Pipeline protecting and repairing device suitable for soft geological conditions and construction method thereof

Abstract

The invention discloses a pipeline protecting and repairing device suitable for soft geological conditions and a construction method thereof, and relates to the technical field of foundation reinforcement. The pipeline protecting and repairing device suitable for the soft geological conditions is characterized by comprising air compression equipment, a finished product vortex tube, a refrigeration tube, a heat dissipation tube, an exhaust tube, a one-way valve, a valve, a water collection tank, a floral tube, geotechnical cloth and crushed gravels. The device can be installed according to the paragraph length selected on site. According to the pipeline protecting and repairing device suitable for the weak geological conditions and the construction method of the pipeline protecting and repairing device, the vortex tube freezing device is arranged, soil around a current pipeline is frozen and used for stabilizing the soil around the current pipeline, and the purposes of protecting the current pipeline, reducing the possibility of river pollution and protecting the environment are achieved; soil around the current pipeline is frozen, and the current pipeline can be guaranteed not to be affected when a blind ditch groove is excavated.

Description

Technical Field

[0001] This invention relates to the field of foundation reinforcement technology, specifically to a pipeline protection and repair device and its construction method suitable for weak geological conditions. Background Technology

[0002] The existing methods are to use rigid materials to encase the pipe to resist deformation, or to use flexible materials to backfill to reduce soil deformation. These two methods are not very effective for treating pipes that have been soaked in water for a long time. They often require a lot of materials to produce an effect, which is not economical and has a long construction period. Construction is not possible during the rainy season.

[0003] This invention is mainly applied to the protection of existing pipelines and the treatment of soft soil foundations at riverbank slopes. Since there are multiple pipelines near the riverbank slopes, slope seepage and poor soil conditions can have varying degrees of impact on the pipelines, causing pipeline damage or pollution of the river by substances inside the pipelines. Especially during seasons with high rainfall, repair is difficult and costly, and the pipelines are still prone to damage after repair. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a pipeline protection and repair device and its construction method suitable for weak geological conditions, thus solving the problems existing in the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pipeline protection and repair device suitable for soft geological conditions, comprising: an air compressor, a pre-fabricated vortex tube, a refrigeration pipe, a heat dissipation pipe, an exhaust pipe, a one-way valve, a valve, a water collection trough, a perforated pipe, geotextile, and gravel. This device can be installed according to the selected section length on site.

[0008] The compressed air equipment can be replaced with a brushless motor air supply device depending on the actual effect on site, using clean energy to protect the environment. The vortex tube device includes one air inlet and two air outlets. The inner wall of the air inlet pipe has a spiral texture, and the air inlet is connected to the main air inlet pipe. Of the two air outlets, the longer pipe is the hot air outlet, and the shorter pipe is the cold air outlet. The hot air outlet is connected to a heat dissipation fin to protect the pipe from high-temperature damage. The heat dissipation fin is connected to a bend to discharge gas, liquid, or other debris from the pipe. A one-way valve is installed at the outlet end of the bend to prevent foreign objects from entering and causing blockage. The cold air outlet is connected to a condensation pipe. The condensation pipe is used to bury near the existing pipe to freeze the soil near the pipe. One end of the condensation pipe is connected to the vortex tube, and the other end passes through the existing pipe that needs protection, exits the ground, and connects to the bend to discharge gas, liquid, or other debris from the pipe. A one-way valve is installed at the outlet end of the bend to prevent foreign objects from entering and causing blockage. A water collection tank is installed on the ground at the outlet of the bend to collect the liquid or debris discharged from the bend.

[0009] The blind drain is set between the river channel and the existing pipeline and vortex tube freezing device. Excavation begins after the vortex tube freezing device achieves a certain effect, and the burial depth is lower than that of the existing pipeline. The blind drain uses PVC perforated pipes to collect groundwater. The perforated pipes are surrounded by large-diameter gravel for backfilling. One-way permeable geotextile is installed on the top of the perforated pipes. Medium and coarse sand is used for backfilling on the geotextile.

[0010] A construction method for a pipeline protection and repair device suitable for weak geological conditions, comprising the aforementioned pipeline protection and repair device suitable for weak geological conditions, is as follows:

[0011] S1. Investigate the locations of pipelines that need protection on site, and select the sections of pipelines that need protection based on the seepage situation of the riverbank slope.

[0012] S2. Install a vortex tube refrigeration unit near the protected pipeline;

[0013] S3. Operate the vortex tube refrigeration unit;

[0014] S4. After the soil is frozen, a trench is excavated between the pipeline and the riverbank slope, a blind drain is laid and backfilled with crushed stone (the diameter of the blind drain is selected according to the drainage volume on site).

[0015] S5. Remove the air compressor, but retain the vortex tube. When there is heavy rain, connect the air compressor and the soil around the refrigeration pipe to reduce the extent of disturbance to the pipe.

[0016] (III) Beneficial Effects

[0017] This invention provides a pipeline protection and repair device and its construction method suitable for weak geological conditions. It has the following beneficial effects:

[0018] This invention relates to a pipeline protection and repair device and its construction method applicable to weak geological conditions. By setting up a vortex tube freezing device, the soil around the existing pipeline is frozen to stabilize the soil around the existing pipeline, thereby achieving the purpose of protecting the existing pipeline, reducing the possibility of river pollution, and protecting the environment.

[0019] By installing a vortex tube freezing device to freeze the soil around the existing pipeline, the existing pipeline can be kept unaffected when excavating blind trenches.

[0020] The application of the method of this invention utilizes a vortex tube freezing device in conjunction with a blind ditch to fully solve the problem of existing pipelines on riverbank slopes being affected by river seepage, rainwater, and uneven settlement of soft soil. This reduces the possibility of disturbance to existing pipelines, protects them from damage, and reduces the inflow of pollutants from the pipelines into the river, thus preventing river pollution. Furthermore, the device and method can be used for a long time, have relatively low costs, and offer high economic benefits. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] In the diagram: 1. Bend; 2. Heat sink; 3. Vortex tube; 4. Condenser tube; 5. Existing pipe; 6. Air inlet pipe; 7. Bend; 8. Water collection tank; 9. Valve; 10. Air compressor; 11. Medium and coarse sand; 12. One-way permeable geotextile; 13. Perforated pipe; 14. Large-diameter gravel. Detailed Implementation

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Please see Figure 1 This invention provides a technical solution: a pipeline protection and repair device suitable for soft geological conditions, comprising: air compressor equipment, prefabricated vortex tube, refrigeration pipe, heat dissipation pipe, exhaust pipe, one-way valve, valve, water collection tank, perforated pipe, geotextile, and gravel. This device can be installed according to the selected section length on site.

[0025] The compressed air equipment can be replaced with a brushless motor air supply device depending on the actual effect on site, using clean energy to protect the environment. The vortex tube device includes one air inlet and two air outlets. The inner wall of the air inlet pipe has a spiral texture, and the air inlet is connected to the main air inlet pipe. Of the two air outlets, the longer pipe is the hot air outlet, and the shorter pipe is the cold air outlet. The hot air outlet is connected to a heat dissipation fin to protect the pipe from high-temperature damage. The heat dissipation fin is connected to a bend to discharge gas, liquid, or other debris from the pipe. A one-way valve is installed at the outlet end of the bend to prevent foreign objects from entering and causing blockage. The cold air outlet is connected to a condensation pipe. The condensation pipe is used to bury near the existing pipe to freeze the soil near the pipe. One end of the condensation pipe is connected to the vortex tube, and the other end passes through the existing pipe that needs protection, exits the ground, and connects to the bend to discharge gas, liquid, or other debris from the pipe. A one-way valve is installed at the outlet end of the bend to prevent foreign objects from entering and causing blockage. A water collection tank is installed on the ground at the outlet of the bend to collect the liquid or debris discharged from the bend.

[0026] The blind drain is set between the river channel and the existing pipeline and vortex tube freezing device. Excavation begins after the vortex tube freezing device achieves a certain effect, and the burial depth is lower than that of the existing pipeline. The blind drain uses PVC perforated pipes to collect groundwater. The perforated pipes are surrounded by large-diameter gravel for backfilling. One-way permeable geotextile is installed on the top of the perforated pipes. Medium and coarse sand is used for backfilling on the geotextile.

[0027] A construction method for a pipeline protection and repair device suitable for weak geological conditions, comprising the aforementioned pipeline protection and repair device suitable for weak geological conditions, is as follows:

[0028] S1. Investigate the locations of pipelines that need protection on site, and select the sections of pipelines that need protection based on the seepage situation of the riverbank slope.

[0029] S2. Install a vortex tube refrigeration unit near the protected pipeline;

[0030] S3. Operate the vortex tube refrigeration unit;

[0031] S4. After the soil is frozen, a trench is excavated between the pipeline and the riverbank slope, a blind drain is laid and backfilled with crushed stone (the diameter of the blind drain is selected according to the drainage volume on site).

[0032] S5. Remove the air compressor, but retain the vortex tube. When there is heavy rain, connect the air compressor and the soil around the refrigeration pipe to reduce the extent of disturbance to the pipe.

[0033] In summary, this pipeline protection and repair device and its construction method, applicable to weak geological conditions, uses a vortex tube freezing device to freeze the soil around the existing pipeline, thereby stabilizing the soil around the existing pipeline, achieving the purpose of protecting the existing pipeline, reducing the possibility of river pollution, and protecting the environment.

[0034] By installing a vortex tube freezing device to freeze the soil around the existing pipeline, the existing pipeline can be kept unaffected when excavating blind trenches.

[0035] The application of the method of this invention utilizes a vortex tube freezing device in conjunction with a blind ditch to fully solve the problem of existing pipelines on riverbank slopes being affected by river seepage, rainwater, and uneven settlement of soft soil. This reduces the possibility of disturbance to existing pipelines, protects them from damage, and reduces the inflow of pollutants from the pipelines into the river, thus preventing river pollution. Furthermore, the device and method can be used for a long time, have relatively low costs, and offer high economic benefits.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline protection and repair device suitable for weak geological conditions, characterized by: include: Air compressor equipment, finished vortex tubes, refrigeration tubes, heat dissipation tubes, exhaust pipes, one-way valves, valves, water collection tanks, flower tubes, geotextiles, crushed gravel. The device can be installed according to the section length selected on site. The air compressor equipment can be replaced with a brushless motor air supply device depending on the actual on-site effect, using clean energy to protect the environment. The vortex tube device includes an air inlet and two air outlets; the inner wall of the air inlet tube is provided with a spiral texture, and the air inlet is connected to the air inlet main pipe; the two air outlets, the longer pipe is the hot air outlet, and the shorter pipe is the cold air outlet; the hot air outlet is connected to a heat dissipation pipe sheet for protecting the pipeline to prevent damage by high temperature; the heat dissipation pipe sheet is connected to a bend pipe to discharge gas, liquid or other debris in the pipeline; a one-way valve is provided at the outlet of the bend end to prevent foreign matter from entering through the bend and causing blockage; the cold air outlet is connected to a condensation pipe; the condensation pipe is used to be buried near the existing pipeline and used to freeze the soil near the pipeline; one end of the condensation pipe is connected to the vortex tube, and the other end passes through the existing pipeline that needs to be protected and then goes out of the ground and connects to the bend pipe, gas, liquid or other debris in the pipeline; a one-way valve is provided at the outlet of the bend end to prevent foreign matter from entering through the bend and causing blockage; a water collection tank is provided on the ground at the outlet of the bend pipe to collect liquid or debris discharged from the bend pipe. The blind ditch is set between the river channel and the existing pipeline and the vortex tube refrigeration device. The excavation starts after the vortex tube refrigeration device achieves a certain effect, and the burial depth is lower than the existing pipeline. The blind ditch uses PVC flower pipes to collect groundwater; the flower pipes are surrounded by large-diameter gravel for backfilling; the top of the flower pipes is provided with a one-way permeable geotextile; the geotextile is backfilled with medium-coarse sand.

2. A construction method for a pipeline protection and repair device suitable for weak geological conditions, characterized in that: The pipeline protection and repair device applicable to soft geological conditions as claimed in claim 1 is specifically operated as follows: S1. Investigate the location of pipelines that need to be protected on site, and select the sections that need pipeline protection based on the water seepage situation of the river slope; S2. Install a vortex tube refrigeration device near the protected pipeline; S3, operating the vortex tube refrigeration device; S4. After the soil is frozen, dig a trench between the pipeline and the river slope, bury a blind ditch and backfill with crushed stone (the diameter of the blind ditch is selected according to the drainage volume on site); S5. Remove the air compressor and keep the vortex tube. When it rains heavily, connect the air compressor to freeze the soil around the pipeline to reduce the disturbance of the pipeline.

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