CN209839369U - Composite pipe with stainless steel lining - Google Patents

Abstract

The utility model relates to the technical field of pipes, in particular to a composite pipe lined with stainless steel, which comprises an outer pipe and a stainless steel layer fixed on the inner layer of the outer pipe, wherein the outer pipe and the stainless steel layer are fixedly connected through a connecting layer, the connecting layer is fixedly bonded with the stainless steel layer, the outer pipe is fixedly clamped with the stainless steel layer, the stainless steel layer comprises a protruding connector, a sound insulation layer and a hot melting connecting layer, and the protruding connector is fixed on one side of the sound insulation layer close to the outer pipe; be equipped with the articulamentum between outer tube and stainless steel layer, the articulamentum comprises outstanding connector, puigging and hot melt articulamentum, because outstanding connector and puigging are the plastics material, easy machine-shaping, and not high to the processing requirement, carry out batch production easily, simultaneously greatly reduced technology degree of difficulty, and then reduction in production cost, in addition through puigging structural feature, its inside bubble that has can play certain syllable-dividing effect.

Description

Composite pipe with stainless steel lining

Technical Field

The utility model relates to the technical field of tubular product, specifically a compound pipe of inside lining stainless steel.

Background

The lining stainless steel composite steel pipe executes the urban construction industry standard CJ/T192-2004, is a thin-wall stainless steel pipe compounded on the inner wall of the steel pipe, greatly improves the corrosion resistance of the steel pipe in the processes of water transportation, hot water transportation, gas transportation, natural gas transportation and oil transportation, has smooth surface and small fluid resistance, retains the advantages of high mechanical strength of the steel pipe, capability of adopting welding, groove and thread connection and good sealing performance, overcomes the defects that a galvanized steel pipe is easy to corrode and a plastic pipe adopting hot melting connection is easy to leak and age, and is an ideal product for upgrading gas, water and oil transportation steel pipes.

Stainless steel pipe often is used for the pipeline that directly drinks water, and it still has stronger corrosion resisting ability simultaneously, but pure stainless steel pipe price is comparatively expensive, is not suitable for long-range large tracts of land use. In order to overcome the defects, a stainless steel lined composite steel pipe is available on the market, namely, stainless steel is compounded on the inner wall of a carbon steel pipe, so that the problem of high price is solved. However, the present compounding process of the lined stainless steel pipe is complex, and generally, the compounding process is a method of compounding a stainless steel plate on a carbon steel plate and then crimping the composite plate into a pipe, the method has low efficiency, and a gap is easily generated between the formed carbon steel pipe and the stainless steel pipe, once a conveyed substance leaks into the gap from the pipe end, the corrosion of the carbon steel pipe is caused, the leakage of the conveyed substance is caused, the service life of the composite pipe is shortened, and even the property safety and the personal safety are threatened, so the chinese patent discloses a lined stainless steel composite pipe with high compounding efficiency. (grant publication No. CN 208634551U), this patent technology can reduce finished product pipe damage rate, reduce unloading noise, safe and reliable, the advantage of easily realizing, but, stainless steel intensity is big, need process out the tenon shape, and the processing degree of difficulty is big, and to the required precision height, in case size cooperation problem appears, just can't realize closely laminating. Accordingly, one skilled in the art has provided a stainless steel lined composite pipe to solve the problems set forth in the background above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound pipe of inside lining stainless steel to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a compound pipe of inside lining stainless steel, includes the outer tube and fixes the stainless steel layer at its inlayer, the outer tube with through articulamentum fixed connection between the stainless steel layer, the articulamentum with the stainless steel layer bonds fixedly, just the outer tube with stainless steel layer block is fixed, the articulamentum includes outstanding connector, puigging and hot melt articulamentum, the puigging is close to one side of outer tube is fixed with outstanding connector, the inboard of outer tube seted up with outstanding connector complex annular card chamber, the puigging is close to one side on stainless steel layer is fixed with the hot melt articulamentum, the puigging with pass through between the stainless steel layer hot melt articulamentum fixed connection.

As a further aspect of the present invention: outstanding connector with the puigging is PPR plastics material, just outstanding connector with all contain the bubble in the puigging.

As a further aspect of the present invention: the hot-melt connecting layer adopts polyvinyl alcohol hot melt adhesive.

As a further aspect of the present invention: the card chamber is in along axial equidistance distribution the inner wall of outer tube, adjacent two the interval between the card chamber is twenty centimetres.

As a further aspect of the present invention: the outer wall of the outer pipe is provided with an anti-corrosion layer, the anti-corrosion layer comprises ceramic particles, nano graphene sheets and a resin layer, and the nano graphene sheets and the resin layer are mixed in the ceramic particles.

As a further aspect of the present invention: the thickness of the soundproof layer is larger than that of the stainless steel layer.

As a further aspect of the present invention: the depth of the card cavity is at least three times the thickness of the acoustic barrier.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses be equipped with the articulamentum between outer tube and stainless steel layer, the articulamentum comprises outstanding connector, puigging and hot melt articulamentum, because outstanding connector and puigging are the plastics material, easy processing design, and not high to the processing requirement, carry out batch production easily, the while greatly reduced technology degree of difficulty, and then reduction in production cost, in addition through puigging structural feature, its inside bubble that has can play certain syllable-dividing effect.

2. The utility model discloses adopt the hot melt adhesive to connect between puigging and the stainless steel layer, processing is simple reliable, and compares and laminate more in original structure, and the wholeness is higher.

3. The utility model discloses an outer wall is equipped with the anti-corrosion coating, and the anti-corrosion coating sneaks into ceramic particle and nanometer graphite alkene piece in the resin layer, when having corrosion resistance, strengthens its wear resistance.

Drawings

FIG. 1 is a schematic structural view of a stainless steel lined composite pipe;

FIG. 2 is a schematic cross-sectional view of a stainless steel-lined composite pipe;

FIG. 3 is a schematic structural view of a sound insulation layer and a hot melt bonding layer in a stainless steel-lined composite pipe;

fig. 4 is a schematic structural diagram of an anti-corrosion layer in a stainless steel-lined composite pipe.

In the figure: 1. an outer tube; 101. a card cavity; 11. an anti-corrosion layer; 111. ceramic particles; 112. nano graphene sheets; 113. a resin layer; 2. a stainless steel layer; 3. a connecting layer; 31. a protruding connector; 32. a sound insulating layer; 33. and (4) thermally melting the connecting layer.

Detailed Description

Please refer to fig. 1-4, in the embodiment of the present invention, a composite pipe lined with stainless steel, including outer tube 1 and fix stainless steel layer 2 in its inner layer, through connecting layer 3 fixed connection between outer tube 1 and the stainless steel layer 2, connecting layer 3 and stainless steel layer 2 bond fixedly, and outer tube 1 and stainless steel layer 2 block are fixed, connecting layer 3 includes outstanding connector 31, puigging 32 and hot melt connecting layer 33, one side that puigging 32 is close to outer tube 1 is fixed with outstanding connector 31, annular card chamber 101 with outstanding connector 31 complex is seted up to outer tube 1's inboard, one side that puigging 32 is close to stainless steel layer 2 is fixed with hot melt connecting layer 33, pass through hot melt connecting layer 33 fixed connection between puigging 32 and the stainless steel layer 2.

In fig. 1: including outer tube 1 and fix stainless steel layer 2 in its inlayer, through connecting layer 3 fixed connection between outer tube 1 and the stainless steel layer 2, be equipped with connecting layer 3 between outer tube 1 and stainless steel layer 2, connecting layer 3 is by outstanding connector 31, puigging 32 and hot melt articulamentum 33 are constituteed, because outstanding connector 31 and puigging 32 are the plastics material, easy processing design, and it is not high to process the requirement, carry out batch production easily, the while greatly reduced technology degree of difficulty, and then reduction in production cost.

In fig. 2, the outer pipe 1 and the stainless steel layer 2 fixed on the inner layer thereof are included, the outer pipe 1 can be an iron pipe or other material pipes meeting the use requirement due to a composite pipe, the outer pipe 1 and the stainless steel layer 2 are fixedly connected through the connecting layer 3, the connecting layer 3 is fixedly bonded with the stainless steel layer 2, the production difficulty and the production cost can be reduced through a bonding and fixing mode, the outer pipe 1 and the stainless steel layer 2 are fixedly clamped, the stainless steel layer 2 includes a protruding connector 31, a sound insulation layer 32 and a hot melt connecting layer 33, the protruding connector 31 is fixed on one side of the sound insulation layer 32 close to the outer pipe 1, an annular clamping cavity 101 matched with the protruding connector 31 is formed in the inner side of the outer pipe 1, the protruding connector 31 and the sound insulation layer 32 are made of plastic materials, the processing and shaping are easy, the processing requirement is not high, the mass production is easy, the process difficulty is greatly reduced, the production cost is further reduced, the outer pipe 1 is connected with the sound insulation layer 32 by being clamped in the clamping cavity 101 through the protruding connector 31, the clamping cavities 101 are distributed on the inner wall of the clamping cavity 1 along the axial direction, the inner wall of the adjacent two sound insulation cavities 101, the stainless steel layers are distributed at equal distance of twenty centimeters, the hot melt adhesive layer, the stainless steel layer can be well fixed, the stainless steel layer is well adhered, the stainless steel layer.

In fig. 3: outstanding connector 31 and puigging 32 are the PPR plastics material, it is high to have intensity, the processing property is excellent, creep resistance can be good under the higher temperature, and have the peculiar high transparency advantage of random copolymerization polypropylene, and because all contain the bubble in outstanding connector 31 and the puigging 32, can guarantee that outstanding connector 31 has elasticity, therefore, conveniently block outstanding connector 31 card in annular card chamber 101, the degree of depth in card chamber 101 is the triple of puigging 32 thickness at least, can increase the reliability after the block like this, the thickness of puigging 32 is greater than stainless steel layer 2's thickness, and puigging 32 can utilize middle bubble, play syllable-dividing effect.

In fig. 4: the outer wall of the outer tube 1 is provided with an anti-corrosion layer 11, the anti-corrosion layer 11 comprises ceramic particles 111, nano graphene sheets 112 and a resin layer 113, the nano graphene sheets 112 and the resin layer 113 are mixed in the ceramic particles 111, the hydrophilic OH functional group of the coupling agent can be chemically bonded to the surface (such as COOH and OH) of the functionalized nano graphene sheets 112, and the lipophilic functional group of the coupling agent can be chemically bonded to the corresponding carrier resin, the nano-graphene sheets 112 are chemically bonded to the carrier resin layer 113 through the surface modification layer, so that the nano-graphene sheets 112 can be uniformly dispersed in the carrier resin layer 113, the nano graphene sheets uniformly dispersed in the carrier resin can sufficiently exert the physical and chemical properties of the nano graphene sheets, thereby increasing the effectiveness of the corrosion resistant layer and further increasing the wear resistance through the infiltrated ceramic particles 111.

The working principle of the utility model is that a connecting layer 3 is arranged between an outer tube 1 and a stainless steel layer 2, the connecting layer 3 is composed of an outstanding connector 31, a sound insulation layer 32 and a hot melt connecting layer 33, because the outstanding connector 31 and the sound insulation layer 32 are made of plastic materials, easy processing and shaping, and the requirement on processing is not high, batch production is easily carried out, simultaneously, the process difficulty is greatly reduced, and further the production cost is reduced, the card realizes the connection of the outer tube 1 and the sound insulation layer 32 in a card cavity 101 through the outstanding connector 31, the distance between two adjacent card cavities 101 is twenty centimeters, because the distribution distance is small, can reach fine laminating effect, the integrity is increased, the hot melt connecting layer 33 adopts polyvinyl alcohol hot melt adhesive, the polyvinyl alcohol hot melt adhesive has quick adhesion, the strength is high, ageing resistance, no toxicity, good thermal stability, the characteristics of adhesive film toughness and the like, melt at 80 degrees ~ 150 degrees, can be adhered and fixed after cooling.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a compound pipe of inside lining stainless steel, includes outer tube (1) and fixes stainless steel layer (2) at its inlayer, its characterized in that, outer tube (1) with through articulamentum (3) fixed connection between stainless steel layer (2), articulamentum (3) with stainless steel layer (2) bond fixedly, just outer tube (1) with stainless steel layer (2) block is fixed, articulamentum (3) are including outstanding connector (31), puigging (32) and hot melt articulamentum (33), puigging (32) are close to one side of outer tube (1) is fixed with outstanding connector (31), the inboard of outer tube (1) seted up with outstanding connector (31) complex annular card chamber (101), puigging (32) are close to one side of stainless steel layer (2) is fixed with hot melt articulamentum (33), the sound insulation layer (32) and the stainless steel layer (2) are fixedly connected through the hot melting connecting layer (33).

2. The stainless steel lined composite pipe as claimed in claim 1, wherein the protruding connector (31) and the sound insulation layer (32) are both made of PPR plastic material, and the protruding connector (31) and the sound insulation layer (32) both contain air bubbles.

3. The stainless steel-lined composite pipe as claimed in claim 1, wherein the hot-melt bonding layer (33) is polyvinyl alcohol hot-melt adhesive.

4. The stainless steel-lined composite pipe according to claim 1, wherein the clamping cavities (101) are axially and equidistantly distributed on the inner wall of the outer pipe (1), and the distance between two adjacent clamping cavities (101) is twenty centimeters.

5. The stainless steel-lined composite pipe according to claim 1, wherein the outer wall of the outer pipe (1) is provided with an anti-corrosion layer (11), the anti-corrosion layer (11) comprises ceramic particles (111), nano graphene sheets (112) and a resin layer (113), and the nano graphene sheets (112) and the resin layer (113) are mixed in the ceramic particles (111).

6. A stainless steel lined composite pipe according to claim 1, wherein the acoustic insulation layer (32) has a thickness greater than the thickness of the stainless steel layer (2).

7. A stainless steel lined composite pipe according to claim 1, wherein the depth of said clamping cavity (101) is at least three times the thickness of said acoustic insulation layer (32).