A tool for assembling thick steel plates of pressure rings of LNG storage tanks

Abstract

The utility model relates to the technical field of steel plate assembly, and specifically to a tool for assembling thick steel plates of pressure rings of LNG storage tanks, comprising a prefabricated jig for pressure rings, a main body of the thick steel plates of the pressure rings arranged on the prefabricated jig for pressure rings, and an assembly mechanism for docking the main body of the thick steel plates of the pressure rings, the assembly mechanism comprising a slot steel plate fixed on the prefabricated jig for pressure rings, a T-shaped steel, a first steel plate and a second steel plate respectively arranged on the slot steel plate, and an open hole connecting plate arranged below the second steel plate, the open hole connecting plate connects the T-shaped steel with the prefabricated jig for pressure rings through a latch, a jack is arranged on the prefabricated jig for pressure rings, and the tool for assembling thick steel plates of pressure rings of storage tanks also includes a positioning mechanism and a fixing mechanism for quickly installing the jack. The technical solution adjusts the assembly size and gap by means of the slot steel plate and the adjusting jack, so that the required assembly size can be achieved and time and labor can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate assembly, in particular to a tool for assembling thick steel plates of pressure rings of LNG storage tanks. Background Art

[0002] With the adjustment of global energy structure and the promotion of clean energy, liquefied natural gas (LNG), as an efficient and clean energy, has played an increasingly important role in the energy market. As a key equipment for storing and transporting LNG, the safety and reliability of LNG storage tanks are of vital importance.

[0003] In the design and manufacturing process of LNG storage tanks, the pressure ring is one of the key pressure-bearing components, and its quality and safety are directly related to the safe operation of the entire tank. The pressure ring is usually made of thick steel plates, and requires precise assembly and welding during the manufacturing process to ensure its structural integrity and pressure-bearing capacity. Traditional assembly methods are often complicated to operate, inefficient, and difficult to ensure assembly accuracy and consistency of welding quality.

[0004] At present, the thickness of the pressure ring steel plate of LNG storage tank is generally 28mm-36mm, and the weight of a single steel plate is about 2t. On-site assembly is carried out through a special assembly jig. The vertical plate is first placed in the middle of the jig by a crane, and then the ring plate is placed on it for assembly adjustment and spot welding. Due to the thickness and weight of the steel plate, it is time-consuming and laborious to adjust the size and assembly gap during assembly, which affects the assembly quality and efficiency. Utility Model Content

[0005] In view of the above problems, a tool for assembling thick steel plates of the pressure ring of an LNG storage tank is provided, which solves the problem that it is time-consuming and labor-intensive to disassemble and assemble the steel plates by using slotted steel plates and jacks.

[0006] In order to solve the problems of the prior art, the utility model provides a tool for assembling thick steel plates of pressure rings of LNG storage tanks, comprising a prefabricated jig for pressure rings, a main body of the thick steel plates of the pressure rings arranged on the prefabricated jig for pressure rings, and an assembling mechanism for docking the main body of the thick steel plates of the pressure rings, the assembling mechanism comprising a slot steel plate fixed on the prefabricated jig for pressure rings, a T-shaped steel, a first steel plate and a second steel plate respectively arranged on the slot steel plate, and an open hole connecting plate arranged below the second steel plate, the open hole connecting plate connects the T-shaped steel to the prefabricated jig for pressure rings through a pin, a jack is arranged on the prefabricated jig for pressure rings, and the tool for assembling thick steel plates of pressure rings of storage tanks also comprises a positioning mechanism and a fixing mechanism for quickly installing the jack.

[0007] Preferably, the positioning mechanism includes a portable positioning plate, a pull-out plate and a first positioning bolt; the portable positioning plate is detachably arranged on the thick steel plate body of the pressure ring; the pull-out plate is slidably arranged on the portable positioning plate in a horizontal straight line direction and has a plurality of first positioning bolts; the first positioning bolt is threadedly arranged on the pull-out plate and is tightly pressed against the thick steel plate body of the pressure ring.

[0008] Preferably, the positioning mechanism further comprises a sliding chamber and a tension spring; the sliding chamber is provided on the portable positioning plate and is used for the pull-out plate to slide; the tension spring is arranged in the sliding chamber and is fixed to the end of the pull-out plate.

[0009] Preferably, the fixing mechanism includes a positioning box, a bidirectional threaded rod and a clamping block; the positioning box is slidably arranged on a portable positioning plate in a horizontal linear direction; the bidirectional threaded rod is arranged on the positioning box and is installed with the positioning box through a bearing; the clamping block is arranged on the positioning box and is threadedly connected to the bidirectional threaded rod.

[0010] Preferably, the fixing mechanism also includes a sliding wheel, a positioning block and a travel groove; the sliding wheel is arranged on the positioning box and has a plurality of them; the positioning block is arranged on the portable positioning plate and has a pair of them; the travel groove is opened on the positioning block, and the groove direction of the travel groove is the same as the sliding direction of the sliding wheel.

[0011] Preferably, the fixing mechanism further comprises a positioning groove and a second positioning bolt; the positioning groove is provided on the sliding wheel; the second positioning bolt is threadedly arranged on the positioning groove and is tightly pressed against the positioning block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model adjusts the assembly size and gap by arranging the slot steel plate and the adjusting jack, which can achieve the required assembly size and save time and labor.

[0014] 2. The utility model provides a portable positioning plate, a pull-out plate and a first positioning bolt, so that the portable positioning plate can be quickly installed and tightened onto the thick steel plate body of the pressure ring.

[0015] 3. The utility model provides a sliding chamber and a tension spring, so that when the portable positioning plate is installed, the pull-out plate can be pulled out along the sliding chamber, and the setting of the tension spring can reset and pull the pulled pull-out block.

[0016] 4. The utility model achieves the goal of quickly installing the jack on the positioning box by arranging the positioning box, the bidirectional threaded rod and the clamping block.

[0017] 5. The utility model provides a sliding wheel, a positioning block and a travel groove, so that when the jack is clamped and installed, it can slide through the travel groove, which is convenient for adjusting the position of the jack.

[0018] 6. The utility model fixes the position of the positioning box after it moves to a certain position by providing the positioning groove and the second positioning bolt, thereby preventing the jack from being displaced during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram from the first perspective of a tool for assembling thick steel plates of the pressure ring of an LNG storage tank.

[0020] Figure 2 It is a three-dimensional structural diagram from the second perspective of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0021] Figure 3 It is an overall three-dimensional structural diagram of a tool for assembling thick steel plates of pressure rings of LNG storage tanks.

[0022] Figure 4 It is a front view structural diagram of a tool for assembling thick steel plates of the pressure ring of an LNG storage tank.

[0023] Figure 5 It is a tool for assembling thick steel plates of LNG tank pressure rings. Figure 4 Side view cutaway three-dimensional structure diagram.

[0024] Figure 6 The present invention is a top view structural diagram of the positioning mechanism and fixing mechanism of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0025] Figure 7 The present invention is a structural diagram of a pull-out plate and a positioning block of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0026] Figure 8 The present invention is a three-dimensional structural diagram of a first positioning bolt and a tension spring of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0027] Fig. 9 The present invention is a front view structural diagram of a positioning box and a clamping block of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0028] Fig.10 It is a tool for assembling thick steel plates of LNG tank pressure rings. Fig. 9 Side view cutaway three-dimensional structure diagram.

[0029] Fig.11 The present invention is a cross-sectional structural diagram of a sliding chamber and a pull-out block of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0030] Fig.12 It is a three-dimensional structure diagram of the positioning box and sliding chamber cutaway of a tool for assembling thick steel plates of a pressure ring of an LNG storage tank.

[0031] Fig.13It is a tool for assembling thick steel plates of LNG tank pressure rings. Fig.12 Enlarged structural diagram at point A in the middle.

[0032] The numbers in the figure are: 1. prefabricated mold of pressure-bearing ring; 2. thick steel plate body of pressure-bearing ring; 3. assembly mechanism; 31. slot steel plate; 4. T-shaped steel; 5. first steel plate; 51. second steel plate; 6. perforated connecting plate; 7. jack; 8. positioning mechanism; 81. portable positioning plate; 82. pull-out plate; 83. first positioning bolt; 84. sliding chamber; 85. tension spring; 9. fixing mechanism; 91. positioning box; 92. bidirectional threaded rod; 93. clamping block; 94. sliding wheel; 95. positioning block; 96. travel groove; 97. positioning groove; 98. second positioning bolt. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] See also Figure 1-Figure 3 As shown, a tool for assembling thick steel plates of pressure rings of LNG storage tanks includes a pressure ring prefabricated jig 1, a pressure ring thick steel plate body 2 arranged on the pressure ring prefabricated jig 1, and an assembling mechanism 3 for docking the pressure ring thick steel plate body 2, the assembling mechanism 3 includes a slot steel plate 31 fixed on the pressure ring prefabricated jig 1, a T-shaped steel 4, a first steel plate 5 and a second steel plate 51 respectively arranged on the slot steel plate 31, and an open hole connecting plate 6 arranged below the second steel plate 51, the open hole connecting plate 6 connects the T-shaped steel 4 with the pressure ring prefabricated jig 1 through a pin, a jack 7 is arranged on the pressure ring prefabricated jig 1, the tank pressure ring thick steel plate assembling tool also includes a positioning mechanism 8 and a fixing mechanism 9 for quickly installing the jack 7, the pressure ring thick steel plate body 2 is composed of a first ring plate 21 and a vertical plate 22, and the assembling mechanism 3 is used to assemble the first ring plate 21 and the vertical plate 22.

[0035] After the pressure-bearing annular plate and the annular plate are placed on the jig, the assembly mechanism 3 is installed. The T-shaped steel 4 in the tooling is welded to the first steel plate 5 and the second steel plate 51. When in use, the upper end is fixed to the jig steel through the slot steel plate 31. The slot steel plate 31 passes through the jig steel. The two perforated connecting plates 6 at the lower end clamp the jig steel web. The jig steel web is pre-drilled with holes when the jig is made. The perforated connecting plates 6 are connected to the jig steel web by round pins. Then a jack 7 is placed in the middle. The assembly size and gap are adjusted by adjusting the jack 7. This can not only achieve the required assembly size, but also save time and effort.

[0036] See also Figure 4-Figure 7As shown, the positioning mechanism 8 includes a portable positioning plate 81, a pull-out plate 82 and a first positioning bolt 83; the portable positioning plate 81 is detachably arranged on the pressure ring thick steel plate body 2; the pull-out plate 82 is slidably arranged on the portable positioning plate 81 in a horizontal straight line direction and has a plurality of first positioning bolts 83; a first positioning bolt 83 is threadedly arranged on the pull-out plate 82 and is tightly pressed against the pressure ring thick steel plate body 2, and a frame block is arranged on the pull-out plate 82 to fit the outer shell of the pressure ring thick steel plate body 2, and the frame block and the pull-out plate 82 are cast-in-one design, and the frame block is easy to be clamped on the pressure ring thick steel plate body 2, and a rubber pad can be arranged on the end of the frame block that is tightly pressed against the pressure ring thick steel plate body 2 to reduce contact damage to the frame block.

[0037] When it is necessary to lift the first steel plate 5 by the jack 7, first place the portable positioning plate 81 on the pressure ring thick steel plate body 2. When the portable positioning plate 81 is completely fitted on the pressure ring thick steel plate body 2, then pull out several pull-out plates 82 from the outside of the portable positioning plate 81 until the portable positioning plate 81 is completely fitted with the pressure ring thick steel plate body 2. Then, by pulling the pull-out plate 82, the frame block set on the pull-out plate 82 can be driven to engage with the outer wall of the pressure ring thick steel plate body 2. Then, turn to the first positioning bolt 83 to threadably tighten the engaged frame block. At this time, the portable positioning plate 81 is completely engaged with the pressure ring thick steel plate body 2.

[0038] See also Fig.11 As shown, the positioning mechanism 8 also includes a sliding chamber 84 and a tension spring 85 ; the sliding chamber 84 is opened on the portable positioning plate 81 and is used for the pull-out plate 82 to slide; the tension spring 85 is arranged in the sliding chamber 84 and fixed to the end of the pull-out plate 82 .

[0039] When the pull-out plate 82 is pulled, it can slide stably horizontally along the sliding chamber 84, and the setting of the tension spring 85 can drive the pull-out plate 82 to provide tension when it contacts the outside of the pressure ring thick steel plate body 2, and can perform preliminary positioning when installed between the portable positioning plate 81 and the pressure ring thick steel plate body 2, which is convenient for the later tightening of the first positioning bolt 83, and after the portable positioning plate 81 is used up, after rotating the first positioning bolt 83, pull the pull-out plate 82 and the frame block outward until the pull-out plate 82 and the frame block are no longer in contact with the pressure ring thick steel plate body 2, at this time the tension spring 85 is stretched, and then when the pull-out block is separated from the outside of the pressure ring thick steel plate body 2, the pull-out block is released again, and the stretched tension spring 85 at this time can pull the pull-out block through the sliding chamber 84 to the portable positioning plate 81, completing the automatic storage of the pull-out block and the installation and positioning effect of the pressure ring thick steel plate body 2.

[0040] See also Figure 6-Figure 9As shown, the fixing mechanism 9 includes a positioning box 91, a bidirectional threaded rod 92 and a clamping block 93; the positioning box 91 is slidably arranged on the portable positioning plate 81 in a horizontal straight line direction; the bidirectional threaded rod 92 is arranged on the positioning box 91 and is installed with the positioning box 91 through a bearing; the clamping block 93 is arranged on the positioning box 91 and is threadedly connected with the bidirectional threaded rod 92, and a rubber anti-sliding block can be arranged on the clamping block 93 to facilitate better clamping and fixing of the jack 7 to prevent displacement during clamping, and a placement block for placing the jack 7 is arranged on the positioning box 91, and the placement block is located above the bidirectional screw rod, and the placement block is used to support the weight of the jack 7, and a pair of guide rods 931 for limiting the smooth sliding of the clamping block 93 are also arranged on the positioning box 91.

[0041] When the jack 7 is needed to lift the first steel plate 5, the jack 7 is first placed on the placement block set on the positioning box 91. When placing the jack 7, first turn to the two-way threaded rod 92, and then drive the clamping block 93 threadedly connected on the two-way threaded rod 92 to move relatively close along the guide rod 931 until the clamping block 93 contacts the jack 7 and clamps and fixes the jack 7, so that the jack 7 can be quickly installed on the positioning box 91, so that the jack 7 can be positioned and used without manual support when in use.

[0042] See also Figure 7-10 As shown, the fixing mechanism 9 also includes a sliding wheel 94, a positioning block 95 and a travel groove 96; the sliding wheel 94 is arranged on the positioning box 91 and has a plurality of them; the positioning block 95 is arranged on the portable positioning plate 81 and has a pair of them; the travel groove 96 is opened on the positioning block 95, and the groove direction of the travel groove 96 is the same as the sliding direction of the sliding wheel 94.

[0043] When the position of the positioning box 91 needs to be moved, the positioning box 91 is first slid horizontally along the travel groove 96 provided on the positioning block 95. At this time, it is convenient to slide the positioning box 91 in the horizontal straight direction to adjust the position of the clamping jack 7 on the positioning box 91.

[0044] See also Figure 12-13 As shown, the fixing mechanism 9 further includes a positioning groove 97 and a second positioning bolt 98 ; the positioning groove 97 is provided on the sliding wheel 94 ; the second positioning bolt 98 is threadedly disposed on the positioning groove 97 and is tightly pressed against the positioning block 95 .

[0045] When it is necessary to fix the moving position of the positioning box 91, when the positioning box 91 is in a sliding state, the second positioning bolt 98 is in a state away from one end of the positioning block 95. In this state, the second positioning bolt 98 can lose the tightening effect on the positioning block 95. In the positioned state, the second positioning bolt 98 can be rotatably inserted into the positioning groove 97 provided on the sliding wheel 94 until the second positioning bolt 98 is tightened against the positioning block 95, and then the positioning box 91 can be fixed after the moving position is moved, thereby increasing the flexibility of the lifting position of the jack 7.

[0046] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A tool for assembling thick steel plates of pressure rings of LNG storage tanks, comprising a pressure ring prefabricated jig (1), a pressure ring thick steel plate body (2) arranged on the pressure ring prefabricated jig (1), and an assembly mechanism (3) for docking the pressure ring thick steel plate body (2); characterized in that: The assembly mechanism (3) comprises a slot steel plate (31) fixedly engaged with a pressure ring prefabricated jig (1), a T-shaped steel (4), a first steel plate (5) and a second steel plate (51) respectively arranged on the slot steel plate (31), and a perforated connecting plate (6) arranged below the second steel plate (51); the perforated connecting plate (6) connects the T-shaped steel (4) to the pressure ring prefabricated jig (1) via a latch; a jack (7) is arranged on the pressure ring prefabricated jig (1); and the storage tank pressure ring thick steel plate assembly tool further comprises a positioning mechanism (8) and a fixing mechanism (9) for quickly installing the jack (7).

2. The tool for assembling thick steel plates for pressure rings of LNG storage tanks according to claim 1 is characterized in that: The positioning mechanism (8) comprises a portable positioning plate (81), a pull-out plate (82) and a first positioning bolt (83); the portable positioning plate (81) is detachably arranged on the pressure ring thick steel plate body (2); the pull-out plate (82) is slidably arranged on the portable positioning plate (81) in a horizontal straight line direction and has a plurality of first positioning bolts (83) which are threadedly arranged on the pull-out plate (82) and are tightly pressed against the pressure ring thick steel plate body (2).

3. The tool for assembling thick steel plates for pressure rings of LNG storage tanks according to claim 1 is characterized in that: The positioning mechanism (8) further comprises a sliding chamber (84) and a tension spring (85); the sliding chamber (84) is provided on the portable positioning plate (81) and is used for the pull-out plate (82) to slide; the tension spring (85) is arranged in the sliding chamber (84) and is fixed to the end of the pull-out plate (82).

4. The tool for assembling thick steel plates for pressure rings of LNG storage tanks according to claim 1 is characterized in that: The fixing mechanism (9) comprises a positioning box (91), a bidirectional threaded rod (92) and a clamping block (93); the positioning box (91) is slidably arranged on the portable positioning plate (81) in a horizontal straight line direction; the bidirectional threaded rod (92) is arranged on the positioning box (91) and is installed with the positioning box (91) via a bearing; the clamping block (93) is arranged on the positioning box (91) and is threadedly connected to the bidirectional threaded rod (92).

5. The tool for assembling thick steel plates for pressure rings of LNG storage tanks according to claim 1 is characterized in that: The fixing mechanism (9) further comprises a sliding wheel (94), a positioning block (95) and a travel groove (96); the sliding wheel (94) is arranged on the positioning box (91) and has a plurality of them; the positioning block (95) is arranged on the portable positioning plate (81) and has a pair of them; the travel groove (96) is opened on the positioning block (95), and the opening direction of the travel groove (96) is the same as the sliding direction of the sliding wheel (94).

6. The tool for assembling thick steel plates for pressure rings of LNG storage tanks according to claim 1, characterized in that: The fixing mechanism (9) further comprises a positioning groove (97) and a second positioning bolt (98); the positioning groove (97) is provided on the sliding wheel (94); the second positioning bolt (98) is threadedly arranged on the positioning groove (97) and is tightly pressed against the positioning block (95).

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