CN218063716U - Novel double-layer steel pipe - Google Patents

Abstract

The utility model relates to a novel double-deck steel pipe, including the steel pipe body, the steel pipe body includes inner tube and outer tube, the outer tube sleeve establish the inner tube outside and with the laminating of inner tube, the both ends of steel pipe body are provided with the fixed head, the fixed head includes solid fixed ring and go-between, gu fixed ring and go-between coaxial coupling, the go-between surface is provided with the external screw thread, the terminal surface of inner tube is provided with the spread groove, the inner wall of spread groove is provided with the internal thread with the go-between adaptation, go-between screw thread is pegged graft in the spread groove, the terminal surface that gu fixed ring is connected with the go-between is laminated with the terminal surface of steel pipe body, gu fixed ring's external diameter is the same with the external diameter of outer tube, gu fixed ring's internal diameter is the same with the internal diameter of inner tube. The end face, close to the outer pipe, of the fixing ring is provided with a first sealing assembly, and the end face, close to the inner pipe, of the fixing ring is provided with a second sealing assembly. The utility model has the advantages of can reduce the material extravagant, practice thrift manufacturing cost.

Description

Novel double-layer steel pipe

Technical Field

The utility model relates to a steel pipe technical field, concretely relates to novel double-deck steel pipe.

Background

The steel pipe is a hollow cylindrical steel material having a hollow cross section and a length much greater than the diameter or circumference. Steel pipes are not only used for transporting fluids and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, but also are economical steels. The steel pipe is used to manufacture the net frame, the supporting column and the mechanical support of the building structure, so that the weight can be reduced, the metal can be saved by 20-40%, and the industrialized mechanized construction can be realized. The steel pipe is used for manufacturing the highway bridge, so that steel can be saved, the construction is simplified, the area of a coating protective layer can be greatly reduced, and the investment and the maintenance cost are saved.

The steel pipes in the prior art are all of an integrated structure, and if the surfaces of the steel pipes are corroded or worn, the corroded or worn whole steel pipe needs to be discarded, so that a large amount of materials are wasted, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a novel double-deck steel pipe to steel pipe surface corrosion among the solution prior art or wearing and tearing back need change whole root steel pipe and abandon, not only extravagant material increases manufacturing cost's problem moreover.

(II) technical scheme

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a novel double-deck steel pipe, includes the steel pipe body, its characterized in that: the steel pipe body includes inner tube and outer tube, the outer tube housing is established in the inner tube outside and is laminated with the inner tube, the both ends of steel pipe body are provided with the fixed head, the fixed head is including solid fixed ring and go-between, gu fixed ring and go-between coaxial coupling, the go-between surface is provided with the external screw thread, the terminal surface of inner tube is provided with the spread groove, the inner wall of spread groove is provided with the internal thread with the go-between adaptation, go-between screw is pegged graft in the spread groove, gu the terminal surface that solid fixed ring and go-between are connected is laminated with the terminal surface of steel pipe body.

Further, the outer diameter of the fixing ring is the same as the outer diameter of the outer pipe, and the inner diameter of the fixing ring is the same as the inner diameter of the inner pipe.

Further, be provided with first seal assembly on the terminal surface that solid fixed ring is close to the outer tube, first seal assembly includes first annular and first sealing washer, first annular is seted up on solid fixed ring is close to the terminal surface of outer tube, first sealing washer sets up in first annular, first sealing washer is fixed ring and outer tube clamp tightly.

Further, a second sealing assembly is arranged on the end face, close to the inner tube, of the fixing ring, the second sealing assembly comprises a second ring groove and a second sealing ring, the second ring groove is formed in the end face, close to the inner tube, of the fixing ring, the second sealing ring is arranged in the second ring groove, and the second sealing ring is clamped by the fixing ring and the inner tube.

Further, the lateral wall of inner tube is provided with the guiding orientation pole along self length direction, the inner wall of inner tube set up with the guiding orientation groove of guiding orientation pole adaptation, the guiding orientation pole is located the guiding orientation groove and laminates with the inner wall of guiding orientation groove.

(III) beneficial technical effects

To sum up, the utility model discloses a following beneficial technological effect:

1. in the utility model, because the steel pipe body comprises an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe and is jointed with the inner pipe, the two ends of the steel pipe body are provided with fixed heads, the fixed heads comprise a fixed ring and a connecting ring, the fixed ring is coaxially connected with the connecting ring, the outer surface of the connecting ring is provided with an external thread, the end surface of the inner pipe is provided with a connecting groove, the inner wall of the connecting groove is provided with an internal thread matched with the connecting ring, the connecting ring is inserted in the connecting groove by a thread, and the end surface of the fixed ring connected with the connecting ring is jointed with the end surface of the steel pipe body; through the arrangement, the fixing heads at the two ends of the steel pipe body can be matched with each other to connect and fix the outer pipe and the inner pipe, when the steel pipe body is corroded or collided, the corroded and collided part only appears on the outer pipe but not on the inner pipe in the using process, so that the fixing heads can be rotated to split the fixing heads and the steel pipe body, then the outer pipe and the inner pipe are separated, the outer pipe is replaced, and finally the fixing heads are connected to the two ends of the steel pipe body again, therefore, the steel pipe can be replaced only on the outer pipe after being corroded or abraded on the surface of the steel pipe body, the whole steel pipe does not need to be replaced, and the effects of saving materials and reducing cost can be achieved;

2. the end face, close to the outer pipe, of the fixing ring is provided with the first sealing assembly, the first sealing assembly comprises a first annular groove and a first sealing ring, the first annular groove is formed in the end face, close to the outer pipe, of the fixing ring, the first sealing ring is arranged in the first annular groove, and the first sealing ring is clamped between the fixing ring and the outer pipe; through the arrangement, the first sealing assembly can prevent outside liquid from flowing into the steel pipe body from a gap between the fixing ring and the outer pipe, and the effect of improving the reliability of the steel pipe body is achieved;

3. the end face, close to the inner pipe, of the fixing ring is provided with the second sealing assembly, the second sealing assembly comprises a second annular groove and a second sealing ring, the second annular groove is formed in the end face, close to the inner pipe, of the fixing ring, the second sealing ring is arranged in the second annular groove, and the second sealing ring is clamped between the fixing ring and the inner pipe; through the arrangement, the second sealing assembly can prevent liquid in the steel pipe body from flowing out of a gap between the fixing ring and the inner pipe, and the effect of improving the reliability of the steel pipe body is achieved;

4. the second annular groove is positioned at one side of the connecting ring close to the central shaft of the second sealing assembly, so that the second sealing assembly can prevent liquid in the steel pipe body from flowing into the connecting groove, the dryness of the connecting ring is ensured, and the liquid dripping when the fixing head is detached is reduced;

5. the outer side wall of the inner tube is provided with a guide positioning rod along the length direction of the inner tube, the inner wall of the inner tube is provided with a guide positioning groove matched with the guide positioning rod, and the guide positioning rod is positioned in the guide positioning groove and is attached to the inner wall of the guide positioning groove; through the arrangement, the guide positioning rod can guide the outer pipe when the outer pipe is sleeved, and can prevent the outer pipe from rotating relative to the inner pipe, so that the stability of connection between the outer pipe and the inner pipe is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a novel double-layer steel pipe in the embodiment;

FIG. 2 is a schematic view of the internal structure of a novel double-layer steel pipe in the embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a structural view of an end face of a steel pipe body in the example.

Description of reference numerals:

in the figure, 1, a steel pipe body; 2. an inner tube; 3. an outer tube; 4. a fixed head; 41. a fixing ring; 42. a connecting ring; 5. connecting grooves; 6. a first seal assembly; 61. a first ring groove; 62. a first seal ring; 7. a second seal assembly; 71. a second ring groove; 72. a second seal ring; 8. a guide positioning rod; 9. and (6) a guide positioning groove.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example (b):

referring to fig. 1-4, the utility model discloses a novel double-layer steel pipe, which comprises a steel pipe body 1. The steel pipe body 1 includes inner tube 2 and outer tube 3, 3 covers of outer tube are established at inner tube 2 outside and are laminated with inner tube 2, the both ends of steel pipe body 1 are provided with fixed head 4, fixed head 4 is including solid fixed ring 41 and go-between 42, gu fixed ring 41 is provided with the external screw thread with go-between 42 coaxial coupling go-between 42 surface, the terminal surface of inner tube 2 is provided with spread groove 5, the inner wall of spread groove 5 is provided with the internal thread with go-between 42 adaptation, go-between 42 screw thread grafting is in spread groove 5, gu fixed ring 41 is laminated with the terminal surface of being connected of go-between 42 and the terminal surface of steel pipe body 1.

Through the aforesaid setting, the fixed head 4 at 1 both ends of steel pipe body can cooperate the use to be connected outer tube 3 and inner tube 2 fixedly, in the use, when steel pipe body 1 takes place the corrosion or causes the time of colliding with, the corrosion only can appear on outer tube 3 and can not appear on inner tube 2 with the position of colliding with, consequently rotatable fixed head 4 with fixed head 4 and 1 split of steel pipe body, then with outer tube 3 and the separation of inner tube 2 and change outer tube 3, connect fixed head 4 again at 1 both ends of steel pipe body at last can.

In order to make the pipe diameter of the entire steel pipe uniform, the outer diameter of the fixing ring 41 is the same as the outer diameter of the outer pipe 3, and the inner diameter of the fixing ring 41 is the same as the inner diameter of the inner pipe 2.

The end face, close to the outer tube 3, of the fixing ring 41 is provided with a first sealing assembly 6, the first sealing assembly 6 comprises a first annular groove 61 and a first sealing ring 62, the first annular groove 61 is formed in the end face, close to the outer tube 3, of the fixing ring 41, the first sealing ring 62 is arranged in the first annular groove 61, and the first sealing ring 62 is clamped by the fixing ring 41 and the outer tube 3. Through the above arrangement, the first sealing assembly 6 can prevent the external liquid from flowing into the steel pipe body 1 from the gap between the fixing ring 41 and the outer pipe 3, and plays a role in improving the reliability of the steel pipe body 1.

The end face, close to the inner pipe 2, of the fixing ring 41 is provided with a second sealing assembly 7, the second sealing assembly 7 comprises a second ring groove 71 and a second sealing ring 72, the second ring groove 71 is formed in the end face, close to the inner pipe 2, of the fixing ring 41, the second sealing ring 72 is arranged in the second ring groove 71, and the second sealing ring 72 is clamped between the fixing ring 41 and the inner pipe 2; with the above arrangement, the second seal unit 7 can prevent the liquid in the steel pipe body 1 from flowing out through the gap between the fixing ring 41 and the inner pipe 2, and further improves the reliability of the steel pipe body 1.

Further, the second annular groove 71 is located on one side of the connection ring 42 close to the central axis of the second sealing assembly 7, so that the second sealing assembly 7 can prevent the liquid in the steel pipe body 1 from flowing into the connection groove 5, thereby ensuring the dryness of the connection ring 42 and reducing the liquid dripping when the fixing head 4 is detached.

In addition, a guide positioning rod 8 is arranged on the outer side wall of the inner tube 2 along the length direction of the inner tube, a guide positioning groove 9 matched with the guide positioning rod 8 is formed in the inner wall of the inner tube 2, and the guide positioning rod 8 is positioned in the guide positioning groove 9 and attached to the inner wall of the guide positioning groove 9; through the above arrangement, the guide positioning rod 8 can guide the outer tube 3 when the outer tube 3 is sleeved, and can prevent the outer tube 3 from rotating relative to the inner tube 2, so that the stability of connection between the outer tube 3 and the inner tube 2 is improved.

The working principle of the embodiment is as follows: in this embodiment, the steel pipe body 1 includes the inner pipe 2 and the outer pipe 3, the outer pipe 3 is sleeved outside the inner pipe 2 and attached to the inner pipe 2, the two ends of the steel pipe body 1 are provided with the fixing heads 4, the fixing heads 4 include the fixing rings 41 and the connecting rings 42, the fixing rings 41 are coaxially connected with the connecting rings 42, the outer surfaces of the connecting rings 42 are provided with external threads, the end surface of the inner pipe 2 is provided with the connecting grooves 5, the inner walls of the connecting grooves 5 are provided with internal threads matched with the connecting rings 42, the connecting rings 42 are inserted into the connecting grooves 5 in a threaded manner, and the end surface of the fixing rings 41 connected with the connecting rings 42 is attached to the end surface of the steel pipe body 1; through the aforesaid setting, the fixed head 4 at 1 both ends of steel pipe body can cooperate the use to be connected outer tube 3 and inner tube 2 fixedly, in the use, when steel pipe body 1 takes place the corrosion or causes to collide with the time, the corrosion only can appear at outer tube 3 and can not appear on inner tube 2 with colliding with the position, consequently rotatable fixed head 4 with fixed head 4 and 1 split of steel pipe body, then with outer tube 3 and 2 separation of inner tube and change to outer tube 3, connect fixed head 4 at 1 both ends of steel pipe body again at last, to sum up, the steel pipe that this embodiment proposed can only change and need not wholly to change the steel pipe to outer tube 3 after self surface corrosion or wearing and tearing, consequently can play material saving, reduce cost's effect.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (6)

1. The utility model provides a novel double-deck steel pipe, includes steel pipe body (1), its characterized in that: the steel pipe body (1) comprises an inner pipe (2) and an outer pipe (3), the outer pipe (3) is sleeved on the outer portion of the inner pipe (2) and is attached to the inner pipe (2), fixing heads (4) are arranged at two ends of the steel pipe body (1), the fixing heads (4) comprise fixing rings (41) and connecting rings (42), the fixing rings (41) are coaxially connected with the connecting rings (42), outer threads are arranged on the outer surface of the connecting rings (42), connecting grooves (5) are formed in the end face of the inner pipe (2), inner threads matched with the connecting rings (42) are arranged on the inner wall of the connecting grooves (5), the connecting rings (42) are inserted into the connecting grooves (5) in a threaded mode, and the end faces, connected with the connecting rings (42), of the fixing rings (41) are attached to the end face of the steel pipe body (1).

2. The novel double-layer steel pipe according to claim 1, characterized in that: the outer diameter of the fixing ring (41) is the same as that of the outer tube (3), and the inner diameter of the fixing ring (41) is the same as that of the inner tube (2).

3. The novel double-layer steel pipe as claimed in claim 2, wherein: the end face, close to the outer tube (3), of the fixing ring (41) is provided with a first sealing assembly (6), the first sealing assembly (6) comprises a first annular groove (61) and a first sealing ring (62), the first annular groove (61) is formed in the end face, close to the outer tube (3), of the fixing ring (41), the first sealing ring (62) is arranged in the first annular groove (61), and the first sealing ring (62) is clamped by the fixing ring (41) and the outer tube (3).

4. A novel double-walled steel pipe as defined in claim 3, wherein: the end face, close to the inner tube (2), of the fixing ring (41) is provided with a second sealing assembly (7), the second sealing assembly (7) comprises a second annular groove (71) and a second sealing ring (72), the second annular groove (71) is formed in the end face, close to the inner tube (2), of the fixing ring (41), the second sealing ring (72) is arranged in the second annular groove (71), and the second sealing ring (72) is clamped by the fixing ring (41) and the inner tube (2).

5. The novel double-layer steel pipe according to claim 4, characterized in that: the second annular groove (71) is positioned on one side of the connecting ring (42) close to the central axis of the connecting ring.

6. The novel double-layer steel pipe according to claim 1, characterized in that: the outer side wall of the inner tube (2) is provided with a guiding and positioning rod (8) along the length direction, the inner wall of the inner tube (2) is provided with a guiding and positioning groove (9) matched with the guiding and positioning rod (8), and the guiding and positioning rod (8) is located in the guiding and positioning groove (9) and is attached to the inner wall of the guiding and positioning groove (9).

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