CN116772037A - Corrosion-resistant pipeline and production process thereof - Google Patents

Abstract

The invention discloses an anti-corrosion pipeline and a production process thereof, relates to a pipeline, and aims to solve the problem that an insulation layer on the pipeline is inconvenient to detach, and the technical scheme is as follows: including the body and set up the ring flange at body both sides, the inside lining pipe that is provided with of body, the coating has corrosion-resistant coating on the interior perisporium of lining pipe, has evenly offered a plurality of installation slots along circumference on the inner wall of lining pipe in, and the inside detachably of installation slot installs the heat preservation strip, and production technology includes following step: smelting and casting, checking and accepting raw materials, cutting strip steel, pickling, cold rolling, welding pipe forming, cold drawing, assembling, coating, inspecting and warehousing. According to the anti-corrosion pipeline, a good heat preservation effect can be achieved through the laying combination of the heat preservation strips, when the heat preservation strips are required to be disassembled, the heat preservation strips are only required to be pulled out of the installation slots, stripping is not required, the operation is convenient and simple, and the construction operation is time-saving and labor-saving.

Description

Corrosion-resistant pipeline and production process thereof

Technical Field

The invention relates to a pipeline, in particular to an anti-corrosion pipeline and a production process thereof.

Background

The anti-corrosion pipeline is a pipeline adopting pipeline anti-corrosion measures. Pipeline preservation measures refer to measures to slow or prevent pipelines from being corroded and spoiled under the chemical, electrochemical action of internal and external media or by the metabolic activity of microorganisms. Corrosion resistant pipelines are widely used in water supply, drainage, heat supply, gas supply, long distance transportation of petroleum and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices.

At present, in order to ensure that thermodynamic equipment and pipelines run in an economic state with minimum heat dissipation loss in the use process of an anti-corrosion pipeline, a reasonable heat preservation layer is necessary to be selected, maintenance and repair work of the heat preservation layer are needed to be done, before the heat preservation layer is paved on the equipment and the pipeline, waste such as an old heat preservation layer, dust, rust and the like on the surface of the heat preservation equipment is needed to be removed, then an anti-corrosion agent is coated according to the design, and subsequent construction is carried out after drying, however, the existing heat preservation layer is usually adhered to the outer wall of the anti-corrosion pipeline through glue, stripping is needed to be carried out through a tool during disassembly, the operation is extremely complicated, and the construction is time-consuming and labor-consuming.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an anti-corrosion pipeline and a production process thereof, which are convenient for dismounting heat preservation strips and time-saving and labor-saving in construction operation.

The technical aim of the invention is realized by the following technical scheme: the utility model provides an anticorrosive pipeline, includes the body and sets up the ring flange at the body both sides, the inside lining pipe that is provided with of body, the coating has corrosion-resistant coating on the interior perisporium of lining pipe, a plurality of installation slots have evenly been seted up along circumference on the inner wall of lining pipe, the inside detachably of installation slot installs the heat preservation strip.

The invention is further provided with: the outside cover of heat preservation strip is equipped with the support section of thick bamboo, the support section of thick bamboo adopts urea-formaldehyde resin material to make.

The invention is further provided with: the clamping groove is vertically formed in the inner peripheral wall of the mounting slot, an annular groove communicated with the clamping groove is circumferentially formed in the inner peripheral wall of the mounting slot, and a clamping block used for sequentially clamping the clamping groove and the inside of the annular groove is arranged on the side wall of the supporting cylinder.

The invention is further provided with: the inside a plurality of support ribs that evenly are provided with along length direction of support section of thick bamboo, support the rib and run through the heat preservation strip and both ends are fixed on the support section of thick bamboo inner wall.

The invention is further provided with: the bottom of the heat preservation bar is provided with a groove, and the inner bottom wall of the installation slot is provided with a bolt for being inserted into the groove.

The invention is further provided with: one end of the heat preservation strip far away from the groove is provided with a holding handle.

The invention is further provided with: the pipe body and the flange plate are both made of stainless steel materials.

The production process of the anti-corrosion pipeline comprises the following steps:

1) Smelting and casting: preparing raw materials, circularly and continuously putting the raw materials into a smelting furnace, heating and melting the metal raw materials, putting silicon after the metal raw materials are converted into metal mixed solution, heating the metal mixed solution together until the metal mixed solution is completely melted to form a melt, casting the melt, and finally stretching the melt to prepare a steel coiled plate;

2) Checking and accepting raw materials: quality inspection is carried out on the steel coil plate manufactured in the step 1), defective products are distinguished, and the qualified steel coil plate is uncoiled through an uncoiler;

3) Cutting strip steel: placing the uncoiled steel coil plate into a slitting machine to be slit into strip steel, and determining the width of the strip steel according to the diameter of a standard component;

4) Acid washing: placing the strip steel cut in the step 3) into a pickling tank, and carrying out pickling treatment through pickling solution to remove iron oxide scales on the surface of the strip steel;

5) Cold rolling: placing the strip steel treated in the step 4) into a rolling mill, and performing cold rolling treatment through the rolling mill;

6) And (3) forming a welded pipe: feeding the strip steel subjected to the cold rolling in the step 5) into a forming machine for roller bending into a circle, and welding the rounded strip steel into a straight welded pipe on a welding machine;

7) Cold drawing treatment: feeding the straight welded pipe manufactured in the step 6) into a cold drawing machine for cold drawing to obtain a blank pipe;

8) And (3) assembling: the lining pipe is adhered and fixed in the blank pipe, and then the heat preservation strip with the supporting cylinder is installed in the installation slot to realize assembly;

9) Coating: coating corrosion-resistant paint on the inner peripheral wall of the lining pipe to prepare a finished product corrosion-resistant pipeline;

10 Checking and warehousing: checking the inner and outer surfaces of the finished anti-corrosion pipeline manufactured in the step 9), ensuring that the inner and outer surfaces of the anti-corrosion pipeline are free from scratches or pits, and then warehousing for storage.

In summary, the invention has the following beneficial effects:

1. according to the invention, a good heat preservation effect can be achieved through the laying combination of a plurality of heat preservation strips, and when the heat preservation strips are required to be disassembled, the heat preservation strips are only required to be pulled out from the inside of the installation slot, stripping is not required, the operation is convenient and simple, and the construction operation is time-saving and labor-saving;

2. the production process has simple and orderly steps, high automation degree and high production efficiency, and meets the requirement of mass production of pipelines.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a semi-sectional view of the present invention;

FIG. 3 is a semi-sectional view of the present invention with the insulation strips removed;

FIG. 4 is an enlarged schematic view of the structure shown at A in FIG. 3;

FIG. 5 is a schematic view of the structure of the heat insulation strip according to the present invention;

fig. 6 is an enlarged schematic view of the structure at B in fig. 5.

Reference numerals: 1. a tube body; 2. a flange plate; 3. an inner liner tube; 4. installing a slot; 5. a heat preservation bar; 6. a support cylinder; 7. a clamping groove; 8. an annular groove; 9. a clamping block; 10. support ribs; 11. a groove; 12. a plug pin; 13. the handle is held.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Please see fig. 1, fig. 2, an anticorrosive pipeline, including body 1 and set up ring flange 2 at body 1 both sides, body 1 and ring flange 2 all adopt stainless steel material to make, intensity and hardness are higher, and be difficult for corrosion, thereby guaranteed the structural strength of anticorrosive pipeline, make anticorrosive pipeline have better durability, be provided with interior bushing pipe 3 in body 1 inside, and be coated with corrosion-resistant coating on interior perisporium of lining pipe 3, corrosion-resistant coating is polytetrafluoroethylene coating, thereby can support the inside of body 1, and can play better anticorrosive effect, evenly offered a plurality of mounting slots 4 along circumference on the inner wall of lining pipe 3, and install heat preservation strip 5 in mounting slot 4 inside detachably, when heat preservation strip 5 installs, through the laying the combination of many heat preservation strips 5, and only need dismantle heat preservation strip 5 from mounting slot 4 inside can, it is comparatively laborsaving to dismantle heat preservation strip 5, easy operation is comparatively convenient and easy to operate.

Referring to fig. 1-6, a supporting cylinder 6 is sleeved outside a heat preservation bar 5, the supporting cylinder 6 is made of urea resin material, has tough texture and lighter weight, so that the heat preservation bar 5 can be supported and shaped, the heat preservation bar 5 is prevented from being deformed by pressing due to external force, the durability of the heat preservation bar 5 is improved, a plurality of supporting ribs 10 are uniformly arranged inside the supporting cylinder 6 along the length direction, the supporting ribs 10 penetrate through the heat preservation bar 5, two ends of the supporting ribs are fixed on the inner wall of the supporting cylinder 6, so that the structure of the supporting cylinder 6 can be reinforced, the whole pipeline structure can be reinforced, the pressure bearing capacity of the pipeline is enhanced, wherein the heat preservation bar is made of polystyrene foam material, is injected into the inside of the supporting cylinder 6 in a melt extrusion mode and combined with the supporting ribs 10, the state that the supporting ribs penetrate through the heat preservation bar is shown, the clamping groove 7 is vertically arranged on the inner peripheral wall of the installation slot 4, the annular groove 8 communicated with the clamping groove 7 is circumferentially arranged on the inner peripheral wall of the installation slot 4, the clamping blocks 9 used for being sequentially clamped into the clamping groove 7 and the annular groove 8 are arranged on the side wall of the supporting cylinder 6, when the heat preservation bar 5 is installed in the installation slot 4, the clamping blocks 9 can be clamped into the clamping groove 7 and slide to the communication position of the clamping groove 7 and the annular groove 8, then the heat preservation bar 5 is rotated, the clamping blocks 9 are clamped into the annular groove 8, the heat preservation bar 5 can be firmly installed through the limit of the annular groove 8 to the clamping blocks 9, when the heat preservation bar 5 is disassembled, the clamping blocks 9 are only required to be rotated to the communication position of the clamping groove 7 and the annular groove 8, then the heat preservation bar 5 is pulled out, the disassembly operation is convenient and simple, the bottom of the heat preservation bar 5 is provided with the groove 11, be provided with on the interior diapire of installation slot 4 and be used for inserting the inside bolt 12 of recess 11, then when inserting installation slot 4 inside with heat preservation strip 5, can insert the inside of recess 11 with bolt 12 earlier and advance the location to make the installation of heat preservation strip 5 become more convenient simple, and the one end that keeps away from recess 11 at heat preservation strip 5 is provided with grips handle 13, then when needs carry out the pulling heat preservation strip 5, can hold and grip handle 13 and exert a force, then grip handle 13 can provide the application of force point for the operation of pulling heat preservation strip 5, thereby make the operation become more light laborsaving.

The production process of the anti-corrosion pipeline comprises the following steps:

1) Smelting and casting: preparing raw materials, circularly and continuously putting the raw materials into a smelting furnace, heating and melting the metal raw materials, putting silicon after the metal raw materials are converted into metal mixed solution, heating the metal mixed solution together until the metal mixed solution is completely melted to form a melt, casting the melt, and finally stretching the melt to prepare a steel coiled plate;

2) Checking and accepting raw materials: quality inspection is carried out on the steel coil plate manufactured in the step 1), defective products are distinguished, and the qualified steel coil plate is uncoiled through an uncoiler;

3) Cutting strip steel: placing the uncoiled steel coil plate into a slitting machine to be slit into strip steel, and determining the width of the strip steel according to the diameter of a standard component;

4) Acid washing: placing the strip steel cut in the step 3) into a pickling tank, and carrying out pickling treatment through pickling solution to remove iron oxide scales on the surface of the strip steel;

5) Cold rolling: placing the strip steel treated in the step 4) into a rolling mill, and performing cold rolling treatment through the rolling mill;

6) And (3) forming a welded pipe: feeding the strip steel subjected to the cold rolling in the step 5) into a forming machine for roller bending into a circle, and welding the rounded strip steel into a straight welded pipe on a welding machine;

7) Cold drawing treatment: feeding the straight welded pipe manufactured in the step 6) into a cold drawing machine for cold drawing to obtain a blank pipe;

8) And (3) assembling: the lining pipe is adhered and fixed in the blank pipe, and then the heat preservation strip with the supporting cylinder is installed in the installation slot to realize assembly;

9) Coating: coating corrosion-resistant paint on the inner peripheral wall of the lining pipe to prepare a finished product corrosion-resistant pipeline;

10 Checking and warehousing: checking the inner and outer surfaces of the finished anti-corrosion pipeline manufactured in the step 9), ensuring that the inner and outer surfaces of the anti-corrosion pipeline are free from scratches or pits, and then warehousing for storage.

The invention adopts the production process flows of smelting and casting, raw material acceptance, strip steel cutting, acid washing treatment, cold rolling treatment, welded pipe forming, cold drawing treatment, assembly treatment, coating treatment, inspection and warehousing, has simple and ordered steps, high automation degree and high production efficiency, and meets the requirement of mass production of pipelines.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (8)

1. The utility model provides an anticorrosive pipeline, includes body (1) and sets up ring flange (2) in body (1) both sides, its characterized in that: liner tube (3) are arranged inside body (1), the interior perisporium of inside lining tube (3) is last to be coated with corrosion-resistant coating, a plurality of installation slot (4) have evenly been seted up along circumference on the inner wall of inside lining tube (3), inside detachably of installation slot (4) installs heat preservation strip (5).

2. An anti-corrosion pipe according to claim 1, wherein: the outside cover of heat preservation strip (5) is equipped with support section of thick bamboo (6), support section of thick bamboo (6) adopt urea-formaldehyde resin material to make.

3. An anti-corrosion pipe according to claim 2, wherein: clamping grooves (7) are vertically formed in the inner peripheral wall of the mounting slot (4), annular grooves (8) communicated with the clamping grooves (7) are circumferentially formed in the inner peripheral wall of the mounting slot (4), and clamping blocks (9) used for being sequentially clamped into the clamping grooves (7) and the annular grooves (8) are arranged on the side wall of the supporting cylinder (6).

4. An anti-corrosion pipe according to claim 2, wherein: the inside a plurality of support ribs (10) that evenly are provided with along length direction of support section of thick bamboo (6), support rib (10) run through heat preservation strip (5) and both ends are fixed on the inner wall of support section of thick bamboo (6).

5. An anti-corrosion pipe according to claim 1, wherein: the bottom of the heat preservation bar (5) is provided with a groove (11), and the inner bottom wall of the installation slot (4) is provided with a bolt (12) for being inserted into the groove (11).

6. An anti-corrosion pipe according to claim 5, wherein: one end of the heat preservation strip (5) far away from the groove (11) is provided with a holding handle (13).

7. An anti-corrosion pipe according to claim 1, wherein: the pipe body (1) and the flange plate (2) are made of stainless steel materials.

8. A process for producing an anti-corrosive pipe according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:

1) Smelting and casting: preparing raw materials, circularly and continuously putting the raw materials into a smelting furnace, heating and melting the metal raw materials, putting silicon after the metal raw materials are converted into metal mixed solution, heating the metal mixed solution together until the metal mixed solution is completely melted to form a melt, casting the melt, and finally stretching the melt to prepare a steel coiled plate;

2) Checking and accepting raw materials: quality inspection is carried out on the steel coil plate manufactured in the step 1), defective products are distinguished, and the qualified steel coil plate is uncoiled through an uncoiler;

3) Cutting strip steel: placing the uncoiled steel coil plate into a slitting machine to be slit into strip steel, and determining the width of the strip steel according to the diameter of a standard component;

4) Acid washing: placing the strip steel cut in the step 3) into a pickling tank, and carrying out pickling treatment through pickling solution to remove iron oxide scales on the surface of the strip steel;

5) Cold rolling: placing the strip steel treated in the step 4) into a rolling mill, and performing cold rolling treatment through the rolling mill;

6) And (3) forming a welded pipe: feeding the strip steel subjected to the cold rolling in the step 5) into a forming machine for roller bending into a circle, and welding the rounded strip steel into a straight welded pipe on a welding machine;

7) Cold drawing treatment: feeding the straight welded pipe manufactured in the step 6) into a cold drawing machine for cold drawing to obtain a blank pipe;

8) And (3) assembling: the lining pipe is adhered and fixed in the blank pipe, and then the heat preservation strip with the supporting cylinder is installed in the installation slot to realize assembly;

9) Coating: coating corrosion-resistant paint on the inner peripheral wall of the lining pipe to prepare a finished product corrosion-resistant pipeline;

10 Checking and warehousing: checking the inner and outer surfaces of the finished anti-corrosion pipeline manufactured in the step 9), ensuring that the inner and outer surfaces of the anti-corrosion pipeline are free from scratches or pits, and then warehousing for storage.