CN217356078U - Sliding support structure in double-wall pipe - Google Patents

Abstract

The application relates to a double-wall pipe inner sliding support structure, which is arranged between an inner pipe and an outer pipe and comprises a plurality of elastic support components surrounding the outer wall of the inner pipe, wherein a fixed connecting piece is arranged between every two adjacent elastic support components; the elastic support assembly comprises a hoop member abutting against the outer wall of the inner pipe, an elastic member positioned on one side of the hoop member, which is far away from the inner pipe, and a support member positioned on one end of the elastic member, which is far away from the hoop member, wherein one end of the support member, which is far away from the elastic member, abuts against the inner wall of the outer pipe; the resilient member is in a compressed state. This application simple structure just can improve shock attenuation effect between inner tube and the outer tube.

Description

Sliding support structure in double-wall pipe

Technical Field

The application relates to the field of conveying pipelines on ships, in particular to a sliding support structure in a double-wall pipe.

Background

In a marine transportation ship, a fuel supply system generally adopts a double-wall pipe gas supply system, the double-wall pipe comprises an outer pipe and an inner pipe, the inner pipe is used for conveying special fuel gas with constant temperature and pressure, the outer pipe is communicated with air, and monitoring points are arranged on the wall of the outer pipe and used for detecting the fuel gas possibly existing so as to achieve the purpose of safety protection.

In the correlation technique, outer tube and inner tube generally adopt the welded technology to combine, and the technology is more complicated, and the equipment that just needs is more, moreover through welded fastening's connected mode for the shock attenuation effect between inner tube and the outer tube is not good, consequently is unfavorable for the structure protection of inner tube and outer tube, has the condition of gas leakage easily.

SUMMERY OF THE UTILITY MODEL

In order to provide a better and simple structure's of shock attenuation effect a bearing structure who is used for between inner tube and the outer tube, this application provides a sliding support structure in double-walled pipe.

The application provides a sliding support structure adopts following technical scheme in double-walled pipe:

a double-wall pipe inner sliding support structure is arranged between an inner pipe and an outer pipe and comprises a plurality of elastic support assemblies surrounding the outer wall of the inner pipe, and a fixed connecting piece is arranged between every two adjacent elastic support assemblies; the elastic supporting assembly comprises a hoop member abutted against the outer wall of the inner pipe, an elastic member positioned on one side of the hoop member, which is far away from the inner pipe, and a supporting member positioned on one end of the elastic member, which is far away from the hoop member, wherein one end of the supporting member, which is far away from the elastic member, is abutted against the inner wall of the outer pipe; the resilient member is in a compressed state.

By adopting the technical scheme, in the shock absorption process, the inner pipe vibrates relative to the outer pipe, and the relative motion between the inner pipe and the outer pipe is buffered through the plurality of elastic supporting assemblies surrounding the outer wall of the inner pipe, so that the shock absorption effect is achieved; compared with the situation that only the elastic part is arranged for damping, the clamp part is arranged, so that the contact area between the sliding support structure and the inner pipe is increased, and the elastic support assembly is connected with the inner pipe more stably; the hoop member is tightly hooped on the outer wall of the inner pipe through the fixed connecting piece, the elastic member and the supporting piece are combined to play a role in setting a distance between the inner pipe and the outer pipe, the elastic member in a compressed state can play a role in buffering when the inner pipe and the outer pipe are vibrated, and the inner pipe and the outer pipe can still be in the set distance after being vibrated; in addition, the supporting piece abutting against the inner wall of the outer pipe is arranged, so that compared with the situation that only the elastic piece is arranged for damping, the contact area between the sliding supporting structure and the inner wall of the outer pipe is increased, and the stability of the sliding supporting structure in abutting between the inner pipe and the outer pipe is further improved; the arrangement of a plurality of elastic support assemblies arranged around the inner tube can enable the inner tube to be damped when the inner tube vibrates in all radial directions.

Preferably, a guide piece with a guide groove is arranged in one side, close to the support piece, of the hoop piece, the support piece is connected in the guide groove in a sliding mode, and the elastic piece is connected between the guide piece and the support piece in a telescopic mode.

Through adopting above-mentioned technical scheme, at the absorbing in-process, support piece slides along the guide to be favorable to making support piece be difficult to take place to deflect, be favorable to improving the stability of structure.

Preferably, a protruding limiting part is arranged on the side wall of one end, extending into the guide part, of the support part, one end, far away from the hoop part, of the guide part protrudes towards the support part, and a blocking part for limiting the limiting part to slide out of the guide groove is formed.

Through adopting above-mentioned technical scheme, the in-process that takes place relative vibrations at inner tube and outer tube, some elastic component are in the state of further compression, and some elastic component then are in the state of relative extension, and spacing portion combines to block the portion and can prevent that support piece from breaking away from the guide to be favorable to guaranteeing the stability of this structure between inner tube and outer tube.

Preferably, one side of the hoop close to the inner pipe is a first arc-shaped abutting surface; the radian of the first arc-shaped abutting surface is larger than that of the outer wall of the inner pipe.

By adopting the technical scheme, when the radian of the inner side surface of the hoop part is larger than that of the outer wall of the inner pipe, and the adjacent hoop parts are connected by using the fixed connecting part in the assembling process, the hoop part can slightly deform so as to gradually attach to the outer wall of the inner pipe, so that the contact area between the hoop part and the outer wall of the inner pipe is increased; and when the radian of the inner side surface of the hoop is large, the inner pipes with different sizes can be adapted, so that the adaptation degree of the structure is improved.

Preferably, one side of the hoop close to the inner pipe is a second arc-shaped abutting surface; the radian of the second arc-shaped abutting surface is equal to that of the outer wall of the inner pipe.

Through adopting above-mentioned technical scheme, the radian that staple bolt spare medial surface is crooked and the radian of inner tube outer wall is equal, can relatively paste the outer wall of embracing the hoop spare at the in-process of installation, and easy to assemble, and the radian equals, can be so that the maximize of embracing hoop spare and inner tube outer wall area of contact, is favorable to improving the stability that this structure supported.

Preferably, one side of the hoop close to the inner pipe is a third arc-shaped abutting surface; the radian of the third arc-shaped abutting surface is smaller than that of the outer wall of the inner pipe.

Through adopting above-mentioned technical scheme, the crooked radian of staple bolt spare medial surface is less, use the in-process of fixed connection spare connection adjacent hoop spare, can make the staple bolt spare take place slight deformation, with the outer wall of laminating the inner tube gradually, and simultaneously, because the slight deformation of hoop spare can produce the trend that the radian is less when wanting to resume, consequently there is static friction power between the outer wall that the staple bolt spare still can and the inner tube, this static friction power can make the staple bolt spare "grasp" the outer wall of inner tube more, thereby the stability that this structure supported has been improved.

Preferably, a hoop gap is arranged between every two adjacent hoop pieces.

Through adopting above-mentioned technical scheme, when using fixed connection spare to connect adjacent elastic support subassembly, connect adjacent hoop spare promptly, at this in-process, the staple bolt clearance is favorable to reserving for the zonulae occludens of adjacent hoop spare and has the fastening allowance to be favorable to making the adjacent hoop spare of connection that fixed connection spare can be inseparabler, thereby be favorable to improving whole bearing structure's stability.

Preferably, the elastic support assemblies are provided in at least three numbers.

Through adopting above-mentioned technical scheme, three elastic support subassembly can utilize triangular stability principle, and reinforcing sliding support structure's stability, and four or the elastic support subassembly more than four can be more stable in the condition of three.

Preferably, an end surface of the support member, which is far away from the elastic member, is a fourth arc-shaped abutting surface, and the fourth arc-shaped abutting surface is abutted to the inner wall of the outer tube.

By adopting the technical scheme, the end face of the supporting piece is attached to the inner wall of the outer pipe, so that the contact area between the supporting piece and the inner wall of the outer pipe is increased to the greatest extent, the supporting piece can be more stably abutted against the outer pipe, and the supporting effect is improved; in addition, because the elastic component is in compression state, support piece's tip and the inner wall of outer tube are the laminating butt of face and face, and have a plurality of support piece butts at the inner wall of outer tube for the whole difficult production skew between outer tube and inner tube that produces of slip bearing structure is favorable to further improving overall structure's support stability.

In summary, the present application includes at least one of the following beneficial technical effects:

the elastic support assemblies are wound on the outer wall of the inner pipe and tightly abut against the inner wall of the outer pipe, so that the vibration between the inner pipe and the outer pipe along each radial direction can be buffered; the hoop piece is adopted to hold the inner pipe tightly, the support piece is abutted against the outer pipe, and the elastic piece in a compressed state buffers the relative vibration between the inner pipe and the outer pipe, so that the structure is simple and the operation is easy;

the guide piece limits the sliding direction of the support piece, so that the support piece can move more stably in the damping process, the deviation is not easy to occur, and the stability of the structure is improved.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present application supported between an inner tube and an outer tube.

Reference numerals are as follows: 1. an inner tube; 2. an outer tube; 3. an elastic support member; 31. a hoop member; 32. an elastic member; 33. a support member; 34. a guide member; 35. a guide groove; 36. a limiting part; 37. a blocking portion; 4. fixing the connecting piece; 5. and 5, holding hoop gaps.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses sliding support structure in double-walled pipe. Referring to fig. 1, the sliding support structure in the double-walled pipe is installed between a cylindrical inner pipe 1 and an outer pipe 2, and the inner pipe 1 and the outer pipe 2 are arranged coaxially. The sliding support structure in the double-wall pipe comprises a plurality of elastic support components 3 with the circumferences surrounding the outer wall of the inner pipe 1 at equal intervals, the elastic support components 3 are identical in structure, and the adjacent elastic support components 3 are connected with each other through fixed connecting pieces 4. In the embodiment of the present application, the elastic support members 3 are three, and form an equilateral triangle structure, and the stability of the sliding support structure is enhanced by using the principle of triangle stability. The number of the elastic support members 3 may be four or more.

The elastic supporting component 3 comprises a hoop member 31 abutting against the outer wall of the inner tube 1, an elastic member 32 located at the center of one side of the hoop member 31 far away from the inner tube 1, and a supporting member 33 located at one end of the elastic member 32 far away from the hoop member 31, wherein one end of the supporting member 33 far away from the elastic member 32 abuts against the inner wall of the outer tube 2. Wherein the resilient member 32 is provided as a spring, which is in a compressed state. In the embodiment of the application, the axes of the three springs are all positioned on the radius of the inner pipe 1 and the outer pipe 2.

In the embodiment of the present application, referring to the cross-sectional structure in fig. 1, the cross section of any hoop member 31 is symmetrical with the diameter of the inner tube 1 as a symmetry line, and a side surface of any hoop member 31 away from the inner tube 1 is set as a plane, which is perpendicular to the symmetry line of the hoop member 31.

The hoop member 31 is fixedly installed at the center of a side plane of the hoop member 31 departing from the inner tube 1, a guide member 34 with a guide groove 35 therein is fixedly installed, and the guide member 34 is of a cylindrical hollow structure. The support member 33 is integrally cylindrical and is connected in the guide groove 35 in a sliding manner, the axial leads of the guide groove 35 and the support member 33 are located on the radius of the outer tube 2, and the support member 33 slides along the guide member 34, so that the support member 33 is not easy to deflect, and the structural stability is improved. The spring is embedded in the guide groove 35, one end of the spring is abutted against the bottom of the guide groove 35, and the other end of the spring is abutted against the end part of the support piece 33 extending into the guide groove 35. In the process of shock absorption, some elastic elements 32 are in a further compressed state, and some elastic elements 32 are in a relatively extended state, in order to prevent the supporting element 33 from sliding out of the guide groove 35 in the process of shock absorption, a protruding limiting part 36 is integrally formed on the side wall of one end, extending into the guide groove 35, of the supporting element 33; the guide 34 is integrally formed with a stopper 37 extending into the guide groove 35 at an opening of the guide groove 35. The blocking portion 37 blocks the stopper portion 36 from sliding out of the guide groove 35, so that the support member 33 does not easily slide out of the guide member 34.

The hoop member 31 is further integrally formed with connecting portions on both sides of the guide member 34, and the connecting portions are provided with fixing holes. The fixing connecting member 4 is provided with a fixing bolt and a fixing nut, and the fixing bolt sequentially passes through the fixing holes of the adjacent hoop members 31 and is then fastened by the fixing nut. All be equipped with anti-skidding gasket between fixing bolt and fixation nut and staple bolt spare 31 for fixed connection 4 is difficult to not hard up at the in-process of vibrations. The placing directions of the fixing bolts are consistent and are all arranged along the clockwise direction or the anticlockwise direction.

One side that the hooping piece 31 is close to the outer wall of the inner pipe 1 is an arc-shaped surface, and the following three conditions can be provided:

in the first case: one side of the hoop member 31 close to the inner tube 1 is a first arc-shaped abutting surface, and the radian of the first arc-shaped abutting surface is greater than that of the outer wall of the inner tube 1. When the crooked radian of first arc butt face is great, at the in-process of equipment, when utilizing fixed connector 4 fastening connection adjacent staple bolt spare 31, staple bolt spare 31 can produce slight deformation to laminate the outer wall of inner tube 1 gradually, thereby increase the area of contact of first arc butt face and 1 outer wall of inner tube gradually. This staple bolt spare 31 of well structure can not unidimensional inner tube 1 of adaptation at the in-process of in-service use, improves the adaptation degree.

In the second case: one side of the hoop member 31 close to the inner tube 1 is a second arc-shaped abutting surface, and the radian of the second arc-shaped abutting surface is equal to that of the outer wall of the inner tube 1. The radian of the outer wall of the inner pipe 1 is completely fitted and adapted to the second arc-shaped abutting surface, and the quick installation is facilitated in the process of actual operation. The two bending radians are equal, can make the contact area that embraces hoop 31 and 1 outer wall contact of inner tube most probably, and the elastic deformation that hoop 31 takes place is less, is favorable to prolonging the life of embracing hoop 31, has improved the stability that this structure supported simultaneously.

In the third case: one side of the hoop member 31 close to the inner tube 1 is a third arc-shaped abutting surface, and the radian of the third arc-shaped abutting surface is smaller than that of the outer wall of the inner tube 1. When the curvature of the third arc-shaped abutting surface is smaller, the hoop 31 may slightly deform and gradually open to fit the outer wall of the inner tube 1 in as much area as possible during the assembling process. Meanwhile, the slight deformation of the hoop member 31 can generate the tendency of recovering the state when the radian is smaller, at the moment, static friction force exists between the hoop member 31 and the outer wall of the inner tube 1, and the static friction force can more tightly grasp the outer wall of the inner tube 1, so that the structural support stability is favorably improved.

In addition, the hoop gap 5 is provided for the equal distance between two adjacent hoop members 31. The convenience is at the in-process of equipment, reserves the space allowance that can supply the fastening for the connection of adjacent armful of hoop spare 31 to be favorable to making the outer wall of the butt inner tube 1 that the armful hoop spare 31 can be inseparabler, further improved overall support structure's stability.

One end face of the support member 33 abutting against the inner wall of the outer tube 2 is a fourth arc-shaped abutting face, and the bending radian of the fourth arc-shaped abutting face is consistent with that of the inner wall of the outer tube 2. The end face of the strut member 33 is attached to the inner wall of the outer tube 2, and the strut member 33 is more stably abutted to the inner wall of the outer tube 2 in a surface-to-surface contact manner, so that relative displacement is not easy to occur. In the process of shock absorption, the elastic piece 32 in a compressed state enables the end faces of the support pieces 33 to be always abutted against the inner wall of the outer tube 2, and the stability of the whole structure is enhanced. In other embodiments, the area of the end of the brace 33 abutting the outer wall of the inner tube 1 may be further enlarged, so that the brace 33 can have more contact area with the inner wall of the outer tube 2, and the structural stability of the brace 33 may be further increased, thereby increasing the structural stability of the whole.

The implementation principle of the sliding support structure in the double-wall pipe in the embodiment of the application is as follows: during installation, a plurality of elastic supporting assemblies 3 are firstly circumferentially and equally spaced around the outer wall of the inner pipe 1, and then the plurality of elastic supporting assemblies 3 are clamped and fixed at the outer wall of the inner pipe 1 by using the fixing connecting pieces 4. Clamping the fixed sliding support structure and the inner pipe 1 by using a special clamping tool, simultaneously contracting the elastic part 32, and then sending the sliding support structure and the inner pipe 1 into a set position in the outer pipe 2; finally, the clamped tool is taken out, the elastic piece is relatively extended, the supporting piece 33 is tightly pressed against the inner wall of the outer pipe 2 under the action of the spring, and the assembly of the inner pipe 1, the outer pipe 2 and the sliding supporting structure is completed.

In the process of shock absorption, the inner tube 1 vibrates relative to the outer tube 2, and the inner tube 1 and the outer tube 2 are finally located at the initially set interval distance after the shock absorption to absorb the relative radial motion between the inner tube 1 and the outer tube 2 by the elastic supporting components 3 surrounding the outer wall of the inner tube 1 and elastically abutting against the inner wall of the outer tube 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a slide bearing structure in double-walled pipe, sets up between inner tube (1) and outer tube (2), its characterized in that: the device comprises a plurality of elastic supporting components (3) surrounding the outer wall of the inner pipe (1), and a fixed connecting piece (4) is arranged between every two adjacent elastic supporting components (3); the elastic support component (3) comprises a hoop member (31) abutted to the outer wall of the inner pipe (1), an elastic member (32) located on one side, far away from the inner pipe (1), of the hoop member (31), and a support member (33) located on one end, far away from the hoop member (31), of the elastic member (32), and one end, far away from the elastic member (32), of the support member (33) is abutted to the inner wall of the outer pipe (2); the resilient member (32) is in a compressed state.

2. A double-walled pipe internal sliding support structure according to claim 1, wherein: the hoop member (31) is close to one side of the support member (33) is provided with a guide member (34) with a guide groove (35) formed therein, the support member (33) is connected in the guide groove (35) in a sliding manner, and the elastic member (32) is connected between the guide member (34) and the support member (33) in a telescopic manner.

3. A double-walled pipe internal sliding support structure according to claim 2, wherein: the supporting piece (33) stretches into one end side wall inside the guiding piece (34) is provided with a protruding limiting portion (36), one end, far away from the hooping piece (31), of the guiding piece (34) faces the supporting piece (33) in a protruding mode, and a blocking portion (37) limiting the limiting portion (36) to slide out of the guiding groove (35) is formed.

4. A double-walled pipe internal sliding support structure according to claim 1, wherein: one side of the hoop member (31) close to the inner pipe (1) is a first arc-shaped abutting surface; the radian of the first arc-shaped abutting surface is larger than that of the outer wall of the inner pipe (1).

5. A double-walled pipe internal sliding support structure according to claim 1, wherein: one side of the hoop member (31) close to the inner pipe (1) is a second arc-shaped abutting surface; the radian of the second arc-shaped abutting surface is equal to that of the outer wall of the inner pipe (1).

6. A double-walled pipe internal sliding support structure according to claim 1, wherein: one side of the hoop member (31) close to the inner pipe (1) is a third arc-shaped abutting surface; the radian of the third arc-shaped abutting surface is smaller than that of the outer wall of the inner pipe (1).

7. A double-walled pipe internal sliding support structure according to any one of claims 4 to 6, wherein: and a hoop clearance (5) is arranged between every two adjacent hoop members (31).

8. A double-walled pipe internal sliding support structure according to claim 1, wherein: the number of the elastic supporting components (3) is at least three.

9. A double-walled pipe internal sliding support structure according to claim 1, wherein: one end face, far away from the elastic piece (32), of the support piece (33) is a fourth arc-shaped abutting face, and the fourth arc-shaped abutting face is attached to the inner wall of the outer pipe (2).

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