个支撑板，中心吊顶件和外伸梁上均固定有支撑板。
本申请实施例的第二方面提供一种薄膜罐，包括穹顶和上述的薄膜罐吊顶结构，薄膜罐吊顶结构的吊杆的远离中心吊顶件的一端连接在穹顶上。
本申请实施例提供的薄膜罐吊顶结构及薄膜罐。该薄膜罐吊顶结构包括中心吊顶件和外伸梁。外伸梁与中心吊顶件活动连接，且外伸梁具有伸展状态和回折状态。当需要进行内罐顶部的薄膜板焊接作业时，将外伸梁置于回折状态，为施工吊篮通过提供必要的施工间隙。当完成内罐顶部的薄膜板焊接作业后，将外伸梁置于伸展状态，外伸梁沿中心吊顶件所在的平面伸展，填补了施工间隙；而且，在外伸梁处于展开状态的情况下，抵接面抵接边缘侧面，且边缘侧面和抵接面的底边缘均朝远离中心吊顶件的中心的一侧倾斜，不仅实现了外伸梁的可靠定位，还使外伸梁的支撑能力得到进一步加强，确保设计满足规范要求的承载能力。
本申请实施例将外伸梁与中心吊顶件活动连接，通过展开或收起外伸梁，实现薄膜罐吊顶结构的直径可调可变，既能满足薄膜板施工阶段预留施工间隙的要求，又能自动填补外罐的内壁与中心吊顶件的外边缘的施工间隙，避免在施工过程中对内罐的磕碰损伤，确保整个薄膜罐的气密性和安全性。
本申请实施例结构简单，易于制造、施工、操作和检修，节约材料，不增加薄膜罐吊顶结构的总重，大幅降低高空施工作业量，提高了薄膜罐的可靠性。
本申请的构造以及它的其他目的及有益效果将会通过结合附图而对优选实施例的描述而更加明显易懂。
附图说明
图1为相关技术提供的薄膜罐吊顶结构的结构示意图(省略吊杆和支撑板)；
图2为本申请实施例提供的薄膜罐吊顶结构的回折状态示意图(省略吊杆和支撑板)；
图3为本申请实施例提供的薄膜罐吊顶结构的伸展状态示意图(省略吊杆和支撑板)；
图4为本申请实施例提供的薄膜罐吊顶结构的外伸梁处于回折状态的结构示意图；
图5为图4的主视图(含吊杆)；
图6为图4的C向视图；
图7为图4的外伸梁连接处的局部放大图；
图8为本申请实施例提供的薄膜罐吊顶结构的外伸梁处于伸展状态的结构示意图；
图9为图8的主视图(含吊杆、支撑板)。
具体实施方式
相关技术中，低温液态介质储罐的吊顶是一种悬挂在外罐的穹顶上的承载结构，用以支撑保冷绝热材料，以减少低温介质与外界热源的冷量传递。
参照图1所示，吊顶主要由框架梁110’、吊杆(未示出)和支撑板(未示出)组成。框架梁110’为多榀框架1101围绕中心形状1100的结构。中心形状1100可以为环形或多边形框架结构。多榀框架1101包括若干环梁112和若干径向梁111。各环梁112均环绕于中心形状1100的外周，且若干环梁112沿中心形状1100的径向方向间隔分布。各径向梁111均由中心形状1100的外周沿径向方向向外延伸，且若干径向梁111沿中心形状1100的周向间隔分布。径向梁111和环梁112相互交接，两者交接处刚性连接。吊杆连接在穹顶与框架梁之间，吊杆可设置带有螺纹的双向调节头，用于在安装过程中调整框架梁所在的平面的水平度。支撑板铆接于框架梁的顶部，用于铺设保冷绝热材料。
吊顶施工定型后，框架梁的外边缘与外罐的内壁之间有较大的间隙(可达2m)，对于单容型储罐、双容型储罐和全容型储罐，其内罐的罐壁位于吊顶的下方，内罐的后续施工不会与顶升就位的吊顶发生干涉。因此，吊顶施工完成后，只需用保冷绝热材料填满框架梁的外边缘与外罐的内壁之间的间隙即可。
而对于薄膜罐，其内罐的罐壁顶部(薄膜板)要高于框架梁所在的平面，并连接穹顶的抗压环，以确保内罐良好的气密性。薄膜板焊接时，施工人员和薄膜板都需要穿越框架梁，因此需要为他们预留出足够宽的操作空间。在使用相关技术中的吊顶进行薄膜板焊接时，需要分别进行“预留间隙”和“填平间隙”的吊顶加工，吊顶的整体加工过程简述如下：
首先，待薄膜罐的外罐壁施工完成后，在外罐壁的内部进行穹顶和吊顶的制作。其中，框架梁的外边缘与外罐的内壁之间预留1.8～2.5m的施工间隙。
其次，将吊顶随穹顶一起顶升至约40米的高空中，并进行穹顶与外罐壁的焊接。
然后，吊顶就位定型后，在外罐壁内部进行内罐的施工。当施工到内罐的罐壁顶部时，由施工吊篮吊运施工人员和薄膜板穿过施工间隙，施工人员在高空中进行薄膜板的焊接。
最后，待焊接完成后，将填平间隙材料运输至框架梁上方，通过焊接、铆接等方法接续框架梁，以填补施工间隙(可以保留必要的约0.5米的间隙)，并在填补后的框架梁上铺设支撑板和保冷绝热材料。
上述技术方案为了同时实现“预留间隙”和“填平间隙”的设计要求，需要对吊顶进行两次加工。尤其是第二次加工(接续框架梁)时，对施工间隙填补的区域应当具有足够的承载能力，这就需要在40米高的高空完成大量作业，存在材料高空吊送、零件焊接、板材铺设等一系列问题，施工难度大，危险系数高，不但影响施工工人安全，而且施工过程中的磕碰极有可能对纤薄的薄膜板造成损伤，破坏整个薄膜罐的气密性和安全性。
针对上述技术问题，本申请实施例提供了一种薄膜罐吊顶结构及薄膜罐。该薄膜罐吊顶结构包括中心吊顶件和外伸梁。外伸梁与中心吊顶件活动连接，且外伸梁具有伸展状态和回折状态。当需要进行内罐顶部的薄膜板焊接作业时，将外伸梁置于回折状态，为施工吊篮通过提供必要的施工间隙。当完成内罐顶部的薄膜板焊接作业后，将外伸梁置于伸展状态，外伸梁沿中心吊顶件所在的平面伸展，填补了施工间隙；而且，中心吊顶件抵接外伸梁的抵接面，不仅实现了外伸梁的可靠定位，还使外伸梁的支撑能力得到进一步加强，确保设计满足规范要求的承载能力。
本申请实施例将外伸梁与中心吊顶件活动连接，通过展开或收起外伸梁，实现薄膜罐吊顶结构的直径可调可变，既能满足薄膜板施工阶段预留施工间隙的要求，又能自动填补外罐的内壁与中心吊顶件的外边缘的施工间隙，避免在施工过程中对内罐的磕碰损伤，确保整个薄膜罐的气密性和安全性。
本申请实施例结构简单，易于制造、施工、操作和检修，节约材料，不增加薄膜罐吊顶结构的总重，大幅降低高空施工作业量，提高了薄膜罐的可靠性。
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请的优选实施例中的附图，对本申请实施例中的技术方案进行更加详细的描述。在附图中，自始至终相同或类似的标号表示相同或类似的部件或具有相同或类似功能的部件。所描述的实施例是本申请一部分实施例，而不是全部的实施例。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
参照图2至图9所示，第一方面，本申请实施例提供一种薄膜罐吊顶结构100，包括中心吊顶件110和环中心吊顶件110的周向分布的多个外伸梁120，各外伸梁120的第一端均具有倾斜设置的抵接面121。中心吊顶件110的边缘侧面113倾斜设置。各外伸梁120的第一端均与中心吊顶件110活动连接，且各外伸梁120均具有伸展状态和回折状态。
外伸梁120的第二端向远离中心吊顶件110的中心的方向伸展，且整个外伸梁120均沿中心吊顶件110所在的平面伸展，抵接面121抵接中心吊顶件110，形成外伸梁120的伸展状态。示例性的，在外伸梁120处于展开状态的情况下，抵接面121抵接边缘侧面113，外伸梁120的第二端向远离中心吊顶件110的中心的方向伸展，且整个外伸梁120均沿中心吊顶件110所在的平面伸展，边缘侧面113和抵接面121的底边缘均朝远离中心吊顶件110的中心的一侧倾斜。
外伸梁120的第二端向靠近中心吊顶件110的中心的方向回折，形成外伸梁120的回折状态。示例性的，在外伸梁120处于回折状态的情况下，外伸梁120偏向中心吊顶件110一侧。
可选的，外伸梁120的第一端和外伸梁120的第二端为外伸梁120的延伸方向的相对两端。
在本申请实施例中，中心吊顶件110可以为相关技术中的框架梁110’的结构，也可以为具有圆形平板结构(示例性的，如铝平板、不锈钢板等结构)，还可以是纵梁和横梁经纬布置的框架梁结构。中心吊顶件110的直径应小于内罐的内径，以能够形成足够的预留施工间隙。
外伸梁120本身需满足一定的支撑能力，且借助抵接面121与中心吊顶件110的抵接，外伸 梁120的支撑能力可以得到进一步增强。示例性的，外伸梁120可以选用型钢制作，如可以取材工字梁、H型钢、T型钢、槽钢等。
中心吊顶件110和外伸梁120的连接方式可以包括铰链连接、销轴连接或铰接螺栓连接，以使外伸梁120能够相对方便的实现伸展状态和回折状态的变换。
本申请实施例提供的薄膜罐吊顶结构100，包括中心吊顶件110和外伸梁120。外伸梁120与中心吊顶件110活动连接，且外伸梁120具有伸展状态和回折状态。当需要进行内罐顶部的薄膜板焊接作业时，将外伸梁120置于回折状态，为施工吊篮通过提供必要的施工间隙。当完成内罐顶部的薄膜板焊接作业后，将外伸梁120置于伸展状态，外伸梁120沿中心吊顶件110所在的平面伸展，填补了施工间隙；而且，中心吊顶件110抵接外伸梁120的抵接面121，不仅实现了外伸梁的可靠定位，还使外伸梁120的支撑能力得到进一步加强，确保设计满足规范要求的承载能力。
本申请实施例将外伸梁120与中心吊顶件110活动连接，通过展开或收起外伸梁120，实现薄膜罐吊顶结构100的直径可调可变，既能满足薄膜板施工阶段预留施工间隙的要求，又能自动填补外罐的内壁与中心吊顶件110的外边缘的施工间隙，避免在施工过程中对内罐的磕碰损伤，确保整个薄膜罐的气密性和安全性。
本申请实施例结构简单，易于制造、施工、操作和检修，节约材料，不增加薄膜罐吊顶结构100的总重，大幅降低高空施工作业量，提高了薄膜罐的可靠性。
在一种可以实现的实施方式中，参照图2和图3所示，中心吊顶件110包括多个沿中心吊顶件110的径向方向伸展的径向梁111，外伸梁120的数量与径向梁111的数量相等，外伸梁120一一对应地活动连接在径向梁111的远离中心吊顶件110的中心的一端。
这样，可以直接利用相关技术中的框架梁110’作为中心吊顶件110，并利用型钢制作外伸梁120，然后通过下述铰接螺栓、销轴等连接件活动连接中心吊顶件110和外伸梁120，通过十余个常见零部件即可将框架梁110’改进成薄膜罐吊顶结构100，充分利用了现有资源。
在一种可以实现的实施方式中，参照图2-图3所示，外伸梁120与中心吊顶件110铰接，外伸梁120与中心吊顶件110的铰接轴线平行于中心吊顶件110所在的平面。
这样，在中心吊顶件110的轴向平面内实现外伸梁120的自由收放，可以利用外伸梁120的重力作用，使外伸梁120自然下落形成伸展状态，无需耗费施工人员更多的施工操作。
在一种可以实现的实施方式中，参照图4-图8所示，外伸梁120的第一端通过铰接件1221铰接于中心吊顶件110(图4-图8中仅示出为中心吊顶件110的组件径向梁111)的顶部的边缘位置处。当外伸梁120处于伸展状态，抵接面121与中心吊顶件110的边缘侧面113抵接。
这样，利用中心吊顶件110的边缘侧面113抵接外伸梁120的抵接面121，边缘侧面113与抵接面121具有较大面积的接触，提升了中心吊顶件110对外伸梁120的定位和支撑能力，提高了整体结构的稳定性和支撑强度。
在一些实施例中，外伸梁120通过铰接件1221铰接在中心吊顶件110的边缘侧面113；当外伸梁120处于伸展状态，抵接面121与中心吊顶件110的底面抵接。
这样，利用中心吊顶件110的底面抵接外伸梁120的抵接面121，也能提升中心吊顶件110对外伸梁120的定位和支撑能力，从而提高整体结构的稳定性和支撑强度。
在一种可以实现的实施方式中，参照图5和图7所示，边缘侧面113和抵接面121均倾斜设置。边缘侧面113和抵接面121的底边缘均朝远离中心吊顶件110的中心的一侧倾斜。
边缘侧面113呈斜切结构，边缘侧面113由顶部向底部朝着向中心吊顶件110的外周伸展的方向倾斜。可以理解的是，当外伸梁120处于伸展状态，抵接面121的整个表面抵接边缘侧面113，抵接面121也呈斜切结构，抵接面121也由顶部向底部朝着向中心吊顶件110的外周伸展的方向倾斜。
当外伸梁120为型钢，抵接面121可以为型钢的斜切截面。示例性的，外伸梁120为工字梁，抵接面121由沿工字梁的工字截面斜向裁切而成。当中心吊顶件110为框架梁110’，中心吊顶件110的径向梁111铰接外伸梁120时，径向梁111也可以为型钢制作，径向梁111具有与外伸梁120互补的斜切截面。
这样，边缘侧面113不仅对抵接面121的定位，还能传递中心吊顶件110对外伸梁120的支撑力，提高外伸梁120的稳定性和支撑强度。
在一种可以实现的实施方式中，参照图5和图8所示，外伸梁120和中心吊顶件110之间设置有导向结构115。可选的，外伸梁120和中心吊顶件110中，一者设置有导向结构115，在外伸梁120处于伸展状态的情况下，另一者至少部分插装于导向结构115内，以通过导向结构115可以对外伸梁120在展开状态和回折状态之间切换的过程中进行导向和限位。
在一些可选的实施方式中。导向结构115可以为导向侧板，也可以是导向凹槽。在本申请实施例中，导向结构115为沿中心吊顶件110的周向相对布置的两个导向侧板。两个导向侧板可以通过焊接固定，也可以通过螺栓固定。
在一种可行的实施方式中，参照图5和图8所示，导向结构115设置于中心吊顶件110的边缘侧面113处，在外伸梁120处于伸展状态的情况下，外伸梁120的靠近抵接面121的部分插装于导向结构115内。进一步可选的，导向结构115固定设置于外伸梁120。
一些可选的实施例中，边缘侧面113的两侧各固定一个导向侧板，导向侧板具有远离边缘侧面113的外伸段，外伸段上开设多个导向固定孔1151。本申请实施例中，外伸段上呈等边三角形布置三个导向固定孔1151。外伸梁120的靠近抵接面121的部分开设与导向固定孔1151对应的固定孔123。
当外伸梁120处于伸展状态，外伸梁120的抵接面121抵接中心吊顶件110的边缘侧面113，外伸梁120靠近抵接面121的部分插装在两导向侧板之间，固定孔123与导向固定孔1151之间连接固定件。固定件可选销轴1152和开口销。销轴1152的一端具有大端头部，销轴1152的另一端开设尾部销孔。销轴1152的大端头部抵接在其中一个导向侧板上，销轴1152的中部插入固定孔123和导向固定孔1151，销轴1152的尾部穿出另一个导向侧板，且尾部销孔位于导向侧板的外侧。开口销插入销轴1152的尾部销孔内，开口销的两个销腿开口角度大于180°，劈开后的销腿须缠绕在销轴1152上，使劈开部分的弧面与销轴1152的圆弧面平行，并尽量靠近销轴1152。使用销轴1152和开口销均可快速手动装配，能够尽量缩短高空作业的时间。在一些实施例中，固定件也可以包括螺栓。
在另一种可行的实施方式中，导向结构115设置于外伸梁120的抵接面121处，在外伸梁120处于伸展状态的情况下，中心吊顶件110的靠近边缘侧面113的部分插装于导向结构115内。可选的，导向结构115固定设置于中心吊顶件110。
这种装配方式与上述的导向结构115设置于边缘侧面113的装配形式类似，不再赘述。
如此，通过导向结构115对外伸梁120导向和限位，并通过导向结构115实现外伸梁120和中心吊顶件110的固定连接，提高了外伸梁120在伸展状态下的稳定性。
在一种可以实现的实施方式中，参照图6-图8所示，外伸梁120的顶部设置铰接板122，中心吊顶件110的顶部设置成对的间隔设置的耳板114。
铰接板122插装于成对的耳板114之间，铰接板122和耳板114上均开设有铰接孔，铰接件1221穿设于铰接板122和耳板114的铰接孔中。
其中，铰接件1221可以为如图6所示的铰接螺栓，也可以为销轴。采用耳板114与铰接板122的配合作为铰接件1221的支撑件，对铰接件提供了更大的抗弯截面模量更大，提升了铰接件1221的强度和刚度。
可以理解的是，如图7所示，为了使外伸梁120能够自由收放，可以选取合理的切削角度，使所有绕铰接件1221旋转的转动部件，刚好能够互相避开，避免了碰撞和干涉，且整体结构简洁高效。
在一些实施例中，还可以选择在中心吊顶件110的顶部设置铰接板122，外伸梁120的顶部设置成对的间隔设置的耳板114，同样可以达到提升了铰接件1221的强度和刚度的有益效果。
在一种可以实现的实施方式中，参照图5所示，薄膜罐吊顶结构100还包括吊杆130，吊杆130连接于中心吊顶件110的顶部。外伸梁120的靠近第二端的位置开设有定位孔125，当外伸梁120处于回折状态，定位孔125和吊杆130之间连接定位绳索124。
其中，吊杆130可以设置带有螺纹的双向调节头，用于在安装过程中调整中心吊顶件110所在的平面的水平度。定位孔125可以开设在外伸梁120的靠近吊杆130的一侧，定位绳索124可以为钢丝。当需要进行焊接施工时，将外伸梁120置于回折状态，外伸梁120的第二端通过定位绳索124绑定在吊杆130上，可以防止外伸梁120因重力下落发生意外。
在一些实施例中，当外伸梁120处于伸展状态，还可以于定位孔125与穹顶之间连接辅助绳索，提高外伸梁120的支撑性。
在一种可以实现的实施方式中，参照图4和8所示，外伸梁120的第二端具有圆倒角。这样，可以避免外伸梁120的端部损伤薄膜罐的薄膜板。
在一种可以实现的实施方式中，参照图9所示，薄膜罐吊顶结构100还包括多个支撑板140，中心吊顶件110和外伸梁120上均固定有支撑板140。
支撑板140可以是平板、波纹板、加筋平板中的一种或多种的组合。如图9所示，中心吊顶件110上的支撑板140为波纹板，外伸梁120上的支撑板140为平板。支撑板140可以通过抽芯铆钉固定，也可以通过焊接或螺栓方式固定。
这样，通过支撑板140为保冷绝热材料提供铺设平面，支撑板140可以将保冷绝热材料的重力均匀的传递到中心吊顶件110和外伸梁120上。
第二方面，本申请实施例提供一种薄膜罐，包括穹顶和上述的薄膜罐吊顶结构100，薄膜罐吊顶结构100的吊杆130的远离中心吊顶件110的一端连接在穹顶上。
其中，薄膜罐吊顶结构100的其他特征与上述一致，不再赘述。
本申请实施例提供的薄膜罐，包括穹顶和薄膜罐吊顶结构100。该薄膜罐吊顶结构100包括中心吊顶件110和外伸梁120。外伸梁120与中心吊顶件110活动连接，且外伸梁120具有伸展状态和回折状态。当需要进行内罐顶部的薄膜板焊接作业时，将外伸梁120置于回折状态，为施工吊篮通过提供必要的施工间隙。当完成内罐顶部的薄膜板焊接作业后，将外伸梁120置于伸展状态，外伸梁120沿中心吊顶件110所在的平面伸展，填补了施工间隙；而且，中心吊顶件110抵接外伸梁120的抵接面121，不仅实现了外伸梁120的可靠定位，还使外伸梁120的支撑能力 得到进一步加强，确保设计满足规范要求的承载能力。
本申请实施例将外伸梁120与中心吊顶件110活动连接，通过展开或收起外伸梁120，实现薄膜罐吊顶结构100的直径可调可变，既能满足薄膜板施工阶段预留施工间隙的要求，又能自动填补外罐的内壁与中心吊顶件110的外边缘的施工间隙，避免在施工过程中对内罐的磕碰损伤，确保整个薄膜罐的气密性和安全性。
本申请实施例结构简单，易于制造、施工、操作和检修，节约材料，不增加薄膜罐吊顶结构100的总重，大幅降低高空施工作业量，提高了薄膜罐的可靠性。
在本申请实施例的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应作广义理解，例如，可以使固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请实施例的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或者位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或者暗示所指的装置或者元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。在本申请的描述中，“多个”的含义是两个或两个以上，除非是另有精确具体地规定。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (10)

  1. 一种薄膜罐吊顶结构，其特征在于，包括中心吊顶件和环所述中心吊顶件的周向分布的多个外伸梁，各所述外伸梁的第一端均具有倾斜设置的抵接面，所述中心吊顶件的边缘侧面倾斜设置，各所述外伸梁的第一端均与所述中心吊顶件活动连接，且各所述外伸梁均具有伸展状态和回折状态；
    在所述外伸梁处于展开状态的情况下，所述抵接面抵接所述边缘侧面，所述外伸梁的第二端向远离所述中心吊顶件的中心的方向伸展，且整个所述外伸梁均沿所述中心吊顶件所在的平面伸展，所述边缘侧面和所述抵接面的底边缘均朝远离所述中心吊顶件的中心的一侧倾斜；
    在所述外伸梁处于回折状态的情况下，所述外伸梁偏向所述中心吊顶件一侧。
  2. 根据权利要求1所述的薄膜罐吊顶结构，其特征在于，所述外伸梁和所述中心吊顶件中，一者设置有导向结构，在所述外伸梁处于所述伸展状态的情况下，另一者至少部分插装于所述导向结构内。
  3. 根据权利要求2所述的薄膜罐吊顶结构，其特征在于，所述导向结构设置于所述中心吊顶件的所述边缘侧面处，在所述外伸梁处于所述伸展状态的情况下，所述外伸梁的靠近所述抵接面的部分插装于所述导向结构内；
    或，所述导向结构设置于所述外伸梁的所述抵接面处，在所述外伸梁处于所述伸展状态的情况下，所述中心吊顶件的靠近所述边缘侧面的部分插装于所述导向结构内。
  4. 根据权利要求1所述的薄膜罐吊顶结构，其特征在于，所述外伸梁与所述中心吊顶件铰接，所述外伸梁与所述中心吊顶件的铰接轴线平行于所述中心吊顶件所在的平面。
  5. 根据权利要求4所述的薄膜罐吊顶结构，其特征在于，所述外伸梁的第一端通过铰接件铰接于所述中心吊顶件的顶部的边缘位置处。
  6. 根据权利要求5所述的薄膜罐吊顶结构，其特征在于，所述外伸梁的顶部，以及所述中心吊顶件的顶部中的一者上设置铰接板，所述外伸梁的顶部，以及所述中心吊顶件的顶部中的另一者上设置成对的间隔设置的耳板；
    所述铰接板插装于成对的所述耳板之间，所述铰接板和所述耳板上均开设有铰接孔，所述铰接件穿设于所述铰接板和所述耳板的所述铰接孔中。
  7. 根据权利要求1-6任一项所述的薄膜罐吊顶结构，其特征在于，所述中心吊顶件包括多个沿所述中心吊顶件的径向方向伸展的径向梁，所述外伸梁的数量与所述径向梁的数量相等，所述外伸梁一一对应地活动连接在所述径向梁的远离所述中心吊顶件的中心的一端。
  8. 根据权利要求1-6任一项所述的薄膜罐吊顶结构，其特征在于，还包括吊杆，所述吊杆连接于所述中心吊顶件的顶部；
    所述外伸梁的靠近所述第二端的位置开设有定位孔，当所述外伸梁处于所述回折状态，所述定位孔和所述吊杆之间连接定位绳索。
  9. 根据权利要求1-6任一项所述的薄膜罐吊顶结构，其特征在于，所述外伸梁的第二端具有圆倒角；
    和/或，所述薄膜罐吊顶结构还包括多个支撑板，所述中心吊顶件和所述外伸梁上均固定有所述支撑板。
  10. 一种薄膜罐，其特征在于，包括穹顶和如权利要求1-9任一项所述的薄膜罐吊顶结构，所述薄膜罐吊顶结构的吊杆的远离所述中心吊顶件的一端连接在所述穹顶上。
PCT/CN2022/137013 2021-12-31 2022-12-06 薄膜罐吊顶结构及薄膜罐 WO2023124838A1 (zh)

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US3352443A (en) * 1965-12-15 1967-11-14 Chicago Bridge & Iron Co Internal suspended insulating ceiling for storage tanks
GB1276628A (en) * 1970-02-20 1972-06-07 Conch Int Methane Ltd Suspended ceilings
JPS56141500A (en) * 1980-04-08 1981-11-05 Ishikawajima Harima Heavy Ind Co Ltd Roof structure of tank equipped with suspended ceiling
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