A buried pipe construction device

Abstract

This invention relates to a buried pipe construction device, comprising: a casing, a drilling mechanism, and a guiding mechanism; the casing has 2n buried pipe channels and at least one slurry channel within its wall; the top of each slurry channel is connected to a mud pump or a grouting pump; the drilling mechanism includes a drill bit and a drill shaft, the length of which is greater than the length of the casing; the drill bit contains multiple cutting teeth, and the tip circle of the drill bit is the same as the outer diameter of the casing; the guiding mechanism is located at one end of the buried pipe and is used to guide the buried pipe along one of the buried pipe channels into the hole drilled by the drilling mechanism after drilling is completed, and after reaching the bottom, return to the top of the casing along the corresponding other buried pipe channel. This invention integrates the three traditionally separate processes of drilling, pipe laying, and backfilling into a single construction process, which can significantly shorten the construction time of buried pipes, reduce construction difficulty, ensure the construction quality of buried pipe heat exchangers, and improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of construction technology for buried pipe ground source heat pump projects, specifically to a buried pipe construction device. Background Technology

[0002] A ground source heat pump is a highly efficient, energy-saving, and environmentally friendly air conditioning system that utilizes shallow geothermal resources for both heating and cooling. By inputting a small amount of high-grade energy (electricity), the system transfers energy from a low-temperature heat source to a high-temperature heat source. In winter, heat is extracted from the soil and rock, heated by the heat pump unit, and then supplied to the room for heating. In summer, heat is extracted from the room and released back into the soil and rock. As an important form of renewable energy utilization, ground source heat pump systems are widely used in the HVAC field. However, their widespread adoption is somewhat limited due to the complex construction process. This is mainly because the construction involves numerous steps, takes a long time, and is costly. Furthermore, the buried pipe heat exchangers are prone to damage during construction, ultimately compromising the air conditioning performance. Traditional construction methods involve drilling, pipe laying, and backfilling separately. In particular, the pipe laying stage often results in heat exchanger pipe damage and leaks, which are irreparable once backfilled, affecting project quality and compromising the overall air conditioning system's effectiveness. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a buried pipe construction device. Based on this device, which is supplemented by a mud pump and a grouting pump, the three traditionally separate processes of drilling, pipe laying, and backfilling are integrated into a single construction process. This can significantly shorten the construction time of buried pipes, reduce the construction difficulty, ensure the construction quality of buried pipe heat exchangers, improve work efficiency, and reduce the engineering cost of buried pipe systems.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] A buried pipe construction device includes: a casing, a drilling mechanism, and a guiding mechanism;

[0006] The casing has 2n buried pipe channels and at least one grout channel inside its wall, where n is a positive integer greater than or equal to 1; the axial directions of the buried pipe channels and the grout channel are parallel to the axial direction of the casing; the top of the grout channel is connected to a mud pump or a grouting pump for extracting mud from the borehole or backfilling material into the borehole.

[0007] The drilling mechanism includes a drill bit and a drill shaft. The drill shaft is coaxially arranged with the casing and its length is greater than that of the casing, so that the drill bit is located outside the casing. The drill bit includes multiple cutting teeth, and the tip circle of the drill bit is the same as the outer diameter of the casing.

[0008] The guiding mechanism is located at one end of the buried pipe and is used to guide the buried pipe into the borehole drilled by the drilling mechanism along one of the buried pipe channels after drilling is completed. After reaching the bottom, it returns to the top of the casing along the corresponding other buried pipe channel.

[0009] Furthermore, when the slurry channels include multiple channels, at least one of them is a suction channel and the rest are reinjection channels, or at least one is a reinjection channel and the rest are suction channels; the top end of the suction channel is connected to the mud pump, and the top end of the reinjection channel is connected to the grouting pump.

[0010] Furthermore, at the start and end of drilling, the projection of the cutting blade teeth and the buried pipe channel along the axial direction of the casing does not overlap.

[0011] Furthermore, the gap between the sleeve and the drill shaft is used to inject cooling water into the hole drilled by the drilling mechanism during drilling.

[0012] Furthermore, the inner wall of the buried pipe channel is provided with multiple guide pulleys to facilitate the sliding of the buried pipe in the buried pipe channel.

[0013] Furthermore, the guiding mechanism is a tubular structure. The end of the guiding mechanism connected to the underground pipe is referred to as the tail of the guiding mechanism, and the end away from the underground pipe is referred to as the head of the guiding mechanism. The head and tail of the guiding mechanism are connected by a corrugated pipe.

[0014] The guiding mechanism is equipped with a power module, a walking mechanism, a steering mechanism, and a camera navigation module;

[0015] The power module is located at the tail of the guide mechanism and supplies power to the walking mechanism, steering mechanism, and camera navigation module;

[0016] The walking mechanism includes a drive motor and two sets of drive wheels driven by the drive motor. The two sets of drive wheels are respectively located at the head and tail of the guide mechanism, and each set of drive wheels includes multiple drive wheels, which are arranged along the circumference of the walking mechanism.

[0017] The steering mechanism is disposed inside the bellows and includes a steering drive device and a steering control device for adjusting the orientation of the head of the guide mechanism.

[0018] The camera navigation module is located at the head of the guide mechanism and is used for camera and navigation at the bottom of the channel.

[0019] Furthermore, the camera navigation module includes a camera, a navigation module, a microcontroller, and a communication module;

[0020] The navigation module positions the head of the guide mechanism according to a relative coordinate system, which is a cylindrical coordinate system constructed with the drill axis of the drilling mechanism as the Z-axis and the center of the drill bit of the drilling mechanism as the origin.

[0021] The microcontroller communicates with the ground equipment through the communication module and sends steering commands to the steering control device of the steering mechanism.

[0022] The beneficial effects of this invention are: it integrates the three processes of drilling, pipe laying, and backfilling in traditional underground pipe construction into one continuous process. Furthermore, it allows the underground pipe heat exchanger to operate without any joints. This construction machinery and the adopted process can significantly reduce the difficulty of pipe laying construction and shorten the construction period, eliminate the risk of water leakage in underground pipes, and ensure the construction quality of underground pipes. Attached Figure Description

[0023] Figure 1 A three-dimensional schematic diagram of an underground pipe construction device provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the top cross-section of the sleeve provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the bottom cross-section of the sleeve provided in an embodiment of the present invention;

[0026] Figure 4 A side view of a single buried pipe heat exchanger (PE pipe) provided in an embodiment of the present invention;

[0027] Figure 5 for Figure 2 Schematic diagram of the AA section;

[0028] Figure 6 for Figure 2 Schematic diagram of the BB cross section;

[0029] Figure 7 This is a schematic diagram of the cross-sectional view of the buried pipe hole after backfilling, provided in an embodiment of the present invention.

[0030] Figure 8-9 This is a schematic diagram of a cylindrical coordinate system provided in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the guiding device structure provided in an embodiment of the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Sleeve,

[0034] 11. Pipe channel; 12. Grout channel; 13. Guide pulley;

[0035] 2. Drilling mechanism,

[0036] 21. Drill bit; 22. Drill spindle; 23. Cutting blade teeth;

[0037] 3. Guiding mechanism,

[0038] 31. Bellows; 32. Power supply module; 33. Walking mechanism; 34. Camera navigation module;

[0039] 4. Buried pipes. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0043] like Figure 1-10 As shown, this embodiment of the invention provides a buried pipe construction device, including: a casing 1, a drilling mechanism 2, and a guiding mechanism 3, as described above. Figure 1 As shown.

[0044] like Figure 2-3As shown, the casing 1 is a steel casing, with 2n buried pipe channels 11 and at least one slurry channel 12 arranged inside its pipe wall, where n is a positive integer greater than or equal to 1. In this embodiment, the number of buried pipe channels is 4 and the number of slurry channels is 4. The axial directions of the buried pipe channels and the slurry channels are arranged parallel to the axial direction of the casing, and the buried pipe channels and the slurry channels are arranged alternately.

[0045] The top of the slurry channel is connected to a mud pump or a grouting pump, which is used to extract mud from the borehole drilled by the drilling mechanism or to backfill material into the borehole drilled by the drilling mechanism.

[0046] The drilling mechanism includes a drill bit 21 and a drill shaft 22. The drill shaft 22 is coaxially arranged with the casing 1 and its length is greater than that of the casing 1, so that the drill bit 21 is located outside the casing 1. The drill bit 21 includes a plurality of cutting teeth 23, and the tooth tip circle of the drill bit 21 is the same as the outer diameter of the casing 1.

[0047] The guiding mechanism 3 is located at one end of the buried pipe 4, such as Figure 4 As shown, after drilling is completed, the buried pipe is pulled into the borehole drilled by the drilling mechanism along one of the buried pipe channels, and after reaching the bottom, it returns to the top of the casing along the corresponding other buried pipe channel.

[0048] Furthermore, when the slurry channels include multiple channels, at least one is a suction channel and the rest are reinjection channels, or at least one is a reinjection channel and the rest are suction channels; the top of the suction channel is connected to a mud pump, and the top of the reinjection channel is connected to a grouting pump. It should be understood that if there is only one slurry channel, suction and reinjection are achieved by changing the mud pump or grouting pump connected to its top. However, when there are multiple slurry channels, it is not necessary to change the top connection equipment; one or more slurry channels can be designated as suction channels, and the remaining slurry channels as reinjection channels, thereby achieving suction and reinjection.

[0049] Furthermore, at the start and end of drilling, the projections of the cutting blade teeth and the buried pipe channel along the axial direction of the casing do not overlap, such as... Figure 3 As shown.

[0050] Furthermore, the gap between the sleeve and the drill shaft is used to inject cooling water into the hole drilled by the drilling mechanism during drilling.

[0051] Furthermore, the inner wall of the buried pipe channel is provided with multiple guide pulleys 13 to facilitate the sliding of the buried pipe in the buried pipe channel.

[0052] Furthermore, the guiding mechanism 3 is a tubular structure, such as... Figure 10As shown, the end of the guide mechanism connected to the underground pipe is referred to as the tail of the guide mechanism, and the end away from the underground pipe is referred to as the head of the guide mechanism. The head and tail of the guide mechanism are connected by a corrugated pipe 31.

[0053] The guide mechanism 3 is equipped with a power module 32, a walking mechanism 33, a steering mechanism, and a camera navigation module 34.

[0054] The power module is located at the tail of the guide mechanism and supplies power to the walking mechanism, steering mechanism, and camera navigation module;

[0055] The walking mechanism includes a drive motor and two sets of drive wheels driven by the drive motor. The two sets of drive wheels are respectively located at the head and tail of the guide mechanism, and each set of drive wheels includes multiple drive wheels, which are arranged along the circumference of the walking mechanism.

[0056] The steering mechanism is disposed inside the bellows and includes a steering drive device and a steering control device for adjusting the orientation of the head of the guide mechanism.

[0057] The camera navigation module is located at the head of the guide mechanism and is used for camera and navigation at the bottom of the channel.

[0058] Furthermore, the camera navigation module includes a camera, a navigation module, a microcontroller, and a communication module.

[0059] The navigation module positions the guide mechanism head according to a relative coordinate system. This relative coordinate system is a cylindrical coordinate system constructed with the drill axis of the drilling mechanism as the Z-axis and the center of the drill bit of the drilling mechanism as the origin, such as... Figure 8-9 As shown, the coordinates of any point are expressed as (r, θ, z), where r is the distance from the point to the center line of the steel casing in meters; θ is the angle between the point and the horizontal line in degrees; and z is the vertical distance from the point to the center point O of the top section of the steel casing in meters.

[0060] The microcontroller communicates with the ground equipment through the communication module and sends steering commands to the steering control device of the steering mechanism.

[0061] During the construction of underground pipes, a casing and a drilling mechanism work together to drill a hole at the construction location. Simultaneously, cooling water is injected into the borehole through the gap between the casing and the drill shaft to cool the drill bit. At the same time, a mud pump connected to the top of the suction channel starts working, sucking out mud, sand, and other debris from the borehole. Figure 5As shown, the drilling mechanism stops working when the borehole reaches the designated position. After the mud pump has sucked out all the mud and gravel from the borehole, the buried pipe is inserted into one of the buried pipe channels. Since the drill bit's cutting teeth do not overlap with the projection of the buried pipe channel along the casing axis when the drilling mechanism stops working, the buried pipe can directly reach the bottom of the borehole. The ground operator communicates with the guiding mechanism through the ground equipment to control the walking mechanism 33 and the steering mechanism in the guiding mechanism. Based on the bottom image of the borehole and the relative coordinate information uploaded by the camera navigation module, the position of the guiding mechanism is determined, and the buried pipe is guided to pass through the designated buried pipe channel, as shown in Figure 6. Since the buried pipe is generally made of PE pipe, which has a certain axial strength, a force can be applied to the tail end of the buried pipe to push it to move in the buried pipe channel. After the buried pipe passes through the designated buried pipe channel, the grouting pump on the ground injects backfill material into the borehole through the backfill channel, and the casing and drilling mechanism are removed simultaneously. Once the casing and drilling equipment have been completely removed and backfilling is finished, the entire pipe laying project is complete. Figure 7 As shown.

[0062] By integrating drilling, pipe laying, and backfilling—three traditionally separate processes—into a single construction method using a construction machine supplemented by a mud pump and a grouting pump, the construction time for underground pipes can be significantly shortened, the construction difficulty reduced, the construction quality of underground pipe heat exchangers guaranteed, work efficiency improved, and the cost of underground pipe systems reduced.

[0063] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0064] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A buried pipe construction device, characterized in that, include: Casing, drilling mechanism, guiding mechanism; The casing has 2n buried pipe channels and at least one grout channel inside its wall, where n is a positive integer greater than or equal to 1; the axial directions of the buried pipe channels and the grout channel are parallel to the axial direction of the casing; the top of the grout channel is connected to a mud pump or a grouting pump for extracting mud from the borehole or backfilling material into the borehole; when there are multiple grout channels, at least one is a suction channel and the rest are refill channels, or at least one is a refill channel and the rest are suction channels; the top of the suction channel is connected to the mud pump, and the top of the refill channel is connected to the grouting pump. The drilling mechanism includes a drill bit and a drill shaft. The drill shaft is coaxially arranged with the casing and its length is greater than that of the casing, so that the drill bit is located outside the casing. The drill bit includes multiple cutting teeth, and the tip circle of the drill bit is the same as the outer diameter of the casing. The guiding mechanism is located at one end of the buried pipe and is used to pull the buried pipe along one of the buried pipe channels into the hole drilled by the drilling mechanism after drilling is completed. After reaching the bottom, it returns to the top of the casing along the corresponding other buried pipe channel. The guiding mechanism is a tubular structure. The end of the guiding mechanism connected to the underground pipe is referred to as the tail of the guiding mechanism, and the end away from the underground pipe is referred to as the head of the guiding mechanism. The head and tail of the guiding mechanism are connected by a corrugated pipe. The guiding mechanism is equipped with a power module, a walking mechanism, a steering mechanism, and a camera navigation module; The power module is located at the tail of the guide mechanism and supplies power to the walking mechanism, steering mechanism, and camera navigation module; The walking mechanism includes a drive motor and two sets of drive wheels driven by the drive motor. The two sets of drive wheels are respectively located at the head and tail of the guide mechanism, and each set of drive wheels includes multiple drive wheels, which are arranged along the circumference of the walking mechanism. The steering mechanism is disposed inside the bellows and includes a steering drive device and a steering control device for adjusting the orientation of the head of the guide mechanism. The camera navigation module is located at the head of the guide mechanism and is used for camera and navigation at the bottom of the channel.

2. The trench pipe construction apparatus according to claim 1, wherein At the start and end of drilling, the projection of the cutting blade teeth and the buried pipe channel along the axial direction of the casing does not overlap.

3. The trench pipe installation apparatus according to claim 1, wherein The gap between the casing and the drill shaft is used to inject cooling water into the hole drilled by the drilling mechanism during drilling.

4. The trench pipe installation apparatus according to claim 1, wherein The inner wall of the buried pipe channel is provided with multiple guide pulleys to facilitate the sliding of the buried pipe in the buried pipe channel.

5. The underground pipe construction device according to claim 1, characterized in that, The camera navigation module includes a camera, a navigation module, a microcontroller, and a communication module; The navigation module positions the head of the guide mechanism according to a relative coordinate system, which is a cylindrical coordinate system constructed with the drill axis of the drilling mechanism as the Z-axis and the center of the drill bit of the drilling mechanism as the origin. The microcontroller communicates with the ground equipment through the communication module and sends steering commands to the steering control device of the steering mechanism.

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