阅读说明：本技术 排水管道快速热熔接管内衬修复工艺 (Process for repairing lining of drainage pipeline through quick hot melting ) 是由 赵妍婷 张广军 于 2020-05-12 设计创作，主要内容包括：本发明公开一种排水管道快速热熔接管内衬修复工艺,涉及管道修复技术领域,包括以下步骤：步骤一、将被修复管道中的水部分排出或全部排出,把拉管装置和压紧装置分别设置于被修复管道的两端；步骤二、将一个塑料管由远离拉管装置的一端装入被修复管道中,且使得拉管装置与塑料管连接；步骤三、下放另一个塑料管,对齐两个塑料管,通过压紧装置顶紧外侧的塑料管来夹紧两个塑料管之间的金属加热片,对金属加热片通电使得两个塑料管热熔连接,拉管装置将粘接好的塑料管拉入被修复管道中；步骤四、继续下放另外的塑料管并重复步骤三,直至塑料管填充满被修复管道。该工艺操作简便,降低了成本,提高了施工速度,可以带水作业施工,扩大适用范围。(The invention discloses a rapid thermal fusion welding pipe lining repairing process for a drainage pipeline, which relates to the technical field of pipeline repairing and comprises the following steps: step one, discharging part or all of water in the repaired pipeline, and respectively arranging a pipe pulling device and a pressing device at two ends of the repaired pipeline; step two, putting a plastic pipe into the repaired pipeline from one end far away from the pipe drawing device, and connecting the pipe drawing device with the plastic pipe; thirdly, another plastic pipe is placed downwards, the two plastic pipes are aligned, the plastic pipe on the outer side is tightly propped by a pressing device to clamp the metal heating sheet between the two plastic pipes, the metal heating sheet is electrified to enable the two plastic pipes to be in hot-melt connection, and the pipe pulling device pulls the well-bonded plastic pipe into the repaired pipeline; and step four, continuously lowering another plastic pipe and repeating the step three until the repaired pipeline is filled with the plastic pipe. The process is simple and convenient to operate, reduces the cost, improves the construction speed, can be constructed by water operation, and enlarges the application range.)

1. A rapid thermal fusion welding pipe lining repairing process for a drainage pipeline is characterized by comprising the following steps:

step one, discharging part or all of water in the repaired pipeline, and respectively arranging a pipe pulling device and a pressing device at two ends of the repaired pipeline;

step two, a plastic pipe is put into the repaired pipeline from one end far away from the pipe pulling device, and the pipe pulling device is connected with the plastic pipe;

thirdly, another plastic pipe is placed downwards, the two plastic pipes are aligned, the plastic pipe on the outer side is tightly pushed by a pressing device to clamp a metal heating sheet between the two plastic pipes, the metal heating sheet is electrified to connect the two plastic pipes in a hot melting mode, and the pipe pulling device pulls the bonded plastic pipe into the repaired pipe;

and step four, continuously lowering the other plastic pipes and repeating the step three, and sequentially carrying out hot melting connection and pipe drawing on the plurality of plastic pipes until the repaired pipeline is filled with the plurality of plastic pipes.

2. The rapid thermal fusion repair process for the inner liner of the drainage pipeline according to claim 1, wherein in the third step, the two plastic pipes are aligned with a gap between the two plastic pipes, the metal heating plate is placed between the two plastic pipes, and the two plastic pipes are compressed by the compressing device.

3. The rapid thermal fusion repair process for the inner liner of the drainage pipeline according to claim 1, wherein in the third step, the metal heating plate is bonded to one end of the plastic pipe before the plastic pipe is placed, and the metal heating plate is positioned between the two plastic pipes after the plastic pipe is placed, and the two plastic pipes are compressed by the compressing device.

4. The quick hot-melt pipe liner repairing process for the drainage pipeline according to claim 1, wherein in the third step, the metal heating sheet is electrified to melt the opposite end surfaces of the two plastic pipes, the electrifying time is t1, then the metal heating sheet is powered off and stays for a period of time t2 to enable the two plastic pipes to be firmly bonded, and the bonded plastic pipes are pulled into the repaired pipe through the pipe pulling device.

5. The rapid thermal fusion process for repairing the liner of the drain pipe according to claim 4, wherein in the third step, the energization time t1 is 3-150 s.

6. The rapid thermal fusion welding pipe lining repairing process for the drainage pipeline according to claim 4, wherein in the third step, the staying time t2 is 0-5min after power failure, the pipe pulling device pulls the pipe and the pipe pushing device pushes the pipe; or the retention time t2 is more than 5min after power failure, and the pipe jacking is not required by the pressing device.

7. The rapid thermal fusion welding pipe liner repairing process for the drainage pipeline according to claim 1, wherein in the third step, two wires are arranged on the metal heating sheet, a thermal fusion transformer is adopted to connect the two wires through the two heating wires respectively to heat the metal heating sheet in an electrified mode, the working voltage of the metal heating sheet in the electrified mode is a safe voltage below 36v, the diameter of each wire is 1.5-20mm, each wire comprises 3-300 copper wires, the diameter of each copper wire is 0.1-1.5mm, and the length of each wire is more than 10 mm.

8. The rapid thermal fusion repair process for the inner liner of the drainage pipeline according to claim 1, wherein in the third step, a rounding device is used to round the butt joint of the two plastic pipes to be fused, so that the two plastic pipes are aligned, and the compressing device is used to compress the two plastic pipes after rounding.

9. The quick hot-melt drain pipe liner repair process according to claim 8, wherein the end surface of the plastic pipe after rounding is circular, the metal heating sheet is circular, the outer diameter of the metal heating sheet is larger than or equal to the outer diameter of the plastic pipe, the difference between the outer diameter of the metal heating sheet and the outer diameter of the plastic pipe is smaller than 9mm, the inner diameter of the metal heating sheet is smaller than the inner diameter of the plastic pipe, and the difference between the inner diameter of the metal heating sheet and the inner diameter of the plastic pipe is smaller than 9 mm.

10. The quick hot-melting connecting pipe inner lining repair process for the drainage pipeline according to claim 1, wherein the pipe pulling device comprises a hydraulic power station, a hydraulic cylinder, a pull head and a plurality of short rods, the hydraulic power station is placed on the ground, the hydraulic cylinder is placed at one end of the repaired pipeline, the hydraulic power station is connected with the hydraulic cylinder, a plurality of the short rods are connected to a piston rod of the hydraulic cylinder, two adjacent short rods are detachably connected, the pull head is connected to one short rod far away from the hydraulic cylinder, the pull head is used for connecting the plastic pipes, and in the fourth step, the short rods in the pipe pulling device are correspondingly detached as the plurality of plastic pipes are pulled into the repaired pipeline.

Technical Field

The invention relates to the technical field of pipeline repair, in particular to a rapid thermal fusion pipe lining repair process for a drainage pipeline.

Background

The drainage pipeline with long operation time is easy to generate the conditions of pipe body strength reduction, fracture, dislocation and sewage leakage due to corrosion, and needs to be repaired in time to avoid road collapse and damage to traffic safety and lives and properties of people. The existing pipeline repairing technology comprises a CIPP hot water curing repairing technology, an ultraviolet curing repairing technology, a spiral winding steel strip repairing technology, a thermoplastic pipe repairing technology, a mechanical intubation lining repairing technology and the like, wherein the CIPP hot water curing repairing technology has the defect that the repairing time is long and can be finished within tens of hours; the ultraviolet curing repair technology has the defects of high manufacturing cost; the repair technology of the spirally wound steel strip has the defects that the diameter of the original pipeline is reduced too much; the thermoplastic pipe repairing technology has the defects of complex construction technology, high-pressure steam heating requirement and potential safety hazard; among the mechanical type intubate inside lining repair technology, it docks to become pressure behind the primary and secondary mouth with the nozzle stub processing, the butt joint interface of processing nozzle stub can cause the waste of tubular product, there is the relatively poor problem of leakproofness after the nozzle stub is pegged graft simultaneously, need push pipe equipment and trombone slide device to exert thrust and pulling force by the nozzle stub after the both ends butt joint of restoration pipeline, the during operation is mainly with thrust usually, use the pulling force as assisting, can exert 10-120 tons of thrust for the nozzle stub, the used tubular product of this intubate technology must be enough thick just can be avoided the nozzle stub top bad when pushing the pipe, for this reason generally need adopt the tubular product of 8 kilograms or 10 kilograms pressure, the cost is higher, push pipe equipment and trombone slide device exert the not good condition of cooperation simultaneously and appear easily, also can cause the harm to the nozzle stub. In addition, the existing hot melting machine is used for welding, a thick and heavy metal plate is heated and then placed at the joint of the pipe joints, the metal plate is taken out after the joints at two sides are melted through pressurization, and then the joints at two sides are butted and solidified, so that the defects that the welding time is long, 20-40 minutes are needed, the space usage is large, and the operation under a drainage well is not suitable are overcome.

Disclosure of Invention

In order to solve the technical problems, the invention provides a rapid thermal fusion pipe lining repairing process for a drainage pipe, which is simple and convenient to operate, reduces the cost, improves the construction speed, can be constructed by water-carrying operation, and enlarges the application range.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a rapid thermal fusion welding pipe lining repairing process for a drainage pipeline, which comprises the following steps:

step one, discharging part or all of water in the repaired pipeline, and respectively arranging a pipe pulling device and a pressing device at two ends of the repaired pipeline;

step two, a plastic pipe is put into the repaired pipeline from one end far away from the pipe pulling device, and the pipe pulling device is connected with the plastic pipe;

thirdly, another plastic pipe is placed downwards, the two plastic pipes are aligned, the plastic pipe on the outer side is tightly pushed by a pressing device to clamp a metal heating sheet between the two plastic pipes, the metal heating sheet is electrified to connect the two plastic pipes in a hot melting mode, and the pipe pulling device pulls the bonded plastic pipe into the repaired pipe;

and step four, continuously lowering the other plastic pipes and repeating the step three, and sequentially carrying out hot melting connection and pipe drawing on the plurality of plastic pipes until the repaired pipeline is filled with the plurality of plastic pipes.

Preferably, in the third step, two of the plastic tubes are aligned with a gap between the two plastic tubes, the metal heating sheet is placed between the two plastic tubes, and the two plastic tubes are compressed by the compressing device.

Preferably, in the third step, the metal heating plate is bonded to one end of the plastic tube before the plastic tube is placed, and after the plastic tube is placed, the metal heating plate is located between the two plastic tubes and the two plastic tubes are pressed by the pressing device.

Preferably, in the third step, the metal heating sheet is electrified to melt the opposite end faces of the two plastic pipes, the electrifying time is t1, then the power is cut off, the stay time is t2, the two plastic pipes are firmly bonded, and the bonded plastic pipes are pulled into the repaired pipeline through the pipe pulling device.

Preferably, in step three, the power-on time t1 is 3-150 s.

Preferably, in the third step, the stay time t2 is 0-5min after power failure, and the pipe pulling device pulls the pipe and the pressing device pushes the pipe; or the retention time t2 is more than 5min after power failure, and the pipe jacking is not required by the pressing device.

Preferably, in the third step, two wires are arranged on the metal heating sheet, the metal heating sheet is subjected to power-on heating by connecting the two wires with a hot-melt transformer through the two heating wires respectively, the working voltage of the metal heating sheet during power-on is a safe voltage below 36v, the diameter of each wire is 1.5-20mm, each wire comprises 3-300 copper wires, the diameter of each copper wire is 0.1-1.5mm, and the length of each wire is more than 10 mm.

Preferably, in the third step, the butt joint part of the two plastic pipes needing to be subjected to hot melting is rounded through a rounding device, so that the two plastic pipes are aligned, and the pressing device is adopted to compress the two plastic pipes after rounding.

Preferably, after the lock circle the terminal surface of plastic tubing is ring shape, the metal heating plate is ring shape, the external diameter of metal heating plate is greater than the external diameter of plastic tubing, the external diameter of metal heating plate with the difference of the external diameter of plastic tubing is less than 9mm, the internal diameter of metal heating plate is less than the internal diameter of plastic tubing, the internal diameter of metal heating plate with the difference of the internal diameter of plastic tubing is less than 9 mm.

Preferably, the pipe drawing device comprises a hydraulic power station, a hydraulic cylinder, a pull head and a plurality of short rods, the hydraulic power station is placed on the ground, the hydraulic cylinder is placed at one end of the repaired pipeline, the hydraulic power station is connected with the hydraulic cylinder, a plurality of short rods are connected to a piston rod of the hydraulic cylinder, two adjacent short rods are detachably connected, one short rod far away from the hydraulic cylinder is connected with the pull head, the pull head is used for connecting the plastic pipe, and in the fourth step, the short rods in the pipe drawing device are correspondingly detached along with the pulling of the plurality of plastic pipes into the repaired pipeline.

Compared with the prior art, the invention has the following technical effects:

the invention provides a rapid thermal fusion pipe lining repairing process for a drainage pipeline. The mechanical equipment adopted in the invention mainly takes the pulling force as the main part, the pushing force is not needed, the operation is simple and convenient, the energy is saved, the strength required by the plastic pipe is reduced because the plastic pipe is not subjected to large jacking force any more, the plastic pipe with the pressure of 6 kilograms or less can be adopted, and the pipe cost is further reduced. The two ends of the plastic pipe adopted by the invention are straight, and the opposite insertion ports do not need to be machined by a lathe, so that the waste of the plastic pipe is avoided, the machining cost of the lathe is saved, meanwhile, the plastic pipe can be cut on a construction site by cutting equipment, the machining is simple and convenient, the transportation cost is saved, and the construction time is saved. The length of the existing short pipe with the connector is limited to be below 0.6m by the processing capacity of a lathe, the length of a plastic pipe adopted in a heat welding pipe is not limited, and the short pipe can be used for a length of more than 1m as long as the short pipe can be placed into a repaired pipeline under a drainage well, so that the number of the used plastic pipes is greatly reduced, and the construction speed is improved. The welding time required by the hot melting connection mode of the metal heating sheets is short, the connection strength between the plastic pipes is high, and the plastic pipes at two ends are continuously melted after being electrified and the surface moisture can be evaporated, so that the fusion of the two plastic pipes is not influenced, and the construction with water can be realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments 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 view of the rapid thermal welding repair process for the inner liner of the drain pipe according to the present invention.

Description of reference numerals: 1. a drainage well; 2. a plastic tube; 3. a metal heating plate; 4. a pressing member; 5. compressing the top plate; 6. thermally melting the transformer; 7. a heating wire; 8. a hydraulic cylinder; 9. a short bar; 10. a slider; 11. an oil pipe; 12. and (5) hydraulic power station.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a rapid thermal fusion welding pipe lining repairing process for a drainage pipe, which is simple and convenient to operate, reduces the cost, improves the construction speed, can be constructed by water operation, and enlarges the application range.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, the present embodiment provides a rapid thermal welding pipe liner repairing process for a drainage pipe, which includes the following steps:

step one, discharging part or all of water in the repaired pipeline, and respectively arranging a pipe pulling device and a pressing device at two ends of the repaired pipeline;

step two, putting one plastic pipe 2 into the repaired pipeline from one end far away from the pipe drawing device, and connecting the pipe drawing device with the plastic pipe 2;

thirdly, another plastic pipe 2 is put down, the two plastic pipes 2 are aligned, the plastic pipe 2 on the outer side is tightly propped by a pressing device to clamp the metal heating sheet 3 between the two plastic pipes 2, the metal heating sheet 3 is electrified to connect the two plastic pipes 2 in a hot melting mode, and the plastic pipe 2 which is well bonded is pulled into a repaired pipeline by a pipe pulling device;

and step four, continuously lowering the other plastic pipes 2 and repeating the step three, and sequentially carrying out hot melting connection and pipe drawing on the plurality of plastic pipes 2 until the plurality of plastic pipes 2 are filled with the repaired pipeline.

Mechanical equipment who adopts in this embodiment mainly is the pulling force, can not need thrust, and is more energy-conserving, and construction equipment reduces, and is easy and simple to handle, the safety risk of construction that has significantly reduced because plastic tubing 2 can not receive very big jacking force again for the required intensity of plastic tubing 2 reduces, can adopt 6 kilograms pressure and following plastic tubing, and then reduces the tubular product cost.

2 both ends of the plastic pipe that adopt in this embodiment are straight, need not process through the lathe and to inserting the interface, have avoided plastic pipe extravagant, and have saved lathe processing expense, and simultaneously, plastic pipe 2 in this embodiment can cut at the job site through cutting equipment, and processing is simple and convenient, has saved cost of transportation, has saved the engineering time. The length of the existing short pipe with the connector is limited below 0.6m by the processing capacity of a lathe, the length of the plastic pipe 2 adopted in the heat welding pipe process is not limited, and the short pipe can be used as long as the short pipe can be placed into a repaired pipeline below the drainage well 1, and the length of the short pipe can be more than 1m, so that the number of the plastic pipes 2 used is greatly reduced, and the construction speed is improved.

The required welding time of mode through 3 hot melt connections of metal heating plate is short in this embodiment, and joint strength is high between plastic tubing 2, because the plastic tubing 2 that adds both ends after the circular telegram constantly melts and can evaporate to dryness surface moisture, consequently does not influence the fusion of two plastic tubing 2, can take water operation construction.

The pressing device comprises a pressing part 4 and a pressing top plate 5, wherein the pressing top plate 5 is installed at one end of the pressing part 4, and the pressing part 4 is used for driving the pressing top plate 5 to reciprocate in the horizontal direction. In this embodiment, the pressing member 4 is a cylinder.

In the present embodiment, in the third step, the two plastic tubes 2 are aligned with a gap between the two plastic tubes 2, the metal heating sheet 3 is placed between the two plastic tubes 2, and the two plastic tubes 2 are compressed by the compressing device. In operation, the compressing component 4 drives the compressing top plate 5 to contact with the outer plastic pipe 2 and pushes the outer plastic pipe 2 towards the other plastic pipe 2 to compress, so that the metal heating plate 3 between the two plastic pipes 2 is clamped, and the next action is facilitated.

In another embodiment, in the third step, before the plastic pipe 2 is placed, the metal heating sheet 3 is bonded to one end of the plastic pipe 2, that is, the metal heating sheet 3 is bonded to one end of the plastic pipe 2 on the ground, so that the welding speed in the well is increased, the operation is more convenient, and after the plastic pipe 2 is placed, the metal heating sheet 3 is located between the two plastic pipes 2 and compresses the two plastic pipes 2 through the compressing device.

Specifically, in the third step, the metal heating plate 3 is electrified to melt the opposite end faces of the two plastic pipes 2, the electrifying time is t1, then the power is cut off, the two plastic pipes 2 are firmly bonded after the power is cut off and the stay time is t2, and the bonded plastic pipes 2 are pulled into the repaired pipeline through the pipe pulling device. The metal heating plate 3 is left between the two plastic tubes 2 and is bonded integrally therewith.

In the present embodiment, in the third step, the power-on time t1 is 3-150s, so that the bonding of the two plastic pipes 2 can be realized in a short time.

In the third step of this embodiment, in general, the retention time t2 is more than 5min after power failure, and at this time, the two plastic pipes are bonded firmly, so the pipe jacking is not performed by the pressing device. When the construction speed needs to be increased, the residence time can be reduced, the residence time t2 after power failure is set to be 0-5min, the pipe pulling device pulls the pipe and the pressing device pushes the pipe, and the thrust applied by the pressing device in the embodiment is below 200 kg, so that the plastic pipe 2 cannot be damaged.

Specifically, in the third step, two leads are arranged on the metal heating sheet 3, the hot-melt transformer 6 is used for connecting the two leads through the two heating wires 7 respectively to heat the metal heating sheet 3 in an electrified manner, the working voltage of the metal heating sheet 3 in the electrified state is a safe voltage below 36v, and no electric shock risk exists.

In the embodiment, the diameter of the lead is 1.5-20mm, each lead comprises 3-300 copper wires, the diameter of each copper wire is 0.1-1.5mm, so that the heat conductivity of the lead is better, and the length of the lead is more than 10 mm.

Specifically, in the third step, the butt joint part of the two plastic pipes 2 needing hot melting is rounded through a rounding device, so that the two plastic pipes 2 are aligned, and the pressing device is adopted to compress the round. Because the internal diameter of the plastic pipe in the market is not the standard perfect circle, so the stagger is easily caused during the butt joint, the butt joint part and the two sides of the two plastic pipes are propped open to be close to the standard perfect circle through the circle propping device in the embodiment, so that the stagger is reduced to the minimum, and the butt joint accuracy is improved.

In this embodiment, the end surface of the plastic tube 2 after rounding is circular, the metal heating plate 3 is circular, the outer diameter of the metal heating plate 3 is larger than the outer diameter of the plastic tube 2, the difference between the outer diameter of the metal heating plate 3 and the outer diameter of the plastic tube 2 is smaller than 9mm, the inner diameter of the metal heating plate 3 is smaller than the inner diameter of the plastic tube 2, and the difference between the inner diameter of the metal heating plate 3 and the inner diameter of the plastic tube 2 is smaller than 9 mm.

The pipe drawing device comprises a hydraulic power station 12, a hydraulic cylinder 8, a pull head 10 and a plurality of short rods 9, the hydraulic power station 12 is placed on the ground, the hydraulic cylinder 8 is placed at one end of a repaired pipeline, the hydraulic power station 12 is connected with the hydraulic cylinder 8 through two oil pipes 11, the piston rod of the hydraulic cylinder 8 is connected with the plurality of short rods 9, two adjacent short rods 9 can be detachably connected, the short rod 9 far away from the hydraulic cylinder 8 is connected with the pull head 10, the pull head 10 is used for connecting the plastic pipes 2, in the fourth step, the short rods 9 in the pipe drawing device are correspondingly disassembled along with the drawing of the plurality of plastic pipes 2. Specifically, when the piston rod of the hydraulic cylinder 8 retracts to a certain extent and pipe drawing cannot be performed, the short rods 9 in the middle are removed, the piston rod of the hydraulic cylinder 8 extends out to connect the two adjacent short rods 9 after the removal, and at the moment, the hydraulic cylinder 8 can continue pipe drawing.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.