Tank container for transporting high-load dangerous goods of low-risk low-density electrolyte
Technical Field
The invention relates to a tank container for transporting high-load dangerous goods of low-risk low-density electrolyte.
Background
At present, only a very small number of dangerous liquid cargos can be transported by railways, along with the pushing of revolution iron and the adjustment of an integral transportation structure, and the call for transporting dangerous cargos by tank railways in the market is gradually improved, and the related preparation work of transporting several dangerous liquid cargos by railways is actively propelled by the existing logistics company in China, and the multi-type intermodal transportation equipment of the dangerous liquid cargos is actively propelled by railways. As a member of the manufacturing industry of chemical industry and transportation equipment, chemical products are positively pushed to realize multi-type intermodal transportation and improve transportation economy; development of tank container products with light dead weight, large load and multiple loading medium products is developed, and technology and product storage are very necessary for the explosive demands of liquid dangerous goods transportation in the market after the railway is gradually released on multi-type intermodal transportation equipment of dangerous liquid goods.
In the range of 1CC frame of the standard tank of series 1, the volume of the tank with the current round section is generally not more than 26m 3 And early 26m 3 The circular section tank box of (2) is mainly an international intermodal tank box of T11, and an individual manufacturer designs a non-dangerous tank box, and mainly has the following two defects: on the one hand, the transportation economy is not high, and the volume is smaller, so when small-density media such as glycol, electrolyte and the like are transportedThe economy is not high; on the other hand, the safety of the domestic railway open wagon is not fully considered when the tank box is transported, and the transportation working condition of the domestic railway open wagon is not fully considered when the tank box frame is constructed. Considering the transportation economy of non-hazardous materials such as ethylene glycol and the like and small density medium, the volume of 29m is developed on the market at present 3 The 1CC non-circular section tank box is not provided with a heating insulation structure, the product is developed aiming at glycol media, but glycol is a non-dangerous goods, the product is not designed according to tank cabinet guidelines in IMDG Code, is not applicable to transportation of dangerous liquid goods with small density, and is also not applicable to transportation of small density media with heating and insulation requirements. The cans of the prior art also have the following disadvantages: 1. the fatigue problem of the local structure of the tank box when the tank box is transported by the railway open wagon is not fully considered, particularly the structure discontinuity caused by slotting at the bottom of the end frame of the tank box and perforating at the transition section of the sealing head, the rigidity mutation caused by locally arranging more reinforcing pieces, the serious stress concentration phenomenon and dense fillet weld exist at the rigidity mutation part, the fillet weld is unreasonable in design and has no special manufacturing requirement, the welding defect inevitably exists at the welding joint, and the high risk of fatigue crack generation exists at the defect part due to higher stress concentration and welding residual stress. 2. On one hand, the heating and heat preserving structure is not arranged, and the device is not applicable to the transportation of small-density media with the heating and heat preserving requirements; on the other hand, the product is not designed according to the tank guideline in the IMDG Code, and is not suitable for transporting the dangerous liquid goods with small density.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a tank container for transporting high-load dangerous goods of low-risk low-density electrolyte, and simultaneously solves the following problems existing in the prior art: the volume of the 1CC series standard case is not limited; the tank box with the non-circular section is suitable for less transportation mediums and cannot meet the transportation requirements of low-risk small-density electrolyte gradually appearing in the current market; the problem of strength and fatigue during transportation of open cars is not fully considered during tank design; and under the pressure test working condition, the strength and the rigidity of the square-round section tank body are evaluated by using a traditional evaluation method, so that the weight of the tank is large.
In order to solve the technical problems, the invention adopts the following technical scheme:
tank container for transporting high-load dangerous goods with low-risk low-density electrolyte, wherein the tank container has a volume of 30m 3 The tank guide rule is a T4 large-load dangerous cargo tank box, and can ship dangerous cargos and non-dangerous cargos with the tank guide rule not greater than T4; the tank container comprises a tank body, a frame, a heating device, a heat preservation device, an end ladder and a pavement component;
the tank body is of a non-circular cross-section structure, and a manhole, a safety valve, an air ball valve and a standby port are arranged at the top of the tank body; the bottom of the rear end enclosure of the tank body is provided with a liquid discharging hole, and a discharging valve is arranged at the liquid discharging hole; the tank body adopts an up-loading and down-unloading mode; the inner wall of the tank body is provided with an annular reinforcing ring with an I-shaped section, and the outer wall of the tank body is provided with a longitudinal reinforcing piece with a trapezoid section; the tank body is arranged in the frame, and two ends of the tank body are connected with the frame by adopting a straight cylinder skirt seat; the end ladder is arranged on the rear end frame of the frame, and the pavement component is arranged on the top of the frame; the heating device is arranged on the outer wall of the lower part of the tank body, and the heat preservation device is arranged outside the tank body and the heating device.
The invention also comprises the following technical characteristics:
specifically, the frame comprises a front end frame, a rear end frame, two upper side beams and two lower side beams, wherein the upper side beams and the lower side beams are connected with each other; the front end frame and the rear end frame are square structures formed by encircling an upper end beam, a corner post, a lower end beam and the corner post in sequence, and inclined struts are arranged at four corners of the front end frame and the rear end frame; the corner posts are made of high-strength weather-resistant steel, the lower side beams are rectangular pipes with good vertical deflection resistance, and the upper end beams and the upper side beams are thin-wall section steel.
Specifically, the upper surface of the middle part of the lower end beam of the rear end frame is provided with a U-shaped groove so as to facilitate the installation of a discharge valve and reserve enough operation space for the discharge valve; a through length patch is arranged on the bottom surface of a lower end beam of the rear end frame, a U-shaped bending piece is welded on the inner surface of a U-shaped groove, a welding seam at the U-shaped groove is formed between the U-shaped bending piece and the lower end beam, a beveled fillet weld is adopted in the front-back direction, the rear side of the welding seam is polished to enable the welding seam not to exceed the inner side surface of the lower end beam, and the two ends of the welding seam are subjected to beveled butt welding and fillet welding and are polished to be flush with the upper surface of the lower end beam; the U-shaped bending piece has bending resistance, and the welding seam comprehensively considers the influence of the welding seam characteristics and stress concentration on the fatigue strength of the welding seam when the U-shaped bending piece is connected with the lower end beam, and carries out corresponding polishing treatment.
Specifically, the heating device comprises a plurality of longitudinal heating pipes and a plurality of circumferential heating pipes; the longitudinal heating pipes are longitudinally arranged on the outer wall of the lower part of the tank body, and a plurality of longitudinal heating pipes are uniformly distributed along the circumferential direction at intervals; the annular heating pipes are arranged on the outer wall of the lower part of the tank body along the annular shape, are arranged at two ends of the longitudinal heating pipe and are communicated with the longitudinal heating pipe; the annular heating pipe is respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are arranged on two sides below the rear end frame, and a drain valve is arranged at the lowest position of the air outlet pipe.
Specifically, high-temperature-resistant anti-corrosion primer is sprayed in the range of a heating area at the lower part of the tank body corresponding to the heating device.
Specifically, the heat preservation device comprises a rock wool plate, a polyurethane circumferential support and an outer wrapping plate; the rock wool plate is paved outside the tank body and the heating device, the polyurethane circumferential support is arranged outside the tank body along the circumferential direction, and the outer cover plate is coated outside the rock wool plate and the polyurethane circumferential support; the rock wool boards are paved and compacted and are fixed by strapping tapes; the outer wrapping plate is made of glass fiber reinforced plastic, the lap joint of the outer wrapping plate is bonded by butyl caulking glue, and the edge of the outer wrapping plate is sealed and filled by silicone weather-proof glue; and laying rib-clamping aluminum foil paper in the areas where rock wool boards cannot be laid at the middle parts of the two sides of the cylinder body of the tank body and the centers of the sealing heads, and adhering and fixing the edges and the edge joints of the rib-clamping aluminum foil paper by adopting aluminum foil adhesive tapes.
Specifically, the discharge valve includes root emergency stop valve, centre gripping formula butterfly valve, tip BSP connects and blanking cover, and root emergency stop valve possesses handle, remote mechanical operating system and the fusible alloy stopper that should deal with emergent fire situation and realize urgent shutoff, sets up gas-liquid linkage locking device between discharge valve and top air ball valve, ensures before opening the discharge valve, and air ball valve is in the open state, avoids jar body to take place to hold down the pressure unstability risk, sets up the protection box in discharge valve department.
Specifically, the bottom disconnection of the straight skirt that is connected between jar body rear end and the rear end frame provides installation space for the discharge valve, and sets up the discharge valve protection box in the disconnection department, and straight skirt disconnection edge adopts reinforcement backing plate and reinforcement to press the limit, prevents to appear tearing the risk in the head disconnection department of straight skirt and jar body.
Specifically, the end ladder is arranged on the right side of the rear end frame and comprises two ladder posts and anti-skid pedals, the ladder posts and the anti-skid pedals are all made of thin-wall stainless steel square tubes, and the end ladder is connected with the rear end frame through bolts, so that the end ladder is convenient to detach and replace; the pavement assembly comprises a pavement and a pavement support, wherein the pavement is connected with the pavement support through bolts, the width of the pavement is 475mm, the pavement support is made of aluminum alloy and is fixed on the upper side beam through a root support, the pavement support is connected with the root support through bolts, and the root support is welded with the upper side beam.
Specifically, the manhole and the safety valve are arranged at the top of the tank body and close to the central position, and the periphery of the manhole and the safety valve is provided with a protection box I; the air ball valve and the standby port are arranged at the position, close to the rear part, of the top of the tank body, and when dangerous liquid cargoes are transported, the butterfly valve is arranged on the standby port for feeding, and the periphery of the air ball valve and the periphery of the standby port are provided with the protection box II so as to protect the valve body.
Compared with the prior art, the invention has the following technical effects:
the invention has a volume of 30m 3 The tank guide rule is a T4 large-load dangerous cargo tank box, can load and transport dangerous cargos and non-dangerous cargos which are not more than T4 and compatible with the tank materials and have no special regulations, and is suitable for roads, railways, waterways and intermodal transportation at home and abroad.
The invention realizes that the internal volume of a given frame is limited, the tank body adopts a non-circular section structure form, and particularly adopts a square section, and the tank body with the square section has the most obvious characteristics that the cross section size of the frame can be fully utilized, so that the maximization of the volume is realized; when the design is carried out, the longitudinal size limit of the frame is considered, the front end enclosure is positioned in the front end frame, the heat-insulating shell can be arranged and is not interfered with the lower diagonal bracing of the end frame, and the tank body is basically positioned at the limit position; the back end frame reserves the installation and operation space of the bottom unloading combination valve, the length of the cylinder is limited, and the volume is increasedTo achieve 30m 3 。
The research and development of the tank container for large-load dangerous goods is very important for actively responding to the national push-to-multi intermodal policy and the transportation requirement of the market for small-density low-risk liquid goods. The railway transportation system can rapidly respond to the railway transportation demands of dangerous liquid cargos possibly occurring at any time in the future, can also promote the transportation economy of the small-density dangerous liquid cargos and non-dangerous liquid cargos, and also improves the transportation safety of realizing multi-type intermodal transportation at home and abroad.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view of a can according to the present invention;
FIG. 4 is a partial schematic view of a tank back head according to the present invention;
FIG. 5 is a schematic diagram of a frame of the present invention;
FIG. 6 is a back end frame schematic of the present invention;
FIG. 7 is a schematic view of the partial grooving reinforcement of the lower end beam of the rear end frame of the present invention;
FIG. 8 is a schematic view of the present invention for partial grooving reinforcement welding of the lower end beam of the rear end frame.
The meaning of each reference numeral in the figures is:
1. the novel fire protection device comprises a tank body, a frame, a heating device, a heat preservation device, an end ladder, a walk assembly, a manhole, a safety valve, an air ball valve, a spare port, a discharge valve, an annular reinforcing ring, a longitudinal reinforcing piece, a straight skirt, a reinforcing backing plate, a reinforcing piece, a protective box I, a protective box II and a protective box 19, wherein the tank body, the frame, the heating device, the heat preservation device, the end ladder, the walk assembly, the manhole, the safety valve, the air ball valve, the spare port, the discharge valve, the annular reinforcing ring, the longitudinal reinforcing piece, the straight skirt, the reinforcing backing plate, the reinforcing and the protective box I and the protective box 19. 111. Root emergency cut-off valve, 112, clamping butterfly valve, 113, end BSP joint and plug cover; 21. front end frame, 22, rear end frame, 23, upper side beam, 24, lower side beam; 221. a full length patch, a 222. U-shaped bending piece; 31. longitudinal heating tube, 32. Circumferential heating tube.
Detailed Description
The following specific embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 8, the present embodiment provides a tank container for transporting high-load dangerous goods with low-risk low-density electrolyte, the tank container having a volume of 30m 3 The tank guide rule is T4, and can be used for shipping dangerous goods and non-dangerous goods which are not more than T4 and are compatible with the tank container material and have no special regulations. The tank container comprises a tank body 1, a frame 2, a heating device 3, a heat preservation device 4, an end ladder 5 and a pavement component 6.
The tank body 1 is of a non-circular cross-section structure, and the volume is 30m of the volume limit of a 1CC series standard tank 3 The method comprises the steps of carrying out a first treatment on the surface of the The top of the tank body 1 is provided with a manhole 7, a safety valve 8, an air ball valve 9 and a standby port 10; the bottom of the rear end enclosure of the tank body 1 is provided with a liquid discharging hole, and a 45-degree combined discharging valve 11 is arranged at the liquid discharging hole; the tank body 1 adopts an up-loading and down-unloading mode; the inner wall of the tank body 1 is provided with an annular reinforcing ring 12 with an I-shaped section, and the outer wall of the tank body 1 is provided with a longitudinal reinforcing piece 13 with a trapezoid section; the tank body 1 is arranged in the frame 2, and two ends of the tank body 1 are connected with the frame 2 by adopting a straight skirt 14; an end ladder 5 is arranged on the rear end frame 22 of the frame 2, and a pavement component 6 is arranged on the top of the frame 2, so that a user can conveniently perform related operation and related maintenance of the box top on the top overflow box; the heating device 3 is arranged on the outer wall of the lower part of the tank body 1, and the heat preservation device 4 is arranged outside the tank body 1 and the heating device 3.
The frame outline 6058x2438x2591mm, the frame 2 includes a front end frame 21, a rear end frame 22, and two upper side members 23 and two lower side members 24 connecting the two; the front end frame 21 and the rear end frame 22 are square structures formed by encircling an upper end beam, a corner post, a lower end beam and a corner post in sequence, and inclined struts are arranged at four corners of the front end frame 21 and the rear end frame 22; the corner posts are made of high-strength weather-resistant steel, the lower side beams 24 are rectangular pipes with good vertical deflection resistance, and the upper end beams and the upper side beams 23 are made of thin-wall steel according to various working conditions and failure investigation in actual use.
The upper surface of the middle part of the lower end beam of the rear end frame 22 is provided with a U-shaped groove so as to conveniently install the discharge valve 11 and reserve enough operation space for the discharge valve; the grooving part adopts two reinforcement: the first pass is to set up the long complement plate 221 on the bottom surface of the lower end beam of the back end frame 22, ensure the longitudinal integrity of the lower end beam, can prevent the situation of the local abrasion of the bottom plane of the lower end beam after light weight in the load transmission area working condition and open wagon working condition at the same time; the second way of welding a thicker U-shaped bending piece 222 on the inner surface of the U-shaped groove comprehensively considers the problems of fatigue strength reduction of a welded structure and the like caused by the adverse effects of welding seam stacking and rigidity mutation and no additional treatment of a fillet weld, adopts a U-shaped bending piece formed at one time, the U-shaped bending piece 222 and the lower end beam form a welding seam at the U-shaped groove, adopts the beveled fillet weld in the front-back direction and the rear side to polish the welding seam so that the welding seam does not exceed the inner side surface of the lower end beam, adopts the beveled butt welding and the fillet weld at the two ends and polishes the welding seam until the welding seam is flush with the upper surface of the lower end beam; the U-shaped bending piece 222 has good bending resistance, and the welding seam when being connected with the lower end beam comprehensively considers the influence of welding seam characteristics and stress concentration on the fatigue strength of the welding seam, and performs corresponding polishing treatment, and the lower end beam is provided with a U-shaped groove, so that enough operation space is reserved in the direction of an emergency cut-off valve opening handle, and the valve is conveniently opened and maintained in later period.
The heating device 3 comprises a plurality of longitudinal heating pipes 31 and circumferential heating pipes 32; the longitudinal heating pipes 31 are longitudinally arranged on the outer wall of the lower part of the tank body 1, and a plurality of longitudinal heating pipes 31 are uniformly distributed at intervals along the circumferential direction; the annular heating pipes 32 are arranged on the outer wall of the lower part of the tank body 1 along the annular direction, the annular heating pipes 32 are arranged at two ends of the longitudinal heating pipe 31, and the annular heating pipes 32 are communicated with the longitudinal heating pipe 31; the annular heating pipe 32 is respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are arranged on two sides below the rear end frame 22, and a drain valve is arranged at the lowest position of the air outlet pipe.
The high-temperature-resistant anti-corrosion primer is sprayed in the range of the heating area of the lower part of the tank body 1 corresponding to the heating device 3.
More specifically, in consideration of the transportation and storage applicability of certain low-density media with boiling points at normal temperature, a parallel structure is formed by arranging a plurality of longitudinal heating pipes and annular heating pipes at two ends of the bottom in a 120-degree wrap angle range at the bottom of the tank body, the heat transfer efficiency and the heat radiation area are comprehensively considered, the longitudinal heating pipes are reasonably arranged along the annular direction, and the steam distribution uniformity in the heating area and the heating effectiveness of the radiation area are ensured. The steam inlet groove and the steam outlet groove are arranged close to the bottom unloading end, the leading-out steam inlet pipe and the pipe orifice of the exhaust pipe are arranged on two sides of the end frame of the lower unloading end, so that the operation of a user is facilitated, and the drain valve is arranged at the lowest part of the exhaust pipe and used for timely discharging condensed water in the initial stage of heating. In order to solve the problem that water is accumulated in the annular heating groove near the other end of the bottom of the tank body, the cross section of a longitudinal heating pipe near the central position of the bottom of the tank body and connected with the horizontal area of the annular groove is optimized, the connection mode of the longitudinal heating pipe and the annular grooves at the two ends is changed from socket type fillet welds to butt welds, the lower unloading end of the tank body is lower than the other end of the tank body, and condensed water in the annular groove can be further transferred into a drainage annular groove through the longitudinal heating pipe and discharged to a drain valve through a drain pipe. Considering that the heat preservation material is in direct contact with austenitic stainless steel, stress corrosion caused by chloride ion corrosion environment is more likely to occur in a heating area, and high-temperature-resistant anti-corrosion primer is sprayed in the range of the heating area at the bottom of the tank body.
The heat preservation device 4 comprises a rock wool plate, a polyurethane circumferential support and an outer wrapping plate; the rock wool board is paved outside the tank body 1 and the heating device 3, the polyurethane circumferential support is arranged outside the tank body 1 along the circumferential direction, and the outer cover board is coated outside the rock wool board and the polyurethane circumferential support; the rock wool boards are paved and compacted and are fixed by strapping tapes; the outer wrapping plate is made of glass fiber reinforced plastic, the lap joint of the outer wrapping plate is bonded by butyl caulking glue, and the edge of the outer wrapping plate is sealed and filled by silicone weather-proof glue; and (3) paving rib-clamped aluminum foil paper in the middle parts of two sides of the cylinder body of the tank body 1 and in the areas where rock wool boards cannot be paved out of the centers of the sealing heads, and adhering and fixing the edges and the edge joints of the rib-clamped aluminum foil paper by adopting aluminum foil adhesive tapes.
More specifically, in order to ensure the heating effect and avoid repeated heating and discharging during short-distance transportation, a heat preservation structure with lighter dead weight, moderate cost and good heat preservation performance is arranged outside the tank body and the heating area. The heat-insulating material of the heat-insulating structure adopts rock wool boards with moderate density, the thickness of the rock wool boards is paved at the space allowable positions of 40mm, the reinforced aluminum foil paper is paved in the areas where the rock wool cannot be paved in the middle parts of the two sides of the cylinder body and the small range of the center of the seal head, the edges of the aluminum foil paper and the edge joints of the aluminum foil paper are fixedly bonded by adopting aluminum foil adhesive tapes, and the rock wool boards are compactly paved and are fixed by adopting strapping tapes; the rock wool board is externally provided with an outer wrapping board, the lap joint of the outer wrapping board is bonded by butyl caulking glue, and the edge of the outer wrapping board is sealed and filled by silicone weather-proof glue; the outer wrapping plate is made of glass fiber reinforced plastic with light weight, sufficient strength and good shock resistance; and a plurality of high-density polyurethane is arranged along the direction of the tank body to serve as a circumferential support, and the multi-channel high-density polyurethane and the tightly packed rock wool ensure the overall shape of the heat preservation shell.
The discharge valve 11 comprises a root emergency cut-off valve 111, a clamping butterfly valve 112, an end BSP joint and a plug cover 113, wherein the root emergency cut-off valve 111 is provided with a handle which is manually opened, a remote mechanical operating system and a fusible alloy plug which can realize emergency cut-off for emergency fire situations; the gas-liquid linkage locking device is arranged between the discharge valve 11 and the top air ball valve 9, so that before the discharge valve 11 is opened, the air ball valve 9 is in an opened state, the risk of pressure holding and instability of the tank body 1 is avoided, and the discharge valve protection box 19 is arranged at the discharge valve 11.
The bottom disconnection of the straight skirt 14 that is connected between jar body 1 rear end and the rear end frame 22 provides installation space for discharge valve 11, and sets up discharge valve protection box 19 in the disconnection department, and straight skirt 14 disconnection edge adopts reinforcement backing plate 15 and reinforcement 16 to carry out the blank holder, prevents to appear tearing the risk in straight skirt 14 and jar body 1's head disconnection department.
The end ladder 5 is arranged on the right side of the rear end frame 22, the end ladder 5 comprises two ladder posts and anti-skid pedals, the ladder posts and the anti-skid pedals are all thin-wall stainless steel square tubes, and the end ladder 5 is connected with the rear end frame 22 through bolts, so that the disassembly and the replacement are convenient; the pavement component 6 comprises a pavement and a pavement support, wherein the pavement and the pavement support are connected through bolts, the pavement is 475mm in width and made of aluminum alloy, the pavement support is fixed on the upper side beam 23 through a root support, the pavement support and the root support are connected through bolts, the root support and the upper side beam 23 are welded, and convenience in assembly and later replacement of the heat preservation device is improved.
The manhole 7 and the safety valve 8 are arranged at the top of the tank body 1 and close to the central position, and a protection box I17 is arranged at the periphery of the manhole 7 and the safety valve 8; the air ball valve 9 and the spare port 10 are arranged at the position close to the rear part of the top of the tank body 1, when dangerous liquid cargoes are transported, a butterfly valve is arranged on the spare port 10 for feeding, and a protection box II18 is arranged on the periphery of the air ball valve 9 and the spare port 10 so as to protect the valve body.
The invention realizes that the internal volume of a given frame is limited, the tank body adopts a non-circular section structure, the tank body of the embodiment adopts a square section, and the tank body with the square section has the most obvious characteristics that the cross section size of the frame can be fully utilized, and the maximization of the volume is realized; when the design is carried out, the longitudinal size limit of the frame is considered, the front end enclosure is positioned in the front end frame, the heat-insulating shell can be arranged and is not interfered with the lower diagonal bracing of the end frame, and the tank body is basically positioned at the limit position; the back end frame reserves the installation and operation space of the bottom unloading combination valve, the length of the cylinder is limited, and the volume is 30m 3 。
The invention realizes smaller self weight increase and larger bearing capacity improvement, the tank guide rule of the tank box and the tank cabinet is T4, the lowest hydrostatic test pressure is 0.265MPa, and compared with the common liquid cargo tank box, the test pressure is increased by 77%; in order to increase the deformation capacity of the square-round section tank body for resisting internal and external pressure, a plurality of I-shaped annular reinforcing rings are uniformly distributed in the tank body along the calculated length direction, a plurality of trapezoidal section longitudinal reinforcing members are arranged outside the tank body along the annular direction, the strength and stability of the square-round section tank body under internal and external pressure are improved through common reinforcement of the inner part and the outer part, the strength of the tank body under the pressure test working condition is evaluated by adopting an analytical design method, the stability of the tank body under the internal and external pressure working condition is comprehensively evaluated, the rigidity of the tank body is reasonably enhanced, and the tank body and parts connected with the tank body are ensured not to be unstable under the typical working condition.
On the premise of ensuring that the overall strength of the tank meets the requirement, the tank is designed in a light-weight mode, the place with larger safety margin is designed in a light-weight mode, structural optimization is performed on a high-risk position side, the rigidity is enabled to be in smooth transition, and the welding residual stress and the stress concentration degree are reduced.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.