CN215488127U - Double-wall pipe fixing device - Google Patents
Double-wall pipe fixing device Download PDFInfo
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- CN215488127U CN215488127U CN202121522085.1U CN202121522085U CN215488127U CN 215488127 U CN215488127 U CN 215488127U CN 202121522085 U CN202121522085 U CN 202121522085U CN 215488127 U CN215488127 U CN 215488127U
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- wall pipe
- pipe
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Abstract
The utility model discloses a double-wall pipe fixing device which comprises a clamping ring assembly, a plurality of groups of inner clamping ring adjusting groups and a plurality of groups of outer ring adjusting groups, wherein the inner clamping ring of the clamping ring assembly covers the inner pipe of a double-wall pipe, an S-shaped outer clamping ring of the clamping ring assembly is embedded into the outer pipe of the double-wall pipe, and arc-shaped rubber gaskets are covered and fixed on the upper end and the lower end of the S-shaped outer clamping ring. One end of the inner clamping ring adjusting set is respectively propped against the outer circular surface of the double-wall pipe inner pipe, and the middle part of the inner clamping ring adjusting set is fixed on the inner clamping ring. One end of the outer ring adjusting group respectively penetrates through the S-shaped outer clamping ring and then abuts against the inner circle of the double-wall pipe, and the other end of the outer ring adjusting group is fixed on the outer circle of the inner clamping ring. The utility model has low manufacturing cost. The assembly, disassembly and adjustment are very convenient. The double-wall pipe fitting is suitable for double-wall pipes of various specifications, has good universality, can be conveniently installed and detached on site, and improves the working efficiency.
Description
Technical Field
The utility model relates to a fixing device for a natural gas conveying pipeline, in particular to a fixing device for a natural gas conveying double-wall pipeline of a marine dual-fuel engine, and belongs to the technical field of dual-fuel engines.
Background
The clean gas power fuel represented by natural gas is widely applied to a dual-fuel engine for a ship increasingly, the natural gas belongs to dangerous gas, and each classification society clearly requires that all natural gas conveying pipelines arranged in a cabin are required to be double-wall pipes, wherein the inner-layer pipes are used for conveying the natural gas, and the outer-layer cavity is used for ventilation or filled with inert gas with pressure higher than the gas pressure in the inner-layer pipes so as to avoid the danger of natural gas leakage.
The existing double-wall pipe fixing device can only be used for double-wall pipes of one specification, does not have universality, and simultaneously, because of manufacturing errors and assembly errors of parts, the fixing device is difficult to mount and dismount, and must be scrapped and reprocessed when in serious condition, so that the production progress is seriously influenced, and the manufacturing cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-wall pipe fixing device which is convenient to assemble and disassemble, is suitable for a plurality of double-wall pipes and has good universality.
The utility model is realized by the following technical scheme:
a double-wall pipe fixing device comprises a clamping ring assembly, a plurality of groups of inner clamping ring adjusting groups and a plurality of groups of outer ring adjusting groups, wherein ear plates on two sides of the clamping ring assembly are fixedly connected into an assembly structure with an inner clamping ring and an S-shaped outer clamping ring through bolts and nuts respectively; the inner clamping ring covers the inner pipe of the double-wall pipe, the S-shaped outer clamping ring is embedded in the outer pipe of the double-wall pipe, and the arc-shaped rubber gaskets are fixedly covered on the upper end and the lower end of the S-shaped outer clamping ring; one end of the inner clamping ring adjusting set is respectively abutted against the outer circular surface of the inner pipe of the double-wall pipe, the middle part of the inner clamping ring adjusting set is fixed on the inner clamping ring, one end of the outer ring adjusting set is respectively abutted against the inner circular surface of the inner pipe of the double-wall pipe after penetrating through the S-shaped outer clamping ring, and the other end of the outer ring adjusting set is fixed on the outer circular surface of the inner clamping ring.
The object of the utility model is further achieved by the following technical measures.
Furthermore, the inner clamping ring adjusting group comprises an inner stud, a planar rubber gasket, a spring and a butterfly nut, one end of the inner stud penetrates through the inner clamping ring and is fixedly connected with the center of one side of the bottom plate of the planar rubber gasket, and the spring is sleeved on one end of the inner stud and is positioned between one side of the rubber gasket and the inner circular surface of the inner clamping ring; the butterfly nut is screwed on the middle part of the inner stud and is propped against the outer circular surface of the inner clamping ring, and the rubber plates of the rubber gasket are respectively propped against the outer circle of the double-wall pipe.
Furthermore, the outer ring adjusting group comprises a base nut, an outer stud, a rotating nut, an inner retainer ring and an outer retainer ring, and one end of the base nut is respectively welded and fixed on two opposite sides of the outer circular surface of the inner clamping ring; the rotary nut is welded and fixed on the middle part of the outer stud, one end of the outer screw column is screwed and fixed in the base nut, and the other end of the outer screw column penetrates through a waist-shaped hole at the corresponding position of the S-shaped outer clamping ring and is fixed on the S-shaped outer clamping ring through an inner retaining ring and an outer retaining ring which are clamped at the two sides of the waist-shaped hole respectively. The center of the base nut is communicated with the air holes which penetrate through the S-shaped outer clamping ring.
Furthermore, the outer retainer ring is a shaft retainer ring, two opposite sides of the inner retainer ring respectively extend outwards to form wing plates, one wing plate is of an integral structure, the other wing plate is of an elastic structure which is longitudinally split into two halves and transversely penetrates through an expansion opening hole, the expansion opening hole is connected with a central hole of the inner retainer ring, and the diameter of the expansion opening hole is smaller than that of the central hole of the inner retainer ring; the end face distance A of the two wing plates is larger than the width B of the waist-shaped hole.
The utility model adopts a plurality of groups of inner clamping ring adjusting groups which are uniformly distributed between the inner clamping ring inner circular surface of the clamping ring assembly and the double-wall pipe inner circular surface, and a plurality of groups of outer ring adjusting groups which are uniformly distributed between the inner clamping ring outer circular surface and the double-wall pipe outer circular surface to fix the double-wall pipe inner pipe and the double-wall pipe outer pipe. Compact structure and low manufacturing cost. The assembly, disassembly and adjustment are very convenient. The double-wall pipe fitting is suitable for double-wall pipes of various specifications, has good universality, can be conveniently installed and detached on site, and improves the working efficiency.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of the present invention installed within a double-walled pipe;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is an enlarged sectional view A-A of FIG. 2;
FIG. 4 is an enlarged sectional view B-B of FIG. 2;
fig. 5 is an enlarged structural view of the inner retainer ring.
Detailed Description
The utility model is further illustrated by the following figures and examples.
In the description of the present invention, terms indicating orientation or position such as "upper", "lower", "inside", "outside", etc., are based on the orientation shown in the drawings only for the purpose of simplifying the description, and do not indicate or imply that the present invention must have a specific orientation or position.
As shown in fig. 1 to 4, the present embodiment is used to fix a double-walled pipe with an outer diameter D = 114mm and an inner diameter D =56mm, and the present invention can be used to fix a plurality of specifications of double-walled pipes with an outer diameter D less than or equal to 220mm and an inner diameter D less than or equal to 100 mm. The embodiment comprises a clamp ring assembly 1, wherein two side ear plates 111 of the clamp ring assembly 1 are respectively fixedly connected into an assembly structure with an inner clamp ring 11 and an S-shaped outer clamp ring 12 through bolts 2 and nuts 3. The double-wall pipe inner pipe outer pipe comprises an S-shaped outer clamping ring 12, an inner clamping ring 11, an outer clamping ring 20, an arc-shaped rubber gasket 121 and a double-wall pipe inner pipe 10, and is characterized by further comprising 4 groups of inner clamping ring adjusting groups 4 uniformly distributed between the inner circular surface of the inner clamping ring 11 and the outer circular surface of the double-wall pipe inner pipe 10 and 2 groups of outer ring adjusting groups 5 uniformly distributed between the outer circular surface of the inner clamping ring 10 and the inner circular surface of the double-wall pipe outer pipe 20, wherein the inner clamping ring 11 coats the double-wall pipe inner pipe 10, the S-shaped outer clamping ring 12 is embedded into the double-wall pipe outer pipe 20, and the arc-shaped rubber gasket 121 is fixed on the upper end and the lower end of the S-shaped outer clamping ring 12 in a coating mode. One end of the inner clamping ring adjusting set 4 is respectively abutted against the outer circular surface of the double-wall pipe inner pipe 10, the middle part of the inner clamping ring adjusting set 4 is fixed on the inner clamping ring 11, one end of the outer ring adjusting set 5 is respectively abutted against the inner circle of the double-wall pipe outer pipe 20 after penetrating through the S-shaped outer clamping ring 12, and the other end of the outer ring adjusting set 5 is fixed on the outer circle of the inner clamping ring 11.
The inner clamping ring adjusting set 4 comprises an inner stud 41, a plane rubber gasket 42, a spring 43 and a butterfly nut 44, wherein one end of the inner stud 41 penetrates through the inner clamping ring 11 and is fixedly connected with the center of one side of a bottom plate 421 of the plane rubber gasket 42, and the spring 43 is sleeved on one end of the inner stud 41 and is positioned between one side of the rubber gasket 42 and the inner circular surface of the inner clamping ring 11. The wing nuts 44 are screwed on the middle part of the inner threaded column 41 and abut against the outer circular surface of the inner clamping ring 11, and the rubber plates 422 of the rubber gasket 42 abut against the outer circular surface of the double-walled pipe inner pipe 10, respectively.
The outer ring adjusting group 5 comprises a base nut 51, an outer threaded column 52, a rotating nut 53, an inner retainer ring 54 and an outer retainer ring 55, wherein one end of the base nut 51 is respectively welded and fixed on two opposite sides of the outer circular surface of the inner clamping ring 11. The rotating nut 53 is fixed on the middle part of the outer stud 52 in a welding way, one end of the outer stud 52 is screwed into the base nut 51, the other end of the outer stud 52 passes through the waist-shaped hole 122 at the corresponding position of the S-shaped outer clamping ring 12, and the outer stud is fixed on the S-shaped outer clamping ring 12 through the inner retaining ring 54 and the outer retaining ring 55 which are clamped at the two sides of the waist-shaped hole 122 respectively. In order to avoid the difficulty in screwing in or screwing out the outer stud 52 caused by the formation of a closed space, the center of the base nut 51 is communicated with the air hole 123 penetrating through the S-shaped outer clamping ring 12. The S-shaped outer clamp ring 12 and the arc-shaped rubber gasket 121 can move together with the outer stud 52 to achieve fine adjustment of the diameter of the S-shaped outer clamp ring 12, and the arc-shaped rubber gasket 121 is tightly supported on the inner circular surface of the double-wall pipe outer pipe 20, and the arc-shaped rubber gasket 121 is used for protecting the double-wall pipe outer pipe 20 and plays a certain role in vibration reduction.
The outer retainer ring 55 is a shaft retainer ring, as shown in fig. 5, two opposite sides of the inner retainer ring 54 respectively extend outward to form wing plates 541, one of the wing plates 541 is an integral structure, the other wing plate 541 is an elastic structure which is longitudinally split into two halves and traverses the expansion opening hole 542, the expansion opening hole 542 is connected with the central hole 543 of the inner retainer ring, and the diameter of the expansion opening hole 542 is smaller than that of the central hole 543 of the inner retainer ring. The distance a between the end surfaces of the two wing plates 541 is greater than the width B of the kidney-shaped hole 122, so that the outer stud 52 is axially positioned on the arc-shaped rubber gasket 121 and can slightly move when the arc-shaped rubber gasket 121 elastically deforms, thereby achieving a better fixing effect on the double-wall pipe outer pipe 20.
The installation process of the utility model is as follows:
1) installing 4 inner clamping ring adjusting groups 4, firstly selecting inner clamping rings 11 and 4 groups of inner studs 41 and springs 43 with corresponding specifications according to the outer diameter of the double-wall pipe inner pipe 10 and the inner diameter of the double-wall pipe outer pipe 20, then vertically and fixedly connecting the center of one side of a bottom plate 421 of a plane rubber gasket 42 with one end of a corresponding inner stud 41, penetrating the springs 43 into one end of the inner stud 41, then penetrating the other end of the inner stud 41 through a corresponding inner clamping ring round hole 112, and finally rotating a butterfly nut 44 from the other end of the inner stud 41 to the middle part of the inner stud 41 to enable the butterfly nut 44 to abut against the excircle of the inner clamping ring 11, wherein the springs 43 are positioned between one side of the rubber gasket 42 and the inner circular surface of the inner clamping ring 11, and sequentially completing the installation of the other 3 inner clamping ring adjusting groups 4 by the same method.
2) Installing the clamp ring assembly 1, sleeving the inner clamp rings 11 provided with 4 inner clamp ring adjusting groups 4 on the excircle of the double-wall pipe inner pipe 10, enabling the lower end surfaces of the inner clamp rings 11 to be higher than the upper end surfaces of the double-wall pipe outer pipes 20, respectively rotating the butterfly nuts 44, enabling the springs 43 to respectively push the outer side surfaces of the respective corresponding rubber gaskets 42 to abut against the excircle of the double-wall pipe inner pipe 10, and enabling the rubber gaskets 42 to ensure that the clamp ring assembly cannot freely move or slide.
3) Installing the outer ring adjusting group 5, firstly, punching a conical punch into the expanding hole to open the inner retainer ring 54, thereby respectively installing the inner retainer ring 54 in the middle of the corresponding outer threaded column 52, then respectively penetrating the lower end of the outer threaded column 52 through the waist-shaped hole 122 of the S-shaped outer clamping ring 12 and screwing the lower end of the outer threaded column into the base nut 51, so that the wing plates 541 on the two sides of the inner retainer ring 54 are parallel to the length direction of the waist-shaped hole 122, ensuring that the wing plates 541 penetrate through the waist-shaped hole 122, respectively cladding and fixing the arc-shaped rubber gasket 121 on the arc-shaped edge of the S-shaped outer clamping ring 12, ensuring that the notches of the arc-shaped rubber gasket 121 are respectively clamped on the corresponding arc-shaped edges, the port at one end of the arc-shaped rubber gasket 121 is respectively flush with the end face at one end of the corresponding arc-shaped edge, and the gasket countersunk hole 1211 just penetrates through the head of the corresponding outer threaded column 52. The rotating nuts 53 are respectively rotated while the corresponding arc-shaped rubber gaskets 121 are manually pressed, so that the heads of the corresponding outer columns 52 extend out of the gasket countersunk holes 1211, and then the outer retaining rings 55 are fixed on the heads of the corresponding outer columns 52. And continuing to rotate the corresponding rotating nut 53 until the inner retainer ring 54 is higher than the inner side surface of the corresponding waist-shaped hole 122, respectively adjusting the position of the inner retainer ring 54, so that the wing plates 541 at the two ends of the inner retainer ring 54 are respectively perpendicular to the waist-shaped hole 122, and completing the installation of the outer ring adjusting group 5.
4) Adjusting the inner clamping ring adjusting group 4 and the outer ring adjusting group 5, respectively rotating the rotating nuts 53 of the outer ring adjusting group 5 until the outer ring adjusting group 5 can easily pass through the inner hole of the double-wall pipe outer pipe 20, then respectively loosening the nuts 3 on the lug plates 111 and respectively screwing the butterfly nuts 44 of the inner ring adjusting group 4 until the outer ring adjusting group 5 can easily pass through the inner hole of the double-wall pipe outer pipe 20, so that the clamping ring assembly 1 slowly slides downwards until the upper end surface of the arc-shaped rubber gasket 121 is 18-23 mm lower than the end surface of the double-wall pipe outer pipe 20, and then screwing the nuts 3 on the lug plates 111. Further adjusting 4 wing nuts 44 crosswise to make the plane rubber gasket 121 tightly attached to the outer circular surface of the double-wall pipe inner pipe 10, and finally loosening the rotary nut 53 to make the arc rubber gasket 422 tightly attached to the inner circular surface of the double-wall pipe outer pipe 20, thereby completing the adjustment of the inner clamping ring adjusting group 4 and the outer ring adjusting group 5.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (5)
1. A double-wall pipe fixing device comprises a clamping ring assembly, wherein ear plates on two sides of the clamping ring assembly are fixedly connected into an assembly structure with an inner clamping ring and an S-shaped outer clamping ring through bolts and nuts respectively; the method is characterized in that: the double-wall pipe inner tube and double-wall pipe outer tube adjusting device comprises a double-wall pipe inner tube, a double-wall pipe outer tube and a double-wall pipe outer tube, and is characterized by further comprising a plurality of groups of inner clamping ring adjusting groups and a plurality of groups of outer ring adjusting groups, wherein the plurality of groups of inner clamping ring adjusting groups are uniformly distributed between the inner circular surface of the inner clamping ring and the outer circular surface of the double-wall pipe inner tube, and the plurality of groups of outer ring adjusting groups are uniformly distributed between the outer circular surface of the inner clamping ring and the inner circular surface of the double-wall pipe outer tube; one end of the inner clamping ring adjusting set is respectively abutted against the outer circular surface of the inner pipe of the double-wall pipe, the middle part of the inner clamping ring adjusting set is fixed on the inner clamping ring, one ends of the plurality of groups of inner clamping ring adjusting sets respectively penetrate through the S-shaped outer clamping rings and then are abutted against the inner circular surface of the inner pipe of the double-wall pipe, and the other end of the outer ring adjusting set is fixed on the outer circular surface of the inner clamping ring.
2. The double-walled pipe fixture of claim 1, wherein: the inner clamping ring adjusting set comprises an inner stud, a planar rubber gasket, a spring and a butterfly nut, one end of the inner stud penetrates through the inner clamping ring and is fixedly connected with the center of one side of the bottom plate of the planar rubber gasket, and the spring is sleeved at one end of the inner stud and is positioned between one side of the rubber gasket and the inner circular surface of the inner clamping ring; the butterfly nut is screwed on the middle part of the inner stud and is propped against the outer circular surface of the inner clamping ring, and the rubber plates of the rubber gasket are respectively propped against the outer circle of the double-wall pipe.
3. The double-walled pipe fixture of claim 1, wherein: the outer ring adjusting group comprises a base nut, an outer stud, a rotating nut, an inner check ring and an outer check ring, and one end of the base nut is respectively welded and fixed on two opposite sides of the outer circular surface of the inner clamping ring; the rotary nut is welded and fixed on the middle part of the outer stud, one end of the outer screw column is screwed and fixed in the base nut, and the other end of the outer screw column penetrates through a waist-shaped hole at the corresponding position of the S-shaped outer clamping ring and is fixed on the S-shaped outer clamping ring through an inner retaining ring and an outer retaining ring which are clamped at the two sides of the waist-shaped hole respectively.
4. A double-walled pipe fitting according to claim 3 wherein: the center of the base nut is communicated with the air holes which penetrate through the S-shaped outer clamping ring.
5. A double-walled pipe fitting according to claim 3 wherein: the outer retainer ring is a shaft retainer ring, two opposite sides of the inner retainer ring respectively extend outwards to form wing plates, one wing plate is of an integral structure, the other wing plate is of an elastic structure which is longitudinally split into two halves and transversely penetrates through an expansion opening hole, the expansion opening hole is connected with a central hole of the inner retainer ring, and the diameter of the expansion opening hole is smaller than that of the central hole of the inner retainer ring; the end face distance A of the two wing plates is larger than the width B of the waist-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121522085.1U CN215488127U (en) | 2021-07-06 | 2021-07-06 | Double-wall pipe fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121522085.1U CN215488127U (en) | 2021-07-06 | 2021-07-06 | Double-wall pipe fixing device |
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| Publication Number | Publication Date |
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| CN215488127U true CN215488127U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121522085.1U Active CN215488127U (en) | 2021-07-06 | 2021-07-06 | Double-wall pipe fixing device |
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| CN (1) | CN215488127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560248A (en) * | 2022-12-08 | 2023-01-03 | 招商局金陵船舶(威海)有限公司 | Marine liquefied natural gas filling channel connecting structure and connecting method |
-
2021
- 2021-07-06 CN CN202121522085.1U patent/CN215488127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560248A (en) * | 2022-12-08 | 2023-01-03 | 招商局金陵船舶(威海)有限公司 | Marine liquefied natural gas filling channel connecting structure and connecting method |
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