Prestressed steel cylinder concrete pipe and forming equipment thereof

Abstract

The utility model relates to the technical field of pipelines, in particular to a prestressed concrete cylinder pipe and forming equipment thereof, the prestressed concrete cylinder pipe comprises a pipe body, and prestressed steel wires in the pipe body are anti-corrosion steel wires; the anti-corrosion steel wire is configured to be provided with a first anti-corrosion layer on the surface of the steel wire in a straightened and pre-stressed state; the anti-corrosion steel wire is wound around the pipe body. The steel wire is subjected to anti-corrosion setting in the state of obtaining prestress after being straightened, that is, the steel wire is subjected to anti-corrosion setting after being fully deformed, the prestressed steel wire can be set to be the anti-corrosion steel wire, and the first anti-corrosion layer is arranged on the surface of the steel wire, so that the first anti-corrosion layer obtains due strength, the process is simplified, the steel wire is not prone to corrosion, and the service life of the steel wire is prolonged. The prestressed steel cylinder concrete pipe reduces the probability of pipe explosion accidents, prolongs the service life, and is simple in structure, convenient to use and good in effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline technical field, especially a prestressed steel cylinder concrete pipe and its forming equipment. BACKGROUND

[0002] Prestressed Concrete Cylinder Pipe (PCCP) refers to the water pipe made of high-strength concrete pipe core with steel cylinder, and then the dense cement mortar protective layer is sprayed on it. It is a composite pipe material composed of thin steel plate, high-strength steel wire and concrete, which fully and comprehensively plays the tensile, easy sealing and corrosion-resistant properties of steel and concrete.

[0003] PCCP is a widely used pipeline, known for its large diameter, high pressure and low cost. The existing buried PCCP includes an inner concrete layer, a thin steel cylinder, an outer concrete layer, a wrapped prestressed steel wire and a mortar protective layer from inside to outside. The existing lining PCCP includes a concrete layer, a thin steel cylinder, a wrapped prestressed steel wire and a mortar protective layer from inside to outside. The mortar protective layer is used to protect the prestressed steel wire from corrosion, but the corrosion protection effect of the mortar protective layer is general.

[0004] In some existing steel wire corrosion prevention technologies, if the steel wire is subjected to corrosion prevention treatment before prestressed drawing, the corrosion layer will be damaged with high probability: because the steel wire is subjected to corrosion treatment (coating or plating) under the condition of being straightened, and then it is coiled after treatment; during prestressed drawing, it is straightened again and its diameter is reduced (to obtain prestress), and in this deformation, as well as the friction of the corrosion layer by the prestressed equipment, the corrosion layer will be affected, the adhesion will be reduced, and even damage (falling off) may occur, thereby affecting the corrosion prevention effect.

[0005] According to the above, the existing technology frequently causes pipe explosion accidents due to corrosion of the prestressed steel wire, and the PCCP pipe product needs to be further iterated and upgraded to avoid being eliminated by the industry. INVENTION CONTENTS

[0006] The utility model aims at the problem that the existing prestressed steel wire in the existing PCCP is subjected to corrosion prevention treatment first, and then subjected to prestressed tension, the diameter of the steel wire is reduced during obtaining prestress, and the corrosion layer is affected by the friction of the prestressed equipment, the adhesion is reduced, and even damage (falling off) may occur, so that the prestressed steel wire is easily corroded, and pipe explosion accidents frequently occur. The utility model provides a prestressed steel cylinder concrete pipe and its forming equipment.

[0007] To achieve the above object, the technical scheme adopted by the utility model is:

[0008] Firstly, the utility model provides a kind of prestressed concrete cylinder pipe, including pipe body, the prestressed steel wire in the pipe body adopts anticorrosive steel wire;The anticorrosive steel wire is configured as being provided with first anticorrosive layer on the surface of steel wire in straightening and obtaining prestressed state;The anticorrosive steel wire is wound on the pipe body.

[0009] The prestressed concrete cylinder pipe of the utility model is provided with first anticorrosive layer on the surface of anticorrosive steel wire, so that the anticorrosive steel wire is provided with first anticorrosive layer, the first anticorrosive layer is provided with the strength, the process is simplified, the steel wire is not easy to be corroded, the probability of pipe burst accident is reduced, and the service life is improved.

[0010] As the preferred technical scheme of the utility model, the surface of the pipe body is coated with second anticorrosive layer after the anticorrosive steel wire is wound on the pipe body, or the surface of the pipe body is tightly wrapped with heat shrink sleeve.

[0011] The second anticorrosive layer or heat shrink sleeve is arranged on the surface of the pipe body after the steel wire is wound, so that the anticorrosive performance of the whole surface of the pipe body is further improved, the first anticorrosive layer is protected by the second anticorrosive layer or heat shrink sleeve, and the performance of the anticorrosive steel wire and the service life of the prestressed concrete cylinder pipe are improved.

[0012] As the preferred technical scheme of the utility model, the first anticorrosive layer is an anticorrosive coating layer.

[0013] As the further preferred technical scheme of the utility model, the anticorrosive coating layer is fast-drying rust-resistant primer and anticorrosive finish, for example, paint that can be dried through in about 10 seconds or less than 10 seconds after baking.

[0014] As the preferred technical scheme of the utility model, the surface of the pipe body coated with the second anticorrosive layer is provided with a mortar protective layer.

[0015] As the preferred technical scheme of the utility model, the pipe body includes inner concrete layer, thin steel cylinder, outer concrete layer and prestressed steel wire arranged in sequence from inside to outside, i.e. the pipe body is a buried PCCP pipe body.

[0016] As the preferred technical scheme of the utility model, the pipe body includes concrete layer, thin steel cylinder and prestressed steel wire arranged in sequence from inside to outside, i.e. the pipe body is a lining PCCP pipe body.

[0017] In a second aspect, the utility model also provides a kind of forming equipment of prestressed steel cylinder concrete pipe as any one of above, including jig, shaper, anticorrosive layer setting machine;The jig is used to set pipe blank, the pipe blank includes concrete layer and thin steel cylinder, the jig can drive the pipe blank rotation;The shaper is used to modify the steel wire wound on reel into straight line type;The anticorrosive layer setting machine is set between the jig and the shaper, the straight line type steel wire after modification of the shaper passes through the anticorrosive layer setting machine, then is wound to the pipe blank surface, the anticorrosive layer setting machine is used to set the first anticorrosive layer on straight line type steel wire to form the anticorrosive steel wire, and the rotation force of the jig drags the anticorrosive steel wire to move.

[0018] Wherein, the rotation linear velocity of the jig is greater than the feed linear velocity of the steel wire into the shaper, and the steel wire is prestressed and straightened.

[0019] The forming equipment of prestressed steel cylinder concrete pipe is used, the steel wire is modified into straight line type by shaper, the steel wire is prestressed and straightened by the rotation of the jig, the first anticorrosive layer is set on the steel wire prestressed and straightened by the anticorrosive layer setting machine, that is, the anticorrosive layer is set after the steel wire is fully deformed, so that the anticorrosive layer obtains the strength, the process is simplified, the steel wire is not easy to be corroded, the probability of pipe explosion accident is reduced, and the performance of the anticorrosive steel wire and the service life of the prestressed steel cylinder concrete pipe are improved.

[0020] As a preferred technical scheme of the utility model, the anticorrosive layer setting machine includes a spray tank and a coating curing oven, and the shaper, the spray tank, the coating curing oven and the jig are sequentially arranged;The spray tank is used for spraying anticorrosive paint on the straight line type steel wire;The coating curing oven is used for baking the straight line type steel wire after spraying anticorrosive paint, so as to fix the first anticorrosive layer on the surface of the straight line type steel wire.

[0021] As a further preferred technical scheme of the utility model, the spray tank is provided with a first nozzle and a second nozzle;The first nozzle is used for spraying primer;The second nozzle is used for spraying topcoat.

[0022] By adopting the structure, the primer enables the anticorrosive paint to better adhere to the surface of the steel wire, the topcoat is combined with the primer, and the topcoat mainly plays a corrosion prevention role.

[0023] As a further preferred technical scheme of the utility model, the coating curing oven includes a heating disc and a hair dryer;The heating disc is used for heating the surrounding air;The hair dryer is used for blowing the heated air to the straight line type steel wire entering the coating curing oven.

[0024] As a further preferred technical scheme of the utility model, the heating disc adopts resistance wire, ceramic heating disc or gas heating air.

[0025] As a preferred technical scheme of the utility model, the shaping machine comprises a plurality of pressing wheel groups, the pressing wheel groups are symmetrically arranged, and the symmetrically arranged pressing wheel groups are pressed against the steel wire.

[0026] By the symmetrically arranged pressing wheel groups acting on the steel wire simultaneously, the steel wire wound on the reel is modified into a straight line.

[0027] As a further preferred technical scheme of the utility model, each pressing wheel group comprises a plurality of pressing wheels, the wheel surface of each pressing wheel is provided with a circular arc groove, and the pre-stressed steel wire abuts against the circular arc groove.

[0028] By the pressing wheels provided with the circular arc grooves, the force of the pressing wheels can be better transmitted to the pre-stressed steel wire through the circular arc grooves to modify the pre-stressed steel wire into a straight line, and the circular arc groove functions as a stopper to prevent the pressing wheels from falling off relative to the pre-stressed steel wire.

[0029] As a further preferred technical scheme of the utility model, the shaping machine further comprises a driving component, each pressing wheel group is connected with one driving component, and the driving component drives the corresponding pressing wheel group to move close to or away from the pre-stressed steel wire.

[0030] As a further preferred technical scheme of the utility model, the driving component adopts an oil cylinder, an air cylinder or an electric cylinder.

[0031] In summary, due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0032] 1. The pre-stressed steel cylinder concrete pipe has the advantages that the steel wire is provided with a first anticorrosive layer on the surface after being deformed to obtain a pre-stressed state, the pre-stressed steel wire is set as an anticorrosive steel wire, the first anticorrosive layer has the required strength, the process is simplified, the steel wire is not easy to be corroded, the probability of pipe explosion is reduced, and the service life is prolonged.

[0033] 2, The forming equipment of the prestressed steel cylinder concrete pipe, the steel wire is modified into a linear type through the shaper, the steel wire is prestressed and straightened through the tire frame rotation, the first anticorrosive layer is arranged on the prestressed and straightened steel wire through the anticorrosive layer setting machine, that is, anticorrosive layer setting is carried out after the steel wire is fully deformed, so that the anticorrosive layer obtains the due strength, the process is simplified, the steel wire is not easy to be corroded, the pipe burst accident occurrence probability is reduced, and the performance of the anticorrosive steel wire and the service life of the prestressed steel cylinder concrete pipe are improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the cross section schematic view of the prestressed steel cylinder concrete pipe in example 1;

[0035] Figure 2 It is the cross section schematic view of the prestressed steel cylinder concrete pipe in example 1; Figure 1 It is the enlarged schematic view of A part in the middle;

[0036] Figure 3 It is the cross section schematic view of the prestressed steel cylinder concrete pipe in example 2;

[0037] Figure 4 It is the cross section schematic view of the prestressed steel cylinder concrete pipe in example 2; Figure 2 It is the enlarged schematic view of B part in the middle;

[0038] Figure 5 It is the schematic view of the forming equipment of the prestressed steel cylinder concrete pipe;

[0039] Figure 6 It is the schematic view of the forming equipment of the prestressed steel cylinder concrete pipe; Figure 5 It is the enlarged schematic view of C part in the middle.

[0040] Markings in the drawing:

[0041] 01 - pipe blank;

[0042] 1 - pipe body, 11 - inner concrete layer, 12 - thin steel cylinder, 13 - outer concrete layer, 14 - prestressed steel wire, 15 - second anticorrosive layer, 16 - mortar protective layer, 17 - heat shrink sleeve;

[0043] 2 - tire frame;

[0044] 3 - shaper, 31 - pressure roller group, 32 - driving part;

[0045] 4 - spray box, 41 - first spray nozzle, 42 - second spray nozzle;

[0046] 5 - coating curing furnace. DETAILED DESCRIPTION

[0047] The present application will be further described in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the present application is limited to the following examples only, and any technology realized based on the content of the present application belongs to the scope of the present application.

[0048] In the description of specific embodiments of the present application, the terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer" and the like are expressed based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product / device / apparatus of the present application is usually used. These terms of orientation or positional relationship are only for the convenience of describing the present application or simplifying the description in specific embodiments, facilitating the quick understanding of the scheme by the skilled person, and should not be construed as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore should not be construed as a limitation on the present application.

[0049] In addition, the terms "horizontal", "vertical", "suspended", "parallel" and the like do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to mean that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "suspended", "parallel" and the like, and can have an error / deviation of ±10% with respect to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present application.

[0050] In addition, the terms "first", "second", "third" and the like in the description of the present application are only used to distinguish the same or similar components, and should not be construed as emphasizing or implying the relative importance of the specific components.

[0051] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, and even more than 9.

[0052] In addition, in the description of the technical scheme of the present application, unless otherwise specified / limited / limited, the terms "arrangement", "installation", "connection", "connection", "provided with", "laid", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, such as welding, riveting, bolting, screwing and other commonly used connection means in the art. The connection can be mechanical connection, electrical connection or communication connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication between two elements.

[0053] In the related art, the corrosion protection effect of the mortar protective layer is general. Meanwhile, in some existing steel wire corrosion protection technologies, if the steel wire is subjected to corrosion protection treatment and then subjected to prestress drawing, the corrosion layer is likely to be damaged: because the steel wire is subjected to corrosion treatment (coating or plating) in a straightened state, and is coiled after the treatment; in the prestress drawing, the steel wire is straightened and its diameter is reduced (to obtain prestress), and in this deformation and the friction of the corrosion layer with the prestress equipment, the corrosion layer is affected, the adhesion is reduced, and even damage (peeling) may occur, thereby affecting the corrosion protection effect, and the prestressed steel wire is easily corroded, leading to frequent pipe explosion accidents. Therefore, the technical solution of the present application is generated, which is described below in combination with Figures 1 to 6 .

[0054] Embodiment 1

[0055] As Figures 1 to 2 shown, the prestressed steel cylinder concrete pipe comprises a pipe body 1, the pipe body 1 comprises an inner concrete layer 11, a thin steel cylinder 12, an outer concrete layer 13 and a prestressed steel wire 14 arranged in sequence from inside to outside, that is, a buried PCCP pipe body; the prestressed steel wire 14 is made of corrosion-resistant steel wire; the corrosion-resistant steel wire is configured to be provided with a first corrosion-resistant layer on the surface of the steel wire in a straightened and prestressed state, and the corrosion-resistant steel wire is wound on the pipe body 1; after the corrosion-resistant steel wire is wound on the pipe body 1, the surface of the pipe body 1 is coated with a second corrosion-resistant layer 15; and the surface of the second corrosion-resistant layer 15 is provided with a mortar protective layer 16.

[0056] In a specific embodiment, the first corrosion-resistant layer is made of a corrosion-resistant paint layer. The corrosion-resistant paint layer is made of a fast-drying rust-resistant primer and a corrosion-resistant topcoat, for example, a paint that can dry through in about 10 seconds or less than 10 seconds after baking.

[0057] The prestressed steel cylinder concrete pipe described in the embodiment is provided with a first corrosion-resistant layer on the surface of the steel wire in a straightened and prestressed state, that is, the steel wire is provided with a first corrosion-resistant layer after being fully deformed, the prestressed steel wire 14 is set as a corrosion-resistant steel wire, the steel wire surface has a first corrosion-resistant layer, the first corrosion-resistant layer has the required strength, the process is simplified, the steel wire is not easily corroded, the probability of pipe explosion accidents is reduced, and the second corrosion-resistant layer 15 is provided on the surface of the pipe body 1 after the steel wire is wound, the overall corrosion resistance of the surface of the pipe body 1 is further improved, the first corrosion-resistant layer is protected by the second corrosion-resistant layer 15, the service life is improved, the second corrosion-resistant layer 15 is protected by the mortar protective layer 16, and the service life is further improved; the prestressed steel cylinder concrete pipe has a simple structure, is convenient to use, and has good effects.

[0058] Embodiment 2

[0059] Not shown, the prestressed concrete cylinder pipe of the utility model, different from embodiment 1, in the embodiment, the pipe body 1 is the inner lining type PCCP pipe body, the pipe body 1 includes concrete layer, thin steel cylinder 12, the prestressed steel wire 14 arranged successively from inside to outside.

[0060] Embodiment 3

[0061] As Figures 3 to 4 Shown, the prestressed concrete cylinder pipe of the utility model, different from embodiment 1, in the embodiment, the anticorrosion steel wire is wound on the pipe body 1, the surface of the pipe body 1 is wrapped tightly using heat shrink sleeve 17, that is, the surface of the pipe body 1 in the embodiment does not have the second anticorrosion layer 15 and the mortar protective layer 16.

[0062] The prestressed concrete cylinder pipe of the embodiment sets the prestressed steel wire 14 as anticorrosion steel wire, the surface of the steel wire has the first anticorrosion layer, so that the steel wire is not easy to be corroded, reduces the probability of pipe explosion accident, in addition, the surface of the pipe body 1 after steel wire winding is wrapped tightly using the heat shrink sleeve 17, further improves the anticorrosion performance of the surface of the pipe body 1 as a whole, the service life is improved by the heat shrink sleeve 17 protecting the first anticorrosion layer, the prestressed concrete cylinder pipe structure is simple, convenient to use, and good effect is obtained.

[0063] Embodiment 4

[0064] Not shown, the prestressed concrete cylinder pipe of the utility model, different from embodiment 3, in the embodiment, the pipe body 1 is the inner lining type PCCP pipe body, the pipe body 1 includes concrete layer, thin steel cylinder 12, the prestressed steel wire 14 arranged successively from inside to outside.

[0065] Embodiment 5

[0066] As Figures 5 to 6 Shown, the forming equipment of the prestressed concrete cylinder pipe of the utility model, different from embodiment 1 to embodiment 4, includes jig 2, shaper 3 and anticorrosion layer setting machine.

[0067] The jig 2 is used to set pipe blank 01, the pipe blank 01 includes inner concrete layer 11, thin steel cylinder 12, outer concrete layer 13 (buried type PCCP pipe blank) arranged successively from inside to outside, or the pipe blank 01 includes concrete layer, thin steel cylinder 12 (inner lining type PCCP pipe blank) arranged successively from inside to outside, and the jig 2 can drive the pipe blank 01 to rotate.

[0068] The shaper 3 is used to trim the steel wire wound from the steel wire reel into a straight line type.

[0069] The anticorrosion layer setting machine is arranged between the jig 2 and the shaping machine 3. The straight steel wire shaped by the shaping machine 3 passes through the anticorrosion layer setting machine and is wound on the surface of the pipe blank 01. The anticorrosion layer setting machine is used to set the first anticorrosion layer on the straight steel wire to form the anticorrosion steel wire. The rotation force of the jig 2 drives the anticorrosion steel wire to move.

[0070] In the embodiment, the rotation linear velocity of the jig 2 is greater than the feeding linear velocity of the steel wire into the shaping machine 3, so that the steel wire is pre-stressed and straightened.

[0071] In the embodiment, the anticorrosion layer setting machine comprises a spraying box 4 and a coating curing oven 5. The shaping machine 3, the spraying box 4, the coating curing oven 5 and the jig 2 are arranged in sequence. The spraying box 4 is used to spray anticorrosion paint on the straight steel wire. The coating curing oven 5 is used to bake the straight steel wire after the anticorrosion paint is sprayed, so that the first anticorrosion layer is formed on the surface of the straight steel wire.

[0072] In the embodiment, the spraying box 4 is provided with a first nozzle 41 and a second nozzle 42. The first nozzle 41 is used to spray primer. The second nozzle 42 is used to spray topcoat. In this structure, the primer enables the anticorrosion paint to better adhere to the surface of the steel wire. The topcoat is combined with the primer. The topcoat mainly plays a role of anticorrosion.

[0073] In the embodiment, the coating curing oven 5 comprises a heating disc and a blower. The heating disc is used to heat the surrounding air. The blower is used to blow the heated air to the straight steel wire entering the coating curing oven 5. The heating disc is used to heat the air by resistance wire, ceramic heating disc or gas.

[0074] In one specific embodiment, the shaping machine 3 comprises driving components 32 and a plurality of pressing wheel groups 31, the pressing wheel groups 31 are symmetrically arranged, the pre-stressed steel wires 14 are pressed between the symmetrically arranged pressing wheel groups 31, each of the pressing wheel groups 31 is connected with one of the driving components 32, the driving components 32 are oil cylinders, air cylinders or electric cylinders, the driving components 32 drive the corresponding pressing wheel groups 31 to approach or move away from the pre-stressed steel wires 14, each of the pressing wheel groups 31 comprises a plurality of pressing wheels, the wheel surface of each of the pressing wheels is provided with a circular arc groove, and the pre-stressed steel wires 14 abut in the circular arc grooves. By using the above structure, the symmetrically arranged pressing wheel groups 31 simultaneously act on the pre-stressed steel wires 14, the steel wires wound on the reel are modified into straight lines; by using the pressing wheels provided with the circular arc grooves, the force of the pressing wheels can be better transmitted to the pre-stressed steel wires 14 to modify the pre-stressed steel wires 14 into straight lines, and the circular arc grooves act as limiters to prevent the pressing wheels from falling off relative to the pre-stressed steel wires 14.

[0075] The forming equipment for the pre-stressed steel cylinder concrete pipe disclosed in the embodiment modifies the steel wires into straight lines by the shaping machine 3, rotates the jig 2 to straighten the pre-stressed steel wires, and sets the first anticorrosive layer on the pre-stressed straightened steel wires by the anticorrosive layer setting machine, so that the anticorrosive layer has the required strength, the process is simplified, the steel wires are not easy to be corroded, the probability of pipe explosion accidents is reduced, and the performance of the anticorrosive steel wires and the service life of the pre-stressed steel cylinder concrete pipe are improved.

[0076] Embodiment 6

[0077] The forming equipment for the pre-stressed steel cylinder concrete pipe disclosed in the embodiment differs from that in Embodiment 5 in that the coating curing furnace 5 is heated by using infrared heating technology to fix the anticorrosive coating to form the first anticorrosive layer.

[0078] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A prestressed steel cylinder concrete pipe, comprising a pipe body (1), characterized in that: The prestressed steel wire (14) in the pipe body (1) is made of corrosion-resistant steel wire; The anti-corrosion steel wire is configured to provide a first anti-corrosion layer on the surface of the steel wire when the steel wire is straightened and in a prestressed state; The anti-corrosion steel wire is wound around the pipe body (1).

2. The prestressed steel cylinder concrete pipe according to claim 1, characterized in that: After the anti-corrosion steel wire is wound around the pipe body (1), the surface of the pipe body (1) is coated with a second anti-corrosion layer (15), or the surface of the pipe body (1) is tightly wrapped with a heat shrink sleeve (17).

3. The prestressed steel cylinder concrete pipe according to claim 1, characterized in that: The first anti-corrosion layer is an anti-corrosion coating layer.

4. The prestressed steel cylinder concrete pipe according to claim 3, characterized in that: The anti-corrosion coating layer adopts quick-drying rust-resistant primer and anti-corrosion topcoat.

5. The prestressed steel cylinder concrete pipe according to any one of claims 1 to 4, characterized in that: The pipe body (1) comprises an inner concrete layer (11), a thin steel cylinder (12), an outer concrete layer (13), and the prestressed steel wire (14), which are sequentially arranged from the inside to the outside.

6. The prestressed steel cylinder concrete pipe according to any one of claims 1 to 4, characterized in that: The pipe body (1) comprises a concrete layer, a thin steel cylinder (12), and the prestressed steel wire (14) which are sequentially arranged from the inside to the outside.

7. A forming device for a prestressed concrete cylinder pipe according to any one of claims 1 to 6, characterized in that: include: A tire frame (2) is used to place a tube blank (01), wherein the tube blank (01) comprises concrete and a thin steel cylinder (12), and the tire frame (2) can drive the tube blank (01) to rotate; A shaping machine (3) is used to shape the steel wire drawn from the steel wire reel into a straight line; An anti-corrosion layer setting machine is arranged between the tire frame (2) and the shaping machine (3); the straight steel wire trimmed by the shaping machine (3) passes through the anti-corrosion layer setting machine and is then wound onto the surface of the tube blank (01); the anti-corrosion layer setting machine is used to set the first anti-corrosion layer on the straight steel wire to form the anti-corrosion steel wire; the rotational force of the tire frame (2) pulls the anti-corrosion steel wire to move; The rotational linear speed of the tire frame (2) is greater than the feeding linear speed of the steel wire into the shaping machine (3), so that the steel wire is prestressed and straightened.

8. The forming equipment for prestressed concrete cylinder pipe according to claim 7, characterized in that: The anti-corrosion layer setting machine includes a spray box (4) and a coating curing furnace (5), and the shaping machine (3), the spray box (4), the coating curing furnace (5) and the tire frame (2) are arranged in sequence; The spray box (4) is used for spraying anti-corrosion coating onto the straight steel wire; The coating curing furnace (5) is used to bake the straight steel wire after spraying the anti-corrosion coating, and to fix the first anti-corrosion layer on the surface of the straight steel wire.

9. The forming equipment for prestressed concrete cylinder pipe according to claim 8, characterized in that: The spray box (4) is provided with a first nozzle (41) and a second nozzle (42); The first nozzle (41) is used for spraying primer; The second nozzle (42) is used for spraying topcoat.

10. The forming equipment for prestressed concrete cylinder pipe according to any one of claims 7 to 9, characterized in that: The shaping machine (3) comprises a plurality of pressing wheel groups (31), wherein the pressing wheel groups (31) are symmetrically arranged, and steel wires are pressed between the symmetrically arranged pressing wheel groups (31).

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