CN111674532B - Assembled internal liquid tank in pressure-resistant annular rib cylindrical shell of deep sea equipment - Google Patents
Assembled internal liquid tank in pressure-resistant annular rib cylindrical shell of deep sea equipment Download PDFInfo
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- CN111674532B CN111674532B CN202010558802.XA CN202010558802A CN111674532B CN 111674532 B CN111674532 B CN 111674532B CN 202010558802 A CN202010558802 A CN 202010558802A CN 111674532 B CN111674532 B CN 111674532B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/13—Hulls built to withstand hydrostatic pressure when fully submerged, e.g. submarine hulls
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Abstract
The invention relates to the technical field of deep sea equipment, in particular to an assembled internal liquid tank in a pressure-resistant annular rib cylindrical shell of the deep sea equipment. The cabin comprises a cabin body, wherein the cabin body comprises a top cover plate, transverse wall plates are respectively and vertically welded at the front end and the rear end of the lower end face of the top cover plate, longitudinal wall plates are respectively and vertically welded at the left end and the right end of the lower end face of the top cover plate, the two ends of the longitudinal wall plates are respectively welded with the transverse wall plates at the left end and the right end of the top cover plate, a bottom shell plate is jointly welded at the lower end faces of the two transverse wall plates at the front end and the rear end of the top cover plate and the two longitudinal wall plates at the left end and the right end of the top cover plate, and a base plate is welded at the center of the bottom shell plate. The invention is connected to the pressure-resistant shell in an assembling mode, reduces welding, is convenient to install, can ensure the airtight storage of liquid, can keep deformation coordination with the pressure-resistant shell when the pressure-resistant shell contracts, reduces the stress level, and greatly improves the structural safety of the pressure-resistant shell and deep sea equipment.
Description
Technical Field
The invention relates to the technical field of deep sea equipment, in particular to an assembled internal liquid tank in a pressure-resistant annular rib cylindrical shell of the deep sea equipment.
Background
The structure of deep sea equipment can be divided into whether it can withstand the pressure outside the sea water: a voltage-withstanding structure and a non-voltage-withstanding structure. The pressure-resistant shell is the most important pressure-resistant structure and is mainly used for resisting the pressure outside seawater and providing a normal-pressure working environment for personnel and equipment. Whether the pressure-resistant shell structure is safe or not is directly related to the survival and death of the whole deep sea equipment, and the structural safety of the pressure-resistant shell structure must be ensured. The annular rib cylindrical shell is a typical pressure-resistant shell structure, and consists of a shell and ribs: the shell consists of two hemispherical end sockets and a cylindrical shell; the ribs have two structural forms of being arranged inside the shell and outside the shell, and the ribs mainly play a role of reinforcing structures for the shell.
The internal liquid tank on the deep sea equipment is arranged inside the pressure-resistant shell, does not bear the external pressure of seawater, and belongs to a non-pressure-resistant structure. The internal liquid tank is used for storing liquid required by normal life of people and normal operation of equipment in the pressure-resistant shell, for example, the drinking water tank is used for storing drinking water of people, and the waste water tank is used for storing waste water discharged by the equipment, so that the internal liquid tank is an indispensable component in deep sea equipment.
As shown in fig. 1, a conventional internal liquid tank is directly welded to the inner surface of a pressure housing C through two tank wall panels a and a top panel B to form a closed space for storing liquid, and this structure forms two circumferential welds D and two longitudinal welds E on the inner surface of the pressure housing. As shown in fig. 2, the pressure-resistant housing C may contract and deform when subjected to a great water pressure in the deep sea, and the contraction and deformation includes longitudinal and radial directions along the pressure-resistant housing, if expressed in a rectangular coordinate system, the longitudinal deformation may be expressed as an X-direction deformation, and the radial deformation may be decomposed into a Y-direction deformation and a Z-direction deformation, that is, the pressure-resistant housing may contract and deform in three directions when subjected to a still water external pressure, while the internal liquid tank does not bear a seawater external pressure and does not contract and deform, and the deformation between the internal liquid tank and the pressure-resistant housing is inconsistent, and the internal liquid tank may be subjected to the squeezing action of the pressure-resistant housing, and a higher stress may occur in a weld zone, and particularly in a zone where a longitudinal weld and a circumferential weld intersect, a larger stress concentration may occur, and cracks may be easily generated by the weld and spread to the pressure-resistant housing, thereby compromising the safety of the entire deep sea equipment.
Disclosure of Invention
The applicant aims at the defects in the prior art, and provides an assembled internal liquid tank in a pressure-resistant annular rib cylindrical shell of deep sea equipment, which is reasonable in structure, connected to the pressure-resistant shell in an assembling mode, reduces welding, is convenient to install, can ensure that liquid is stored in a sealed mode, can keep deformation coordination with the pressure-resistant shell when the pressure-resistant shell contracts, reduces the stress level, and greatly improves the structural safety of the pressure-resistant shell and the deep sea equipment.
The technical scheme adopted by the invention is as follows:
an assembled internal liquid tank in a cylindrical shell with a pressure-resistant annular rib of deep sea equipment comprises a tank body, wherein the tank body is a hollow sealed cavity, the tank body comprises a top cover plate, the front end and the rear end of the lower end surface of the top cover plate are respectively and vertically welded with a transverse wall plate, the left end and the right end of the lower end surface of the top cover plate are respectively and vertically welded with a longitudinal wall plate, the two ends of the longitudinal wall plate are respectively welded with the transverse wall plates at the left end and the right end of the top cover plate, the two transverse wall plates at the front end and the rear end of the top cover plate and the lower end surfaces of the two longitudinal wall plates at the left end and the right end are jointly welded with a bottom shell plate, and a base plate is welded at the center of the bottom shell plate;
four corners of the upper end surface of the top cover plate are detachably connected with the guide discs through a plurality of positioning bolts respectively, four corners of the lower end surface of the top cover plate are provided with bases respectively, limit screws are welded on the upper end surfaces of the bases, and the upper ends of the limit screws penetrate through the top cover plate and the guide discs and are connected with limit nuts through threads;
a limiting hole which is communicated up and down is formed in the center of the guide disc, a limiting screw is positioned in the limiting hole, and the limiting hole is a waist-round hole; the center of the top cover plate is determined as the original point of a rectangular coordinate system, the axes of the limiting holes on the two guide discs in the positive direction of the X axis on the top cover plate form included angles with the X axis, and the axes of the limiting holes on the two guide discs in the negative direction of the X axis on the top cover plate are arranged in parallel with the Y axis.
Further, the backing plate comprises a rubber layer, one end surface of the rubber layer is fixedly bonded at the bottom of the bottom shell plate through glue, and the other end surface of the rubber layer is coated to form a polytetrafluoroethylene layer.
Further, the base comprises a horizontally arranged panel, and a rib plate is vertically welded on the lower end face of the panel.
Furthermore, the four corners of the top cover plate are provided with positioning holes which are communicated up and down, the lower end surface of the guide disc is fixedly connected with a positioning plate, the positioning plate is positioned and connected in the positioning holes, and the positioning plate and the positioning holes are in clearance fit.
Further, the top cover plate is of a rectangular structure.
Furthermore, the bottom shell plate is a plate body with a circular arc structure.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, is connected to the pressure-resistant shell in an assembling mode, reduces welding, is convenient to install, can ensure the airtight storage of liquid, can keep deformation coordination with the pressure-resistant shell when the pressure-resistant shell contracts, reduces the stress level, and greatly improves the structural safety of the pressure-resistant shell and deep sea equipment; the invention has strong applicability, and the inner rib or outer rib type circular rib cylindrical shell can be applicable; the invention reduces the welding quantity of the internal liquid tank and the pressure-resistant shell and reduces the uncertainty caused by welding; the invention can store liquid for personnel and equipment in the deep sea equipment, can realize deformation coordination with the pressure-resistant shell, and improves the structural safety of the deep sea equipment.
Drawings
FIG. 1 is a prior art diagram of the arrangement of internal tanks in a pressure housing.
FIG. 2 is a schematic view of the shrinkage deformation of the pressure housing.
Fig. 3 is a perspective view of the present invention.
Fig. 4 is an exploded view of the present invention.
Fig. 5 is an enlarged view of a portion a in fig. 3.
Fig. 6 is an enlarged view of fig. 4 at B.
Fig. 7 is a structural view of the cabin of the present invention.
Fig. 8 is a view showing the construction of the underlay sheet according to the invention.
Fig. 9 is a top view of the enclosure of the present invention.
Fig. 10 is an enlarged view of fig. 9 at C.
Fig. 11 is an enlarged view of fig. 9 at D.
Fig. 12 is a layout view of the present invention applied to a pressure-resistant ribbed cylindrical shell.
Wherein: 1. a cabin body; 101. a top cover plate; 102. a transverse wall plate; 103. a longitudinal wall panel; 104. a bottom shell plate; 2. a base plate; 201. a rubber layer; 202. a polytetrafluoroethylene layer; 3. a base; 301. a panel; 302. a rib plate; 4. a limit screw; 5. a limit nut; 6. a guide plate; 7. positioning the bolt; 8. positioning holes; 9. positioning a plate; 10. a limiting hole; A. a bulkhead plate; B. a top plate; C. a pressure housing; c1, before the pressure-resistant shell deforms; c2, deforming the pressure shell; D. a circumferential weld; E. a longitudinal weld.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 2 and 3, the present invention is clearly illustrated by setting a rectangular coordinate system.
As shown in fig. 3 and 7, the present invention mainly includes a cabin body 1, the cabin body 1 is a sealed cavity with a hollow interior, and liquid necessary for normal life of personnel and normal operation of equipment is stored in the sealed cavity, the cabin body 1 includes a top cover plate 101 with a rectangular structure, the front and rear ends of the lower end surface of the top cover plate 101 are respectively and vertically welded with a transverse wall plate 102, the left and right ends of the lower end surface of the top cover plate 101 are respectively and vertically welded with a longitudinal wall plate 103, and two ends of the longitudinal wall plate 103 are respectively welded with the transverse wall plates 102 at the left and right ends of the top cover plate 101. The bottom shell plates 104 are welded to the lower end faces of the two transverse wall plates 102 at the front end and the rear end of the top cover plate 101 and the two longitudinal wall plates 103 at the left end and the right end together, and the bottom shell plates 104 are plate bodies with circular arc structures. In order to improve the structural strength of the cabin 1, reinforcing ribs can be arranged on the inner side wall of the cabin 1 as required, and the structural strength inside the cabin 1 is improved through the reinforcing ribs.
As shown in fig. 3, the bottom center of the bottom shell plate 104 is welded with a backing plate 2. As shown in fig. 8, the backing plate 2 includes a rubber layer 201, one end surface of the rubber layer 201 is fixed to the bottom of the bottom shell plate 104 by gluing, and the other end surface is coated with a teflon layer 202.
As shown in fig. 3 and 4, four corners of the upper end surface of the top cover plate 101 are detachably connected to the guide plate 6 by a plurality of positioning bolts 7, respectively. Four corners of the lower end face of the top cover plate 101 are respectively provided with a base 3, the upper end face of the base 3 is welded with a limit screw rod 4, and the upper end of the limit screw rod 4 penetrates through the top cover plate 101 and the guide disc 6 and then is connected with a limit nut 5 through threads.
As shown in fig. 5 and 6, the base 3 includes a horizontally disposed face plate 301, and a rib plate 302 is vertically welded to a lower end surface of the face plate 301, and the rib plate 302 can improve the supporting strength of the face plate 301.
As shown in fig. 6, in order to realize the positioning and installation of the guide plate 6 on the top cover plate 101, positioning holes 8 penetrating up and down are formed at four corners of the top cover plate 101, a positioning plate 9 is fixedly connected to the lower end surface of the guide plate 6, the positioning plate 9 is positioned and connected in the positioning holes 8, and the positioning plate 9 and the positioning holes 8 are in clearance fit.
As shown in fig. 6, a vertically through-going limiting hole 10 is formed in the center of the guide disc 6, and the limiting screw 4 is located in the limiting hole 10. As shown in fig. 10 and 11, the stopper hole 10 is a lumbar circular hole, and the distance between the centers of the two semicircles of the lumbar circular hole is d 4.
As shown in fig. 9 to 11, the center of the ceiling plate 101 is defined as the origin of the rectangular coordinate system, and the axes of the limiting holes 10 on the two guide discs 6 in the positive direction of the X axis on the ceiling plate 101 form an included angle with the X axis, where the included angle is α. The axes of the limiting holes 10 on the two guide discs 6 on the top cover plate 101 in the X-axis negative direction are arranged in parallel with the Y axis.
When the base 3 and the top cover plate 101 are installed, displacement compensation at the joint is mainly realized by sliding the limiting screw rod 4 in the limiting hole 10, the deformation of the base 3 in the X direction and the Y direction is marked as dx and dy, and the numerical values of dx and dy can be calculated by a finite element method according to the size and the material property of the annular rib cylindrical shell. The limiting holes 10 on the two guide discs 6 in the X-axis negative direction of the top cover plate 101 are used for compensating the shrinkage deformation in the Y direction, the end of the top cover plate 101 is fixed in the X-axis direction, the other end of the top cover plate is used for supplementing the deformation in the X direction, and the distance d4 between the two semicircular centers of the kidney-shaped holes is equal to the deformation dy in the Y direction of the base 3. The limiting holes 10 on the two guide discs 6 in the positive direction of the X axis of the top cover plate 101 can simultaneously compensate the contraction deformation in the X direction and the Y direction, when the pressure-resistant shell C bears the water pressure to contract under the normal working depth, the material of the pressure-resistant shell C is still in the linear elastic range, the contraction deformation is linear, the deformation in the X direction and the Y direction at the base 3 is synthesized into a section of linear deformation forming a certain angle alpha with the X direction, and the distance d4 between the two semicircular centers of the kidney-shaped holes is equal to the synthesized deformation at the base 3
Angle of rotation
Obviously, the distance d4 between the axes of the oval holes and the centers of the two semicircles at the end forming the angle α with the X direction is larger than that at the other end, and the distances d4 between the centers of the oval holes of the four guide discs 6 can be uniformly set to be d4 from the viewpoint of convenience in batch processing
As a result, after the displacement compensation is completed, the stopper screw 4 at the end where the axis of the oval hole forms an angle α with the X direction slides from one end of the oval hole to the other end, and the stopper screw 4 at the end where the axis of the oval hole is perpendicular to the X direction slides to a position in the middle of the oval hole. The gap d1 between the top cover plate 101 and the panel 301 is equal to dy; the clearance d2 between the longitudinal wall plate 103 and the rib plate 302 is equal to dy; bottom shell plate 104 and inner surface of cylindrical shell (outer rib type)The cylindrical shell) or the inner rib panel (inner rib type cylindrical shell) has a gap d3 equal to the thickness of the backing plate 2, the thickness of the backing plate 2 can be obtained by dividing the compression rate of rubber, the compression rate of rubber can be generally 0.25 at most, and the compression rate of rubber can be obtained by radial shrinkage deformation of the annular rib cylindrical shell.
The invention mainly comprises the following three steps during installation:
A. welding base
Welding the base 3 on the pressure-resistant cylindrical shell with annular ribs, and welding the rib plates 301 of the base 3 on the inner surface of the cylindrical shell when the cylindrical shell with annular ribs is in an outer rib type; when the ribbed cylindrical shell is of the internal rib type, the rib plate 301 of the base 3 is welded to the face plate of the internal rib.
B. Installation guide disc
The positioning plate 9 at the lower end of the guide disc 6 is inserted into the positioning hole 8, and the guide disc 6 is rotated to adjust the axis direction of the waist-shaped limiting hole 10, so that the axes of the limiting holes 10 of the two guide discs 6 at one end of the top cover plate 101 in the X-axis negative direction are parallel to the Y direction, and the axes of the limiting holes 10 of the two guide discs 6 in the X-axis positive direction form a certain angle alpha with the X direction. After the guide disc 6 rotates to the position, a through hole penetrating through the positioning bolt 7 is processed on the guide disc according to the position of the threaded hole in the top cover plate 101, after the through hole is processed, the positioning bolt 7 penetrates through the through hole and then is connected with the threaded hole, and the guide disc 6 and the top cover plate 101 are connected into a whole.
C. Assembly cabin
The base plate 2 is adhered to the bottom of the top cover plate 101, then the top cover plate 101 provided with the guide disc 6 is sleeved on the limiting screw rod 4 of the base 3 from top to bottom, namely the limiting screw rod 4 penetrates through the limiting hole 10 and then the limiting nut 5 is screwed on the limiting screw rod 4, only the panel 301 of the base 3 is required to be adhered to the top cover plate 101 tightly without a gap, and large pretightening force is not required to be applied, so that the installation of the assembled internal liquid tank is realized.
As shown in fig. 12, in the Y direction, a gap d1 is left between the top cover plate 101 and one side of the front plate 301 of the base 3 close to the cylindrical shell, a gap d2 is left between the vertical wall plate 103 and the rib plate 302 of the base 3, and a gap d3 is left between the bottom shell plate 104 and the inner surface of the cylindrical shell (the outer rib type cylindrical shell) or the inner rib panel (the inner rib type cylindrical shell).
When the deep sea equipment works underwater, the pressure-resistant annular rib cylindrical shell of the deep sea equipment is subjected to huge water pressure to generate shrinkage deformation, the base 3 and the pressure-resistant annular rib cylindrical shell are welded, the base 3 and the limiting screw rod 4 can deform along with the pressure-resistant shell, the cabin body 1 does not deform, the limiting screw rod 4 can slide in the limiting hole 10 of the guide disc 6, meanwhile, the polytetrafluoroethylene layer 202 is arranged below the backing plate 2, the inner surface of the pressure-resistant shell (outer rib type cylindrical shell) or the inner rib panel (inner rib type cylindrical shell) can also slide relative to the backing plate 2, and therefore displacement compensation in the X direction and the Y direction is achieved. The backing plate 2 is made of rubber and can deform under the extrusion action of the cylindrical shell (an outer rib type cylindrical shell) or the inner rib panel (an inner rib type cylindrical shell) to compensate the displacement in the Z direction, so that the displacement compensation in three directions is realized, and the deformation coordination of the inner liquid tank and the pressure-resistant annular rib cylindrical shell is realized. After the cylindrical shell of the pressure-resistant annular rib shrinks and deforms, the gaps d1 and d2 disappear, the gap d3 is reduced to the thickness of the compressed back cushion plate 2, the limiting screw rod 4 at one end of the cabin body 1 in the X direction slides to a certain position in the midway of the limiting hole 10, and the limiting screw rod 4 at the other end slides to the other circle center position of the limiting hole 10.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (6)
1. The utility model provides an inside liquid tank of assembled among withstand voltage ring rib cylindrical shell is equipped in deep sea, includes cabin body (1), its characterized in that: the cabin body (1) is a hollow sealed cavity, the cabin body (1) comprises a top cover plate (101), the front end and the rear end of the lower end face of the top cover plate (101) are respectively and vertically welded with a transverse wall plate (102), the left end and the right end of the lower end face of the top cover plate (101) are respectively and vertically welded with a longitudinal wall plate (103), two ends of the longitudinal wall plate (103) are respectively welded with transverse wall plates (102) at the left end and the right end of the top cover plate (101), two transverse wall plates (102) at the front end and the rear end of the top cover plate (101) and the lower end faces of two longitudinal wall plates (103) at the left end and the right end are jointly welded with a bottom shell plate (104), and a base plate (2) is welded at the center of the bottom shell plate (104);
four corners of the upper end face of the top cover plate (101) are detachably connected with the guide disc (6) through a plurality of positioning bolts (7), four corners of the lower end face of the top cover plate (101) are respectively provided with a base (3), a limiting screw rod (4) is welded on the upper end face of the base (3), and the upper end of the limiting screw rod (4) penetrates through the top cover plate (101) and the guide disc (6) and is connected with a limiting nut (5) through threads;
a limiting hole (10) which is communicated up and down is formed in the center of the guide disc (6), the limiting screw (4) is located in the limiting hole (10), and the limiting hole (10) is a waist-round hole; the origin of rectangular coordinate system is decided as with lamina tecti (101) center, the axis and the X axle that lie in spacing hole (10) on two guiding disks (6) in X axle positive direction on lamina tecti (101) form the contained angle, lie in axis and Y axle parallel arrangement of spacing hole (10) on two guiding disks (6) in X axle negative direction on lamina tecti (101).
2. The fabricated internal tank of claim 1 in a deep-sea rig pressure-resistant ribbed cylindrical shell, wherein: the cushion plate (2) comprises a rubber layer (201), one end surface of the rubber layer (201) is bonded and fixed at the bottom of the bottom shell plate (104) through glue, and the other end surface is coated to form a polytetrafluoroethylene layer (202).
3. The fabricated internal tank of claim 1 in a deep-sea rig pressure-resistant ribbed cylindrical shell, wherein: the base (3) comprises a horizontally arranged panel (301), and a rib plate (302) is vertically welded on the lower end face of the panel (301).
4. The fabricated internal tank of claim 1 in a deep-sea rig pressure-resistant ribbed cylindrical shell, wherein: locating holes (8) which are vertically communicated are formed in four corners of the top cover plate (101), a locating plate (9) is fixedly connected to the lower end face of the guide disc (6), the locating plate (9) is located and connected in the locating holes (8), and the locating plate (9) and the locating holes (8) are in clearance fit.
5. The fabricated internal tank in the pressure-resistant annular rib cylindrical shell of the deep sea equipment as claimed in claim 1 or 4, wherein: the top cover plate (101) is of a rectangular structure.
6. The fabricated internal tank of claim 1 in a deep-sea rig pressure-resistant ribbed cylindrical shell, wherein: the bottom shell plate (104) is a plate body with a circular arc structure.
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| CN114248872B (en) * | 2021-12-09 | 2023-04-18 | 中国船舶科学研究中心 | Deep sea is assembled main ballast water tank for ship of considering displacement compensation |
| CN116062132B (en) * | 2023-02-15 | 2024-02-02 | 深海技术科学太湖实验室 | Assembly type pavement structure of deep sea pressure-resistant body |
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| CN108087401A (en) * | 2017-11-29 | 2018-05-29 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of resistance to laminate of deep-sea platform and frame jointing |
| CN108749997A (en) * | 2018-05-23 | 2018-11-06 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The connected unit of elastic displacement compensation and the how resistance to laminate combined type pressure-resistance structure in deep-sea |
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