KR102498097B1 - Waste heat recovery apparatus for non-excavating pipe repair - Google Patents

Abstract

A waste heat recovery apparatus for non-excavating pipeline repair according to the present invention comprises: a chamber having an inner space; a radiator installed in the chamber, and having a steam introduction pipe through which steam is supplied from the outside of the chamber and a steam discharge pipe which discharges the supplied steam to the outside of the chamber; a coolant spraying unit which is installed in the chamber to spray a coolant to the radiator; a steam generator which heats water to generate steam; and a drainage pipe and a transfer pump which are provided to transfer water pooled at the bottom of the chamber to the steam generator. Therefore, according to the waste heat recovery apparatus for non-excavating pipeline repair of the present invention, heat of the discharged steam may be recovered and used, thereby reducing the energy required by the steam generator. Furthermore, the temperature of the steam discharged into the air may be reduced, and condensed water is not discharged to the outside, thereby resolving civil complaints.

Description

Waste heat recovery apparatus for non-excavating pipe repair}

The present invention relates to a waste heat recovery device capable of recovering and using the heat of steam released into the atmosphere when a pipeline is repaired in a non-drilling method using an inverting tube, and more particularly, by recovering and using the heat of the released steam. It relates to a waste heat recovery device for non-drilling pipe repair that can reduce the temperature of steam discharged into the atmosphere while reducing the energy required for a steam generator.

In general, buried underground pipes such as water pipes, sewer pipes, gas pipes, and communication pipes are flooded with rainwater due to defects such as structural deterioration, subsidence of the underground ground, fluctuations in earth pressure on the ground, cracks and damages caused by external loads, or the like. Because wastewater seeps into the ground through cracks and damaged parts and contaminates the soil or causes ground erosion, maintenance of buried pipes is frequently required.

Recently, as a repair method for buried underground pipes, a non-drilling pipe repair device for repairing the pipe by inverting an inverted tube inside the pipe without excavating around the pipe is widely used. In general, non-drilling pipe repair equipment uses pneumatic pressure to bring the inverting tube into close contact with the inner wall of the pipe, and then heat-cures it by supplying high-temperature steam into the inverting tube. , CIPP). At this time, the inverting tube is impregnated with a resin therein, and the reinforcing layer is configured to adhere or adhere to the inner wall surface of the conduit while being cured by the impregnated resin.

Hereinafter, with reference to the accompanying drawings, a device for repairing a pipeline in a conventional non-drilling method will be described in detail.

1 is a state diagram of a conventional non-drilling pipe repair device in use.

The conventional non-drilling pipe repair device is an inverting tube 10 that expands after being inserted into the repair section of the pipe 1, and high-pressure air is supplied to the inside of the inverting tube 10 to repair the inverting tube 10. An inverter 20 for inverting, a steam generator 31 for generating steam by heating water, and the inside of the inverting tube 10 in close contact with the inner wall of the conduit 1 for steam provided from the steam generator 31 It is configured to include a steam hose 32 that is supplied to the space and thermally cured the inversion tube 10.

A portion of the inverting tube 10 in close contact with the inner wall surface of the conduit 1 is impregnated with resin so that it can be thermally cured by high-temperature steam sprayed from the steam hose 32 after being in close contact. That is, the inverting tube 10 includes a resin-impregnated portion 12 that is impregnated with resin and adhered to the inner wall of the conduit 1 and then cured, and is not impregnated with resin to form an inverter 20 and the conduit 1 It consists of a non-impregnated portion 11 disposed between them.

The high-temperature and high-humidity steam applied to the inside of the inverting tube 10 is discharged to the outside after the curing of the inverting tube 10 is completed. (36), it is configured to be released into the surrounding atmosphere as it is, and there is a disadvantage in that many civil complaints occur.

In addition, condensed water is generated in the process of curing the inverting tube, and the generated condensed water remains on the bottom surface of the inverting tube. Since the condensate accumulated on the bottom surface of the inverting tube serves to block heat, a phenomenon in which the adhesive resin layer of the inverting tube does not come into close contact with the inner wall surface of the pipe may occur. Therefore, when the condensate is collected on the bottom surface of the inverting tube, the condensate must be discharged to the outside. In this way, when the condensate is discharged to the outside, there is a problem in that many civil complaints also occur.

On the other hand, in order to continuously supply high-temperature and high-humidity steam to the inside of the inverting tube 10, the steam generator 31 must continuously boil water, so the operator must continuously supply water to the steam generator 31. discomfort arises.

KR 10-2093850 B1

The present invention has been proposed to solve the above problems, and by recovering and using the heat of the discharged steam, energy required for a steam generator can be reduced, the temperature of the steam discharged into the atmosphere can be lowered, and condensate discharge An object of the present invention is to provide a waste heat recovery device for non-drilling pipe repair that can solve the problem.

Waste heat recovery apparatus for repairing non-drilled pipelines according to the present invention for achieving the above object includes a chamber having an inner space; a radiator installed inside the chamber and having a steam inlet pipe through which steam is supplied from the outside of the chamber and a steam discharge pipe through which steam is discharged to the outside of the chamber; a coolant injection unit installed inside the chamber to inject coolant into the radiator; A steam generator that heats water to generate steam; It is configured to include; a drain pipe and a transfer pump for transferring water accumulated on the bottom of the chamber to the steam generator.

A cooling water tank supplying cooling water to the cooling water injection unit is further included.

It further includes a condensed water circulation pipe for transporting the condensed water accumulated at the bottom of the inversion tube into the inside of the chamber.

A condensed water circulation pipe for transferring the condensed water accumulated at the bottom of the inverting tube to the cooling water spray unit is further included.

The radiator has a condensate discharge pipe for discharging condensate generated inside to the bottom of the chamber.

The radiator is provided with a plurality of cooling fins for dissipating the heat of the steam supplied to the inside to the outside,

The cooling water spraying unit includes a plurality of spray nozzles to evenly spray the cooling water to all cooling fins.

A chamber having an inner space, a cooling water tank for supplying cooling water into the chamber, a steam inlet pipe installed inside the chamber to be submerged in the cooling water in the chamber and supplying steam from the outside of the chamber, and the supplied steam as described above. A radiator having a steam discharge pipe discharged to the outside of the chamber, a steam generator for generating steam by heating water, and a condensate discharge pipe installed in the steam discharge pipe for discharging condensate generated while steam passes through the radiator to the steam generator. It is configured to include a pipe, a drain pipe for transferring cooling water in the chamber to the steam generator, and a transfer pump.

Using the waste heat recovery device for repairing non-drilled pipelines according to the present invention, the energy required for the steam generator can be reduced by recovering and using the heat of the discharged steam, the temperature of the steam discharged into the atmosphere can be lowered, and the condensate water is not discharged to the outside, so it has the advantage of solving civil complaints.

1 is a state diagram of a conventional non-drilling pipe repair device in use.
2 is a schematic diagram of a waste heat recovery device for non-drilling pipeline repair according to the present invention.
3 is a schematic diagram of a second embodiment of a waste heat recovery device for non-drilling pipe repair according to the present invention.
4 is a schematic diagram of a third embodiment of a waste heat recovery device for repairing non-drilled pipelines according to the present invention.

Hereinafter, an embodiment of a waste heat recovery device for repairing a non-drilled pipeline according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram of a waste heat recovery device for non-drilling pipeline repair according to the present invention.

A waste heat recovery device for repairing a non-drilling pipeline according to the present invention relates to a device for recovering and reusing the heat of steam filled in an inverting tube when repairing a pipeline in a non-drilling method using an inverting tube, and more specifically, Energy required when the steam generator 500 generates steam by recovering the heat of the steam filled in the inversion tube and released into the air, and then using the recovered heat to heat the water supplied to the steam generator 500. The biggest feature is that it is configured to reduce

That is, the waste heat recovery device for repairing non-drilled pipelines according to the present invention has a chamber 100 having an internal space of a preset size, and is installed inside the chamber 100, but steam is supplied from the outside of the chamber 100. A radiator 200 having a supplied steam inlet pipe 210 and a steam discharge pipe 220 for discharging the supplied steam to the outside of the chamber 100, and the radiator 200 installed inside the chamber 100 A cooling water injection unit 300 for injecting cooling water into the furnace, a steam generator 500 for generating steam by heating water, and a drain pipe for transferring water accumulated at the bottom of the chamber 100 to the steam generator 500. (600) and a transfer pump (700).

The radiator 200 is a component for receiving the high-temperature steam filled in the inversion tube and discharging the steam heat to the outside, and is provided with a plurality of cooling fins 240 to maximize the heat transfer rate of the steam heat supplied to the inside. do. At this time, the cooling fins 240 may be formed over the entire body of the radiator 200 to more effectively discharge steam heat. Such cooling fins 240 are applied to various types of radiators, and the like A detailed description of the material and shape of the pin 240 will be omitted.

The coolant spray unit 300 is a component that sprays coolant to the radiator 200 so as to cool the surface of the radiator 200, so that the sprayed coolant descends and comes into contact with the radiator 200. It is located on the upper side of the 200, and it is preferable to have a plurality of spray nozzles 320 so that the cooling water can be evenly sprayed to all the cooling fins 240.

The steam generator 500 generates steam by heating water stored therein, and supplies the generated steam to the inside of the inversion tube through the steam hose 510. Since such a steam generator 500 is substantially equally applied to a conventional pipe repair device, a detailed description of the internal structure and operation principle of the steam generator 500 will be omitted.

In addition, the drain pipe 600 has one longitudinal end connected to the lower end of the side wall of the chamber 100 so as to transfer water accumulated at the bottom of the chamber 100 to the steam generator 500, and the other longitudinal end connected to the steam generator 500. ) is configured to be connected to. At this time, the transfer pump 700 is installed in the middle of the drain pipe 600, and serves to suck water collected on the bottom of the chamber 100 and transfer it to the steam generator 500.

When using the waste heat recovery device for repairing a non-drilling pipeline according to the present invention configured as described above, the high-temperature steam filled in the inverting tube is cooled while passing through the radiator 200 and then discharged into the atmosphere through the steam discharge pipe 220. As such, it has the advantage of being able to solve various civil complaints caused by the high temperature of the steam discharged into the atmosphere.

Meanwhile, steam passing through the inside of the radiator 200 undergoes a condensation process in which water vapor is liquefied as the temperature decreases, and a large amount of condensed water is generated inside the radiator 200 . In this way, when the inside of the radiator 200 is filled with condensate, steam cannot normally flow inside the radiator 200, so the radiator 200 discharges the condensate generated inside to the bottom of the chamber 100. A discharge tube 230 may be provided. At this time, the condensate discharge pipe 230 is preferably configured such that the upper end communicates with the bottom surface of the radiator 200 and the lower end extends downward.

In addition, the steam filled inside the inverting tube is also condensed to a certain level while the inverting tube is thermally cured, and condensate is generated. It is preferable to At this time, if the condensate accumulated at the bottom of the inverting tube is discharged to the outside, various civil complaints may occur due to the discharge of the condensate, so the condensed water accumulated at the bottom of the inverting tube is not discharged to the outside but is circulated into the chamber 100. this is preferable

To circulate the condensed water as described above, a condensed water circulation pipe 400 for transporting the condensed water accumulated at the bottom of the inversion tube to the inside of the chamber 100 may be mounted on a side wall of the chamber 100 . As shown in this embodiment, when the condensate circulation pipe 400 is mounted on the sidewall of the chamber 100, the condensate generated in the inverting tube is not discharged to the ground, thereby fundamentally reducing civil complaints due to condensate discharge. It has the advantage that it can be solved with

On the other hand, as shown in this embodiment, when the condensate discharge pipe 230 and the condensate circulation pipe 400 are provided, the radiator 200 as well as water falling after cooling the radiator 200 are provided at the bottom of the chamber 100. ) Since the condensed water discharged from the inside and the condensed water generated from the inside of the inverting tube are collected, a large amount of water is collected at the bottom of the chamber 100.

As such, a large amount of water collected at the bottom of the chamber 100 is transferred to the steam generator 500, heated again as high-temperature steam, and then provided to the inversion tube to be reused. The user fills the steam generator 500 with water. There is an advantage in that it is possible to continuously perform pipe repair using an inverting tube without having to do so.

In addition, when the steam is condensed while passing through the radiator 200, the steam discharged to the air through the steam discharge pipe 220 does not contain much moisture, so that a large amount of water vapor is not generated even when the steam is discharged into the air. will not In this way, if steam is not generated when steam is discharged, it is difficult to visually check whether or not steam is discharged, so that the occurrence of civil complaints due to steam discharge is significantly reduced.

3 is a schematic diagram of a second embodiment of a waste heat recovery device for non-drilling pipe repair according to the present invention.

In order to cool the radiator 200 by water-cooling, a cooling water spraying unit 300 for spraying cooling water to the radiator 200 is essentially required. As in the example, it may be configured to be provided from a separate coolant tank 310. However, when the water stored in the cooling water tank 310 is provided to the cooling water spray unit 300 as in the embodiment shown in FIG. 2, the cooling water spray continues for a long time and the water filled in the cooling water tank 310 is exhausted. There is an inconvenience that the user has to fill the cooling water tank 310 with water whenever it is available.

The waste heat recovery device for repairing non-drilled pipelines according to the present invention is configured so that the outlet end of the condensate circulation pipe 400 is connected to the cooling water spray unit 300 as shown in FIG. 3 to solve the above problems. It can be.

In this way, when the outlet end of the condensate circulation pipe 400 is connected to the coolant spray unit 300, the condensate accumulated at the bottom of the inverting tube is transferred to the coolant spray unit 300 through the condensate circulation pipe 400 to the radiator ( 200), there is an advantage in that the pipe repair using the inverting tube can be continuously performed even if the user does not replenish the cooling water.

That is, when using the waste heat recovery device for repairing the non-drilled pipeline shown in FIG. 3, the user does not need to fill the steam generator 500 with water or the cooling water tank 310 with water. It has the advantage of being able to perform pipe repair work using an inverted tube more quickly and efficiently.

In addition, compared to the embodiment shown in FIG. 2, since the configuration of the cooling water tank 310 is omitted, the internal configuration is simplified, and thus the manufacturing cost can be reduced.

4 is a schematic diagram of a third embodiment of a waste heat recovery device for repairing non-drilled pipelines according to the present invention.

The waste heat recovery device for repairing non-drilled pipelines according to the present invention may be configured such that the steam filled in the inversion tube is cooled by water cooling and then discharged to the outside.

That is, the waste heat recovery device for repairing non-drilled pipelines according to the present invention includes a chamber 100 having an inner space, a cooling water tank 310 supplying cooling water into the chamber 100, and the chamber 100 A steam inlet pipe 210 installed inside the chamber 100 to be submerged in the cooling water inside the chamber 100 and supplying steam from the outside of the chamber 100 and a steam discharge pipe 220 discharging the supplied steam to the outside of the chamber 100 A radiator 200 having a radiator 200, a steam generator 500 that heats water to generate steam, and is installed in the steam discharge pipe 220 to transfer condensed water generated while steam passes through the radiator 200 to the steam generator. It may be configured to include a condensate discharge pipe 230 for discharging the condensed water to 500, a drain pipe 600 for transferring the cooling water in the chamber 100 to the steam generator 500, and a transfer pump 700.

In this way, when the radiator 200 is installed to be submerged in the cooling water in the chamber 100, the entire cooling fins 240 provided in the radiator 200 contact the cooling water, compared to the embodiment shown in FIGS. 2 and 3 . Steam can cool quickly. Therefore, since the steam discharged through the steam discharge pipe 220 can be discharged after being cooled to a temperature close to room temperature, there is an advantage in that various civil complaints due to steam discharge do not occur.

In addition, the cooling water in the chamber 100 is heated to a high temperature by exchanging heat with steam through the radiator 200. When the waste heat recovery device for non-drilling pipe repair according to the present invention is used, the heated cooling water is transferred to the steam generator 500. Since the steam generator 500 can generate steam with a smaller heating amount, that is, it has the advantage of reducing the power required for steam generation.

On the other hand, when the radiator 200 is configured to be submerged in the cooling water in the chamber 100 as in the present embodiment, when the condensate discharge pipe 230 is installed in the radiator 200 inside the chamber 100, the inside of the radiator 200 Condensed water is not discharged to the outside of the radiator 200, and rather, the cooling water inside the chamber 100 flows backward into the radiator 200.

Therefore, the condensate discharge pipe 230 is installed in the steam discharge pipe 220 outside the chamber 100 as shown in FIG. this is preferable In this way, when the condensate discharge pipe 230 is installed in the steam discharge pipe 220, the condensate generated while passing through the radiator 200 is discharged to the steam generator 500 through the steam discharge pipe 220, the radiator 200 The inflow of coolant into the interior is prevented.

At this time, a separate condensate pump 232 may be provided at a stop of the condensate discharge pipe 230 so that the condensate in the condensate discharge pipe 230 can be more quickly and reliably transferred to the steam generator 500.

In the above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted according to the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

100: chamber 200: radiator
210: steam inlet pipe 220: steam discharge pipe
230: condensate discharge pipe 240: cooling fin
300: cooling water injection unit 310: cooling water tank
320: injection nozzle 400: condensate circulation pipe
500: steam generator 510: steam hose
600: drain pipe 700: transfer pump

Claims (7)

A chamber having an inner space;
a cooling water tank supplying cooling water into the chamber;
a radiator installed inside the chamber to be submerged in the cooling water in the chamber, and having a steam inlet pipe through which steam is supplied from the outside of the chamber and a steam discharge pipe through which steam is discharged to the outside of the chamber;
A steam generator that heats water to generate steam;
a condensate discharge pipe installed in the steam discharge pipe to discharge condensate generated while steam passes through the radiator to the steam generator; and
A drain pipe and a transfer pump for transferring the cooling water in the chamber to the steam generator. delete delete delete delete The method of claim 1,
The radiator is a waste heat recovery device for non-drilling pipe repair, characterized in that it has a plurality of cooling fins for discharging the heat of the steam supplied to the inside to the outside. delete

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