阅读说明：本技术 提高管道寿命的装置及其施工方法 (Device for prolonging service life of pipeline and construction method thereof ) 是由 信绍广 何齐书 李宁 宋亚峰 徐军 左超 于 2020-05-22 设计创作，主要内容包括：本发明提供了一种提高管道寿命的装置及其施工方法,属于金属管道技术领域,提高管道寿命的装置用于安装在两个金属管承口与插口的连接处,包括阳极构件、第一电缆、散热器以及第二电缆,所述阳极构件用于盛装阳极材料；所述第一电缆一端与所述阳极构件导电连接,另一端与一所述金属管的承口外周面导电连接；所述散热器设于所述第一电缆上；所述第二电缆一端与一所述金属管的承口端面导电连接,另一端与另一所述金属管插口外周面导电连接。本发明提高管道寿命的装置中阳极的材料为电位比管道材质更负的金属和合金(如锌或镁),阳极构件先溶解释放出的电流使球墨铸铁管道阴极极化到所需的电位,从而使金属管道得到保护,延长金属管道的使用寿命。(The invention provides a device for prolonging the service life of a pipeline and a construction method thereof, belonging to the technical field of metal pipelines, wherein the device for prolonging the service life of the pipeline is used for being arranged at the joint of bellmouths and spigots of two metal pipes and comprises an anode component, a first cable, a radiator and a second cable, wherein the anode component is used for containing an anode material; one end of the first cable is electrically connected with the anode component, and the other end of the first cable is electrically connected with the outer peripheral surface of the socket of the metal tube; the radiator is arranged on the first cable; one end of the second cable is in conductive connection with the end face of the female end of one metal pipe, and the other end of the second cable is in conductive connection with the peripheral face of the socket of the other metal pipe. The anode material in the device for prolonging the service life of the pipeline is metal and alloy (such as zinc or magnesium) with more negative potential than the pipeline material, and the anode component dissolves and releases current to polarize the cathode of the nodular cast iron pipeline to the required potential, so that the metal pipeline is protected, and the service life of the metal pipeline is prolonged.)

1. Improve device in pipeline life-span for install in the junction of two tubular metal resonator bellmouths and socket, its characterized in that includes:

an anode member for forming an anode;

one end of the first cable is electrically connected with the anode component, and the other end of the first cable is electrically connected with the outer peripheral surface of the bellmouth;

the radiator is arranged on the first cable; and

and one end of the second cable is electrically connected with the end face of the socket, and the other end of the second cable is electrically connected with the peripheral face of the socket which is spliced with the socket.

2. The apparatus for increasing the life of a pipe as set forth in claim 1, wherein said anode member comprises:

an anode block;

the outer package is coated on the periphery of the anode block; and

and the filler is filled between the outer package and the anode block and is used for preventing the anode block from being oxidized.

3. The apparatus for increasing the lifespan of a tube as recited in claim 1, wherein said first cable has two pieces, one of said first cables has one end conductively connected to said anode member and the other end conductively connected to said first connection point of said heat sink, the other of said first cables has one end conductively connected to said second connection point of said heat sink and the other end conductively connected to said outer circumferential surface of said socket.

4. The apparatus of claim 3, wherein the heat sink is an axisymmetric member, and a line connecting the first connection point and the second connection point coincides with an axis of symmetry of the heat sink.

5. The construction method of the device for improving the life span of the pipeline, which is used for installing the device for improving the life span of the pipeline according to any one of claims 1 to 4, comprises the following steps:

preparing the anode member;

welding the anode member to one end of the first cable;

mounting the heat sink on the first cable;

welding the other end of the first cable to the peripheral surface of the socket;

welding one end of the second cable to the end face of the socket, and welding the other end of the second cable to the peripheral face of the socket in plug connection with the socket;

burying the anode member.

6. The method of constructing an apparatus for increasing a lifespan of a pipe according to claim 5, wherein the anode member includes an anode block, an exterior package wrapping the outer circumference of the anode block, and a filler filled between the exterior package and the anode block; the preparing the anode member includes:

cleaning the outer surface of the anode block

Filling the filler into the overpack;

and enabling the thickness of the filler on the periphery of the anode block to be consistent, and compacting the filler.

7. The method for constructing a device for prolonging the service life of a pipeline as claimed in claim 5, wherein the radiator is an axisymmetrical member, the radiator is provided with a first connecting point and a second connecting point, the connecting line of the first connecting point and the second connecting point is coincident with the symmetry axis of the radiator, and the number of the first cables is two; said mounting said heat sink on said first cable, comprising:

welding the other end of one of the first cables with the first connecting point;

welding an end of another one of the first cables to the second connection point;

and performing insulation treatment on the first connecting point and the second connecting point.

8. The method of constructing a device for increasing a lifetime of a pipe according to claim 5, wherein said welding one end of said second cable to an end surface of said socket and the other end to an outer circumferential surface of said socket to which said socket is to be inserted, comprises:

removing the insulating layer at the position to be welded of the end face of the socket and the peripheral face of the socket in plug connection with the socket, so that the position to be welded of the end face of the socket and the peripheral face of the socket is a metal luster surface with a preset area;

welding two ends of the second cable to the socket end face and the position to be welded on the periphery of the socket respectively;

and reserving a serpentine bend at the position of the second cable, which is close to the welding point.

9. The method of claim 8, wherein the welding of the two ends of the second cable to the socket end face and the to-be-welded position on the socket outer circumference further comprises:

preheating the metal tube;

welding heads are prepared on the end face of the socket and the peripheral surface of the socket;

and welding the second cable with the welding head.

10. The method for constructing the device for prolonging the service life of the pipeline according to claim 6, wherein the step of burying the anode member specifically comprises the steps of:

drilling a hole at a preset position;

placing the anode member into a hole;

watering the holes to make the filler fully absorb water;

and filling soil back into the holes to bury the anode components.

Technical Field

The invention belongs to the technical field of metal pipelines, and particularly relates to a device for prolonging the service life of a pipeline and a construction method thereof.

Background

The heating water conveyed by the heating pipeline is mainly high-temperature water with the temperature of 70-130 ℃, and most heating pipelines are steel pipelines, so that in recent years, many pipeline leakage accidents are caused, casualties are caused, and great panic is caused.

The ductile cast iron pipe has excellent corrosion resistance, and the service life of the pipeline is prolonged by adopting a flexible interface mode of socket connection. However, when the nodular cast iron pipeline is used as a heat distribution pipeline, the nodular cast iron pipeline is not suitable for spraying zinc on the surface of the pipeline for corrosion prevention, once the temperature is high in the process of using a zinc material as an anode for corrosion prevention, potential transfer can occur, zinc becomes a cathode, the pipeline becomes an anode, and the corrosion of the pipeline is accelerated.

In addition, a gap between the pipeline connecting bell and spigot is generally sealed by injecting a foaming agent and wrapping the foaming agent by using a heat-shrinkable sleeve, but the heat-shrinkable sleeve is poor in sealing effect and easy to damage, once the heat-shrinkable sleeve is damaged, moisture in soil continuously enters the gap of the pipeline bell and spigot interface through a gap of the heat-shrinkable sleeve and a hole of the foaming agent, so that a pipeline substrate is seriously corroded, even a hole is leaked, and the service life of a pipeline is shortened.

Disclosure of Invention

The invention aims to provide a device for prolonging the service life of a pipeline and a construction method thereof, and aims to solve the technical problem that the service life of the pipeline is short when a nodular cast iron pipe is used as a heating pipeline.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a device for improving pipeline life-span, be used for installing at the junction of two tubular metal resonator bellmouths and socket, include:

an anode member for forming an anode;

one end of the first cable is electrically connected with the anode component, and the other end of the first cable is electrically connected with the outer peripheral surface of the bellmouth;

the radiator is arranged on the first cable; and

and one end of the second cable is electrically connected with the end face of the socket, and the other end of the second cable is electrically connected with the peripheral face of the socket which is spliced with the socket.

As another embodiment of the present application, the anode member includes:

an anode block;

the outer package is coated on the periphery of the anode block; and

and the filler is filled between the outer package and the anode block and is used for preventing the anode block from being oxidized.

As another embodiment of the present application, the first cable has two cables, one of the two cables has one end electrically connected to the anode member and the other end electrically connected to the first connection point of the heat sink, and the other cable has one end electrically connected to the second connection point of the heat sink and the other end electrically connected to the outer peripheral surface of the socket.

As another embodiment of the present application, the heat sink is an axisymmetrical member, and a line connecting the first connection point and the second connection point coincides with a symmetry axis of the heat sink.

The device for prolonging the service life of the pipeline has the advantages that: compared with the prior art, the device for prolonging the service life of the pipeline has the advantages that the anode component is buried underground and soaked, one end of the first cable is in conductive connection with the anode component, the other end of the first cable is in conductive connection with the periphery of the bellmouth, one end of the second cable is in conductive connection with the end face of the bellmouth of the metal pipe, the other end of the second cable is in conductive connection with the peripheral face of the socket in plug-in connection with the bellmouth, the anode component is soaked and dissolved to form an anode in the circuit, and the pipeline forms a cathode in the circuit. The anode material in the device for prolonging the service life of the pipeline is metal and alloy (such as zinc or magnesium) with more negative potential than the pipeline material, and the anode component dissolves the released current firstly to polarize the cathode of the nodular cast iron pipeline to the required potential, so that the metal pipeline is protected, and the service life of the metal pipeline is prolonged; the socket and the socket at the joint of the two metal pipes are provided with the second cable, and the second cable is also positioned at the cathode in the circuit, so that the weak part at the socket joint gap of the two metal pipes is protected, the corrosion at the position is weakened, and the service life of the pipeline is prolonged; the heat in the first cable can be effectively reduced through the radiator, the reversal of the anode and the cathode under the condition of overhigh temperature is prevented, an external power supply is not needed by the device, the interference to adjacent metal buildings and metal pipelines is very small, when the abrasion part of the pipeline is more, the current released by the anode is increased, self-regulation is realized, and daily maintenance is not needed.

The invention also provides a construction method of the device for prolonging the service life of the pipeline, which is used for installing the device for prolonging the service life of the pipeline and comprises the following steps:

preparing the anode member;

welding the anode member to one end of the first cable;

mounting the heat sink on the first cable;

welding the other end of the first cable to the peripheral surface of the socket;

welding one end of the second cable to the end face of the socket, and welding the other end of the second cable to the peripheral face of the socket in plug connection with the socket;

burying the anode member.

As another embodiment of the present application, the anode member includes an anode block, an exterior package wrapping the outer circumference of the anode block, and a filler filled between the exterior package and the anode block; the preparing the anode member includes:

cleaning the outer surface of the anode block

Filling the filler into the overpack;

and enabling the thickness of the filler on the periphery of the anode block to be consistent, and compacting the filler.

As another embodiment of the present application, the heat sink is an axisymmetrical component, a first connection point and a second connection point are provided on the heat sink, a connection line of the first connection point and the second connection point coincides with a symmetry axis of the heat sink, and the number of the first cables is two; said mounting said heat sink on said first cable, comprising:

welding the other end of one of the first cables with the first connecting point;

welding an end of another one of the first cables to the second connection point;

and performing insulation treatment on the first connecting point and the second connecting point.

As another embodiment of the present invention, the welding of one end of the second cable to the end surface of the socket and the welding of the other end to the outer peripheral surface of the socket to which the socket is to be inserted includes:

removing the insulating layer at the position to be welded of the end face of the socket and the peripheral face of the socket in plug connection with the socket, so that the position to be welded of the end face of the socket and the peripheral face of the socket is a metal luster surface with a preset area;

welding two ends of the second cable to the socket end face and the position to be welded on the periphery of the socket respectively;

and reserving a serpentine bend at the position of the second cable, which is close to the welding point.

As another embodiment of the present application, the welding the two ends of the second cable to the positions to be welded on the socket end face and the socket periphery respectively further includes:

preheating the metal tube;

welding heads are prepared on the end face of the socket and the peripheral surface of the socket;

and welding the second cable with the welding head.

As another embodiment of the present application, the burying of the anode member specifically includes:

drilling a hole at a preset position;

placing the anode member into a hole;

watering the holes to make the filler fully absorb water;

and filling soil back into the holes to bury the anode components.

The invention provides a construction method of a device for prolonging the service life of a pipeline, which comprises the following steps: compared with the prior art, the construction method of the device for prolonging the service life of the pipeline provided by the invention comprises the steps of firstly preparing the anode component; welding the anode member to one end of the first cable; mounting a heat sink on the first cable; welding the other end of the first cable to the peripheral surface of the socket; welding one end of a second cable to the end face of the socket, and welding the other end of the second cable to the outer peripheral face of a socket spliced with the socket; the anode member is embedded. According to the pipeline service life construction method provided by the invention, the anode which can release current by dissolving is formed by embedding the anode member, so that the problem that the existing pipeline cannot be directly sprayed with a sacrificial anode metal coating on the outer wall of the metal pipeline is solved, zinc or magnesium is used as an anode material, the embedded anode member dissolves and releases current by itself, the embedded anode member serves as an anode and the pipeline serves as a cathode, and the pipeline is protected by dissolving of the anode member by itself, so that the corrosion of the pipeline is delayed, and the service life of the metal pipeline is prolonged; the circuit is radiated by the radiator on the first cable, so that the zinc or magnesium is prevented from becoming a cathode under the condition of exceeding 50 ℃, and the service life of the device for prolonging the service life of the pipeline is effectively prolonged.

Drawings

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

Fig. 1 is a schematic structural diagram of an apparatus for increasing a lifetime of a pipeline according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a device for prolonging the service life of a pipeline according to a second embodiment of the present invention.

In the figure: 1. an anode member; 101. packaging; 102. an anode block; 103. a filler; 2. a first cable; 3. a heat sink; 4. a second cable; 5. welding a head; 6. a socket; 7. and (4) inserting the socket.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2 together, the device for improving the service life of the pipeline provided by the present invention will now be described. The device for prolonging the service life of the pipeline comprises an anode component 1, a first cable 2, a radiator 3 and a second cable 4, wherein the anode component 1 is used for forming an anode; one end of the first cable 2 is electrically connected with the anode component, and the other end is electrically connected with the peripheral surface of a bellmouth 6; the radiator 3 is arranged on the first cable 2; one end of the second cable 4 is electrically connected with the end surface of a bell mouth 6, and the other end is electrically connected with the peripheral surface of a socket 7 which is spliced with the bell mouth 6.

Compared with the prior art, the device for prolonging the service life of the pipeline, provided by the invention, has the advantages that the anode member 1 is buried underground and soaked, one end of the first cable 2 is in conductive connection with the anode member 1, the other end of the first cable is in conductive connection with the periphery of the socket 6, one end of the second cable 4 is in conductive connection with the end surface of the socket 6 of the metal pipe, the other end of the second cable is in conductive connection with the peripheral surface of the socket 7 which is in plug-in connection with the socket 6, the anode member 1 is soaked and dissolved to form an anode in a circuit, and the pipeline forms a cathode in the circuit. The anode material in the device for prolonging the service life of the pipeline is metal and alloy (such as zinc or magnesium) with more negative potential than the pipeline material, the anode component 1 firstly dissolves released current to enable the cathode of the nodular cast iron pipeline to be polarized to the required potential, thereby realizing the protection of the nodular cast iron pipeline and prolonging the service life of the metal pipeline; the second cable 4 is arranged at the bell mouth 6 and the spigot 7 at the joint of the two metal pipes, and the part is also positioned at the cathode in the circuit, so that the weak part at the socket joint gap of the two metal pipes is protected, the corrosion at the position is weakened, and the service life of the pipeline is prolonged; can effectively reduce the heat in first cable 2 through radiator 3, prevent the reversal of positive pole and negative pole under the too high condition of temperature, the device does not need external power source, and is very little to adjacent metal building and metal pipeline's interference, and when the wearing and tearing department of pipeline self was more, the electric current increase of positive pole release realized self-regulation, need not carry out routine maintenance again.

Referring to fig. 1 and 2, an anode member 1 includes an anode block 102, an outer package 101 and a filler 103, wherein the outer package 101 is wrapped around the anode block 102; a filler 103 is filled between the exterior package 101 and the anode block 102 for preventing the anode block 102 from being oxidized. In the assembly process of the anode member 1, the anode block 102 is firstly placed in the outer package 101, then the filler 103 is filled into the outer package, the filler 103 is mainly carbon powder, and the filler 103 is uniformly arranged on the periphery of the anode block 102, so that the anode member 1 can be prevented from being oxidized after being wetted by water, the grounding resistance of the anode block 102 is reduced, and the service life of the anode block 102 is prolonged.

In this embodiment, the outer package 101 is made of a cloth material, and when the anode member 1 is watered, the outer package can sufficiently absorb moisture to accelerate the permeation of the anode member 1; the cloth outer package 101 can also effectively lock water to prevent the lack of moisture in the anode member 1 from affecting the discharge.

Referring to fig. 1 and 2, the first cables 2 have two ends, one end of one first cable 2 is electrically connected to the anode member 1, the other end is electrically connected to the first connection point of the heat sink 3, one end of the other first cable 2 is electrically connected to the second connection point of the heat sink 3, and the other end is electrically connected to the outer peripheral surface of the socket 6. One end of each of the two first cables 2 is connected to the radiator 3, when the current emitted by the anode component 1 flows through the first cable 2 and enters the radiator 3, the current can dissipate heat in the flowing process of the current on the radiator 3, then the current enters the socket 6 through the other first cable 2, the heat dissipation of the circuit can be efficiently realized through the direct circulation of the current on the radiator, the temperature is prevented from being too high, the metal polarity of the anode is ensured, the anode and the cathode are prevented from being interchanged, and the sacrificial anode plays a role in corrosion prevention of the nodular cast iron pipeline.

Referring to fig. 1 and 2, the heat sink 3 is an axisymmetric member, and a connection line between the first connection point and the second connection point coincides with a symmetry axis of the heat sink 3. The connection line of the first connection point and the second connection point is overlapped with the symmetry axis of the radiator 3, so that the same distance of current transmitted from two ends of the radiator can be ensured, the uniformity of current flowing is ensured, and the cathode protection of a pipeline is facilitated.

The heat sink 3 may be a heat dissipating ring or a heat dissipating disk. The shape of the radiator 3 is circular, the radiator 3 with an annular structure can accelerate the conduction of current, the two first cables 2 penetrate through the circle center of the radiator 3 and are distributed linearly, the same and shortest distance of the current transmitted from the two ends of the radiating ring is guaranteed, and the uniformity is guaranteed while the current flows rapidly; the heat dissipation area of the disc-shaped radiator 3 is large, the heat dissipation efficiency is high, the cooling of a circuit is facilitated, the anode and cathode exchange caused by overhigh temperature is prevented, and the pipeline is prevented from being accelerated to be corroded.

As another example, the shape of the heat sink 3 may be round, rod-like, or rectangular, as long as the heat dissipation condition is satisfied to reduce the temperature in the circuit to 50 ℃ or lower, and the cross-sectional shape of the heat sink 3 may be round or rectangular.

The invention also provides a construction method of the device for prolonging the service life of the pipeline, which is used for installing the device for prolonging the service life of the pipeline and comprises the following steps: preparing an anode member 1; welding the anode member 1 to one end of the first cable 2; mounting the heat sink 3 on the first cable 2; welding the other end of the first cable 2 to the peripheral surface of the socket 6; welding one end of a second cable 4 to the end surface of the socket 6, and welding the other end of the second cable to the peripheral surface of a socket 7 inserted into the socket 6; the anode member 1 is embedded.

Compared with the prior art, the construction method of the device for prolonging the service life of the pipeline provided by the invention comprises the steps of firstly preparing the anode member 1; welding the anode member 1 to one end of the first cable 2; mounting the heat sink 3 on the first cable 2; welding the other end of the first cable 2 to the peripheral surface of the socket 6; welding one end of a second cable 4 to the end surface of the socket 6, and welding the other end of the second cable to the peripheral surface of a socket 7 spliced with the socket 6; the anode member 1 is embedded. According to the pipeline service life construction method provided by the invention, the anode which can release current by self dissolution is formed by embedding the anode member 1, so that the problem that the existing pipeline cannot be directly sprayed with a sacrificial anode metal coating on the outer wall of the metal pipeline is solved, zinc or magnesium is used as an anode material, the embedded anode member dissolves and releases current by self, the embedded anode member is used as an anode, the pipeline is used as a cathode, and the dissolution of the anode member protects the pipeline, so that the corrosion of the pipeline is delayed, and the service life of the metal pipeline is prolonged; the circuit is radiated by the radiator 3 on the first cable 2, so that zinc or magnesium is prevented from becoming a cathode under the condition of exceeding 50 ℃, and the service life of the device for prolonging the service life of the pipeline is effectively prolonged.

Referring to fig. 1 and 2, an anode member includes an anode block, an outer package wrapping the outer periphery of the anode block, and a filler filled between the outer package and the anode block; preparing an anode member comprising: cleaning the outer surface of the anode block and filling the filler into the outer package; the thickness of the filler at the periphery of the anode block is consistent, and the filler is compacted. Before assembling the anode member 1, whether the surface of the anode block 102 has oil stains and oxides or not is checked, the oil stains and the oxides on the surface of the anode block 102 can reduce the activity of the anode block 102 and influence the generation of anode current, and the activity of the anode block 102 can be ensured by polishing the anode block 102 completely with abrasive paper, so that the smooth generation of the current on the anode block 102 is ensured; the filler 103 is mainly a mixture of powdered substances such as carbon powder and the like, and is uniformly mixed before filling, so that stones, soil, weeds and the like are not mixed in the mixing process, the contact resistance of the anode block 102 is prevented from being increased, the current transfer efficiency is reduced, and the corrosion prevention efficiency of a pipeline is reduced; when the anode block 102 is zinc, the thickness of the filler 103 around the anode block 102 is ensured to be 50mm, and when the anode block 102 is magnesium, the thickness of the filler 103 around the anode block 102 is ensured to be 70mm, so that the oxidation of the anode blocks 102 made of different materials can be effectively prevented, the grounding resistance of the anode block 102 is reduced, and the service life of the anode block 102 is prolonged.

As a specific embodiment of the construction method of the device for prolonging the service life of the pipeline provided by the present invention, the weight of the anode block needs to be calculated before the anode member is prepared, and the calculation formula of the weight of the anode block 102 is as follows:

W＝ξ*πD*S*γ(1)

wherein ξ is safety factor, pi is circumferential rate, D is outer diameter (m) of the pipeline, S is distance (m) between two anode components 1, and gamma is mass (kg/m) of anode block required by unit pipeline surface area²)。

For example, when zinc is used as the anode, the caliber of the pipeline is DN300, 200 meters of anode is buried, and the calculation formula is as follows:

w ξ × pi D × S × γ 1.1 × 3.14 × 0.326 × 200 × 0.2 × 45kg, so two sets of 25kg zinc blocks were used as anodes;

when magnesium is used as an anode, the caliber of the pipeline is DN600, an anode is embedded in a position of 200 meters, and the formula is as follows:

w- ξ × pi D × S × γ 1.1 × 3.14 × 0.635 × 200 × 0.13 ═ 57kg, two groups of 30kg magnesium blocks were used as anodes.

As a concrete implementation mode of the construction method of the device for prolonging the service life of the pipeline, the first cable 2 and the anode member 1 are welded by brazing or soldering, the grounding resistance of the group of auxiliary anode blocks 102 is measured after being buried, and is not more than 1 omega, if the requirement is not met, remedial measures are taken; when the anode material is zinc, the length of the welding line on the two sides is not less than 70mm, when the anode material is magnesium, the length of the welding line on the two sides is not less than 80mm, the joint of the welded first cable 2 and the copper core leaking out of the end face of the anode component 1 need to be protected from corrosion and insulated, the insulating material adopts epoxy resin, and after the corrosion is prevented, a pipe penetrating protection measure is adopted for the joint, so that the joint is prevented from being damaged. And after the welding, the connection and the antiseptic treatment of each point are confirmed to be qualified, backfilling soil and fixing. The length of the welding seam can enhance the connectivity between the first cable 2 and the anode member 1, so that the first cable 2 is not easy to break, and the firmness between the structures is enhanced.

Referring to fig. 1 and 2, as a specific embodiment of the method for constructing a device for increasing a lifetime of a pipeline, a heat sink 3 is an axisymmetric component, the heat sink 3 is provided with a first connection point and a second connection point, a connection line of the first connection point and the second connection point coincides with a symmetry axis of the heat sink 3, two first cables 2 are provided, and the heat sink 3 is mounted on the first cables 2, including: welding the other end of one first cable 2 with a first connecting point; welding one end of another first cable 2 to the second connection point; and carrying out insulation treatment on the first connecting point and the second connecting point. The two sections of the first cables 2 are welded with the radiator 3, the two sections of the first cables 2 are arranged on the radiator 3 at an angle of 180 degrees, so that the current flow is short, the transmission distances from the two ends of the radiator 3 are the same, and the uniformity of current flow is ensured; the radiator 3 and the first cable 2 are welded in a brazing mode, and the welded cable joint is subjected to anticorrosion and insulation treatment through epoxy resin, so that the joint is prevented from being damaged.

As a specific embodiment of the method for constructing the device for improving the service life of the pipe according to the present invention, the method for welding one end of the second cable 4 to the end surface of the socket 6 and the other end to the outer circumferential surface of the socket 7 to which the socket 6 is inserted includes: removing the insulating layer at the position to be welded on the end surface of the socket 6 and the peripheral surface of the socket 7 spliced with the socket 6 to ensure that the position to be welded on the end surface of the socket 6 and the peripheral surface of the socket 7 is a metal luster surface with a preset area; respectively welding two ends of the second cable 4 to the end surface of the socket 6 and the position to be welded on the periphery of the socket 7; a serpentine bend is reserved in the second cable 2 adjacent to the welding point. Before welding, the outer layer of the pipeline is polished, a scraper or a file is used for enabling the position to be welded on the pipeline to have a metal luster surface with enough size, the two ends of the second cable 4 are stripped of insulating layers, the core wire extends out by 50mm, the core wire of the second cable 4 needs to be clean, dry and free of oil and grease, and the firmness of connection between the second cable 4 and the pipeline after welding is guaranteed.

As a specific embodiment of the method for constructing the device for prolonging the service life of the pipeline according to the present invention, the method for welding the two ends of the second cable 4 to the end surface of the socket 6 and the position to be welded on the outer periphery of the socket 7 respectively further comprises: preheating a metal pipe; preparing welding heads 5 on the end surface of the socket 6 and the peripheral surface of the socket 7; the second cable 4 is soldered to the soldering head 5. Preheating is carried out before pipeline welding, the preheating temperature is about 110 ℃, and the quality problem of a pipeline welding head 5 caused by local heating of a pipeline in the welding process can be prevented.

The surface of the cast iron pipeline is provided with an anticorrosive coating, firstly, a 50 x 50 opening is formed on the anticorrosive coating of the pipeline, the anticorrosive coating is stripped off, and the anticorrosive coating is polished by abrasive paper to expose the metallic luster, so that the surface is required to be smooth, clean, bright, dry and free of grease; stripping off the insulating protective layer of the second cable 4, and leaking a section of copper core with the length of about 50mm, wherein the leaking length of the copper core is determined according to the size of the mould; placing a mould in the center of a derusting area, wherein the mould and the surface of a welded cast pipe are tightly combined without a gap; inserting one end of a welding head 5 into a hole groove at the bottom of the die, and ensuring the position of the welding head 5 to be in place; opening the top cover, putting the metal gasket into the mold, blocking the inner hole of the metal gasket, and putting the metal gasket into the inner hole of the mold in a concave-convex shape (with the convex surface facing downwards); opening thermite (big bag), pouring into the inner hole of the mould, and compacting the welding flux by a wood bar; opening the ignition powder (small bag), scattering the ignition powder on the surface of the welding flux and a little on the edge of the mould (so as to be ignited by a fire gun); covering the mould cover, and igniting the ignition powder at the edge of the mould by using an ignition gun after all the mould is ready; igniting the welding flux by the ignition powder, melting the gasket into liquid after the welding flux is burnt, and flowing to the copper core cable along the inner hole; and after 10 seconds, the die is pulled out, slag is removed, the welding head 5 is successfully welded, residues in the die are removed by tools such as a steel brush, a hairbrush and the like, the welding head 5 at the other end is sequentially welded, and finally the copper core cable is connected with the welding head 5 and is firmly welded.

And after welding is finished and the temperature is reduced, checking a welding seam, and after the welding seam is qualified, repairing the welding part, the exposed matrix and the copper conductor, wherein the repairing material is epoxy resin. Enough margin is reserved when the lead cable is laid, and snakelike bends are reserved at welding spots and other connecting positions to prevent the cable or the welding spots from being pulled off under the stress.

Specifically, the shape of the welding head 5 may be semicircular or small circular, the second cable 4 may also be directly connected to the pipeline for welding during the welding process, and the material of the welding head 5 may be copper, steel, aluminum, stainless steel, or the like.

As a specific implementation mode of the construction method of the device for prolonging the service life of the pipeline, after the pipeline is welded with the second cable 4 or the first cable 2, a strength test is carried out on a welding spot on the pipeline, and the repairing operation can be carried out only after the welding spot is qualified. Before repairing, hot melt adhesive is filled, then a heat shrinkable sleeve is wrapped, and then an adhesive tape is wound for protection. It is necessary to ensure that the welding is strong and the insulation properties are good.

As a specific embodiment of the method for constructing the device for prolonging the service life of the pipeline provided by the present invention, the method for burying the anode member 1 specifically includes: drilling a hole at a preset position; placing the anode member 1 into the hole; watering in the hole to make the filler absorb water; and filling soil back into the holes to bury the anode components. The distance between the embedded position of the anode member 1 and the outer wall of the pipeline is 0.5-2mm, and the anode member is positioned on the side or above the pipeline, and the concrete condition is determined according to the concrete working condition of the site; the embedding depth of the anode member 1 is required to be below a frozen soil layer, and is generally required to be consistent with the depth of the pipeline, and for the installed pipeline, the anode member 1 can be embedded at the central position of the pipeline, so that the central position of the anode member 1 is at the same height with the central position of the pipeline; the duration of submerging the anode member 1 in water is more than 2-3 minutes, so that the anode member 1 can be effectively ensured to be fully soaked in water, and the anode member 1 can be ensured to be decomposed and discharged; when the anode member 1 is buried for the first time, fine soil is used, so that the water diffusion can be effectively slowed down, and the service life of the anode member 1 is prolonged.

As a specific embodiment of the method for constructing the device for increasing the lifespan of a pipeline according to the present invention, the anode member 1 is placed in the hole in a vertical or horizontal manner. When vertical embedding is adopted, the installation of the pipeline and the embedding of the anode member 1 can be synchronously carried out, the embedding position of the anode member 1 is about 1.3 meters away from the pipeline, the diameter of a drilled hole is phi 400, the drilling mode is mainly manual drilling, the method is mainly suitable for the pipeline with larger pipe diameter, and the uniformity of current supplement on the peripheral surface of the pipeline can be ensured; when horizontal burying is adopted, the pipeline installation and the anode member 1 burying can be synchronously carried out, the burying position of the anode member 1 is about 1.8 meters away from the pipeline, the burying depth is consistent with the pipeline depth, and the method is mainly suitable for pipelines with smaller pipe diameters.

As a specific implementation mode of the construction method of the device for prolonging the service life of the pipeline, the first cable 2 or the second cable 4 is connected with the pipeline through a welding head, the pipeline needs to be preheated, in addition, the first cable or the second cable 4 can be welded with the pipeline through electric welding or brazing, the welding mode is required to be firm, the welding seam is uniform, the resistance requirement of the welding point is less than 4 × 10-4 omega, and the strength of the welding point is greater than the bearing capacity of the copper core cable after welding.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.