A hydrodynamic ground source heat exchange buried pipe device and its use method

Abstract

The present invention provides a hydrodynamic ground source heat exchange buried pipe device, comprising: a mounting shell, the top of which is connected to a connector; a main pipe, one end of which is connected to the connector; a soil drilling mechanism, the soil drilling mechanism comprising a rotating pipe, a transmission gear, a drill bit, and a water spray hole, one end of the rotating pipe being connected to one end of the main pipe via a rotating connector, the other end of the rotating pipe passing through the bottom of the mounting shell and connected to the drill bit, a plurality of water spray holes being provided on the drill bit, and the transmission gear being fixedly mounted on the rotating pipe. The hydrodynamic ground source heat exchange buried pipe device provided by the present invention and its use method, by providing a drill bit in conjunction with a driving mechanism, drives the drill bit to rotate and drill holes in the soil, and the diameter of the upper end of the drill bit is greater than the diagonal length of the cross section of the mounting shell, so that the entire device is easier to follow the drill bit downward, and at the same time, two excavation mechanisms facilitate the upward discharge of the drilled soil to pre-bury the heat exchange pipe.

Description

Technical Field

[0001] The present invention relates to the field of ground source heat pump air conditioner installation, and in particular to a hydrodynamic ground source heat exchange buried pipe device and a use method thereof. Background Art

[0002] The development of clean new energy plays a vital role in solving energy shortages and environmental governance problems. Shallow geothermal energy is a clean energy with abundant reserves. The shallow surface temperature is basically constant all year round and is very close to the comfortable temperature required for building rooms. Geothermal energy can be used to meet the cooling and heating needs of buildings through heat pump technology. Ground source heat pump air conditioners have outstanding energy-saving properties in all aspects of cooling and heating, and have broad development prospects.

[0003] During the system application of ground-source heat pump air conditioning, the way the unit exchanges heat with the earth's soil is usually to bury a closed plastic pipe deep underground, fill the plastic pipe with water or antifreeze medium, and connect it to the heat pump unit in a closed loop. The medium circulates in a closed loop to exchange heat with the earth.

[0004] At present, the heat exchange tube landfill equipment driven by water power excavates the soil by rotating two earth-breaking wheels to both sides. Since the front and rear sides of the cross-section of the entire installation shell are larger than the area covered by the two earth-breaking wheels, the downward movement of the entire device is greatly hindered and the soil is not easy to move upward.

[0005] Therefore, it is necessary to provide a hydrodynamic ground source heat exchange buried pipe device and a method of using the same to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a hydrodynamic ground source heat exchange buried pipe device and a method for using the same, which solves the problem that the front and rear sides of the cross-section of the entire installation shell of the hydrodynamic ground source heat exchange buried pipe device are larger than the area covered by two broken soils, thereby greatly hindering the downward movement of the entire device and making it difficult for the soil to move upward.

[0007] In order to solve the above technical problems, the present invention provides a hydrodynamic ground source heat exchange buried pipe device, comprising:

[0008] A mounting shell, wherein a connector is connected to the top of the mounting shell;

[0009] a main pipe, one end of which is connected to the connector;

[0010] A soil drilling mechanism, comprising a rotating tube, a transmission gear, a drill bit, and a water spray hole. One end of the rotating tube is connected to one end of the main pipe via a rotating connector, and the other end of the rotating tube passes through the bottom of the mounting shell and is connected to the drill bit. The drill bit is provided with a plurality of water spray holes. The transmission gear is fixedly mounted on the rotating tube, and one side of the driving impeller extends into the interior of the main pipe.

[0011] The diameter of the upper end of the drill bit is greater than the diagonal length of the cross section of the mounting shell;

[0012] Two driving mechanisms, each comprising a mounting box, a rotating shaft, a driving impeller, and a driving bevel gear. The mounting box is mounted on the main pipe, the driving impeller is rotatably connected to the interior of the mounting box via the rotating shaft, and the driving bevel gear is fixed to one end of the rotating shaft and located outside the mounting box.

[0013] The driving bevel gear is connected to the transmission gear through a transmission mechanism.

[0014] Preferably, the driving impeller is fixed to the surface of the rotating shaft, the rotating shaft is rotatably connected to the inside of the installation box, and both ends of the rotating shaft pass through the installation box and extend to the outside of the installation box.

[0015] Preferably, the transmission mechanism includes a transmission shaft, a driving gear and a slave bevel gear, and both ends of the transmission shaft are connected to the driving gear and the slave bevel gear respectively, the slave bevel gear is meshed with the active bevel gear, and the driving gear is meshed with the driving gear.

[0016] Preferably, the transmission shaft is connected to the interior of the mounting shell via a rotating seat.

[0017] Preferably, mounting cavities are symmetrically provided at the bottom of the mounting shell and on both sides of the drill bit, and an excavation mechanism is provided inside the mounting cavity. The excavation mechanism includes a rotating shaft, a digging impeller and a slave gear. The rotating shaft is rotatably connected to the inside of the mounting cavity, the digging impeller is fixed on the rotating shaft, and the slave gear is fixed on the rotating shaft and is located on one side of the digging impeller.

[0018] Preferably, the driving mechanism further includes a driving gear, which is fixedly mounted on the other end of the rotating shaft, and the driving gear is meshed with the slave gear via a connecting member.

[0019] Preferably, the connecting member includes a protective cover and a toothed belt, two ends of the protective cover are respectively sleeved on the rotating shaft and the rotary shaft, and two ends of the toothed belt are respectively engaged with the driving gear and the driven gear.

[0020] Preferably, the connecting head includes a connecting pipe, a rubber ring, an internal threaded connecting part, and a sealing plug. The connecting pipe is fixedly installed on the top of the mounting shell, the connecting pipe is connected to the main pipe, the internal threaded connecting part is opened on the upper side of the inner surface of the connecting pipe, and the rubber ring is embedded in the interior of the main pipe and is located on the lower side of the threaded connecting part.

[0021] Preferably, the sealing plug is fixed to the inside of the connecting pipe through a connecting arm, a sealing ring is bonded to the surface of the sealing plug, a fixed pipe head is provided inside the connecting pipe, and a threaded flange is fixedly connected to the lower side of the fixed pipe head surface.

[0022] The present invention also provides a method for using a hydrodynamic ground-source heat exchange buried pipe device, which is characterized by comprising the following steps:

[0023] S1: Connect the heat exchange tube to the connecting pipe and place the drill bit at the position corresponding to the buried pipe;

[0024] S2: The water in the water source is added to the interior of the main pipe through the heat exchange pipe through the power equipment;

[0025] S3: Water flows through the driving mechanism, driving the impeller to rotate, and through the transmission mechanism and connecting parts, driving the drilling mechanism and excavation mechanism respectively to perform ground drilling and excavation operations;

[0026] S4: water flows through the water jet holes on the drill bit of the soil drilling mechanism to impact the soil and assist in drilling and excavation;

[0027] S5: The heat exchange tube moves downward along with the buried tube device, and the soil discharged by the excavation mechanism fills the tube. When the tube dives to the depth corresponding to the length of the heat exchange tube, the water pumping is stopped and the heat exchange tube is pressed to seal it.

[0028] Compared with related technologies, the hydrodynamic ground source heat exchange buried pipe device and its use method provided by the present invention have the following beneficial effects:

[0029] The present invention provides a hydrodynamic ground source heat exchange buried pipe device and a method for using the same. A drill bit is provided in conjunction with a driving mechanism to drive the drill bit to rotate and drill holes in the soil. The diameter of the upper end of the drill bit is greater than the diagonal length of the cross section of the installation shell, so that the entire device can more easily follow the drill bit to move downward. At the same time, two excavation mechanisms facilitate the upward discharge of the drilled soil to pre-bury the heat exchange pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a first embodiment of a hydrodynamic ground-source heat exchange buried pipe device and a method of using the same provided by the present invention;

[0031] Figure 2 for Figure 1 The overall structural diagram shown;

[0032] Figure 3 for Figure 2 a side view of the whole shown;

[0033] Figure 4 for Figure 1The schematic diagram of the structure of the main part shown;

[0034] Figure 5 for Figure 1 The schematic diagram of the structure of the part of the unearthed mechanism shown;

[0035] Figure 6 for Figure 4 a rear view of the whole shown;

[0036] Figure 7 This is a structural schematic diagram of a second embodiment of the hydrodynamic ground source heat exchange buried pipe device and its use method provided by the present invention.

[0037] Numbers in the figure:

[0038] 1. Install the shell,

[0039] 2. Supervisor,

[0040] 3. Drilling mechanism, 31. Rotating tube, 32. Transmission gear, 33. Drill bit, 34. Water spray hole,

[0041] 4. Driving mechanism, 41. Mounting box, 42. Rotating shaft, 43. Driving impeller, 44. Driving bevel gear, 45. Driving gear,

[0042] 5. Rotating connector,

[0043] 6. Transmission mechanism, 61. Transmission shaft, 62. Driving gear, 63. Slave bevel gear,

[0044] 7. Excavation mechanism, 71. Rotating shaft, 72. Soil-cutting impeller, 73. Slave gear,

[0045] 8. Connector, 81. Connecting pipe, 82. Rubber ring, 83. Internal thread connection, 84. Sealing plug,

[0046] 9. Connector, 91. Protective cover, 92. Toothed belt,

[0047] 101. Fixed pipe head, 102. Threaded flange. DETAILED DESCRIPTION

[0048] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0049] First embodiment

[0050] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 ,in, Figure 1A schematic structural diagram of a first embodiment of a hydrodynamic ground-source heat exchange buried pipe device and a method of using the same provided by the present invention; Figure 2 for Figure 1 The overall structural diagram shown; Figure 3 for Figure 2 a side view of the whole shown; Figure 4 for Figure 1 The structural diagram of the main part shown; Figure 5 for Figure 1 The schematic diagram of the structure of the part of the unearthed mechanism shown; Figure 6 for Figure 4 The rear view of the whole is shown. The hydrodynamic ground source heat exchange buried pipe device includes:

[0051] The mounting shell 1 is provided with a connector 8 connected to the top of the mounting shell 1;

[0052] A main pipe 2, one end of which is connected to the connector 8;

[0053] The soil drilling mechanism 3 includes a rotating tube 31, a transmission gear 32, a drill bit 33, and a water spray hole 34. One end of the rotating tube 31 is connected to one end of the main pipe 2 via a rotating connector 5. The other end of the rotating tube 31 passes through the bottom of the mounting shell 1 and is connected to the drill bit 33. The drill bit 33 is provided with a plurality of water spray holes 34. The transmission gear 32 is fixedly mounted on the rotating tube 31. One side of the driving impeller 43 extends into the interior of the main pipe 2.

[0054] Two driving mechanisms 4, each comprising a mounting box 41, a rotating shaft 42, a driving impeller 43, and a driving bevel gear 44. The mounting box 41 is mounted on the main pipe 2, the driving impeller 43 is rotatably connected to the interior of the mounting box 41 via the rotating shaft 42, and the driving bevel gear 44 is fixed to one end of the rotating shaft 42 and located outside the mounting box 41;

[0055] The driving bevel gear 44 is in transmission connection with the transmission gear 32 via the transmission mechanism 6 .

[0056] The number of the driving mechanisms 4 is preferably two, symmetrically installed on both sides of the main pipe 2, and the driving mechanism 4, the transmission mechanism 6, the main pipe 2, the rotating pipe 31, the transmission gear 32, the slave gear 73, etc. are preferably made of plastic material;

[0057] A plurality of water spray holes 34 are provided around the bottom and surface of the drill bit 33, wherein a water injection cavity with the same diameter as the inner cavity of the rotating tube 31 is provided inside the drill bit 33, and the water spray holes 34 are connected with the inside of the water injection cavity. The drill bit 33 is made of plastic material with a metal shell on the surface, and an auger is provided on the surface of the metal shell to facilitate drilling.

[0058] The driving impeller 43 is fixed to the surface of the rotating shaft 42 . The rotating shaft 42 is rotatably connected to the interior of the installation box 41 . Both ends of the rotating shaft 42 pass through the installation box 41 and extend to the outside of the installation box 41 .

[0059] The penetration point between the rotating shaft 42 and the installation box 41 is processed by mechanical sealing.

[0060] The transmission mechanism 6 includes a transmission shaft 61 , a driving gear 62 and a slave bevel gear 63 . The two ends of the transmission shaft 61 are connected to the driving gear 62 and the slave bevel gear 63 respectively. The slave bevel gear 63 is engaged with the active bevel gear 44 , and the driving gear 62 is engaged with the driving gear 45 .

[0061] The transmission shaft 61 is connected to the interior of the mounting shell 1 via a rotating seat.

[0062] The diameter of the driving bevel gear 44 is larger than the diameter of the slave bevel gear 63 .

[0063] The rotating seat includes a fixed plate, which is fixed to the inner side of the mounting shell 1 through a connecting arm. The rotating shaft 42 is set through the fixed plate, and the surface of the rotating shaft 42 is located on the upper and lower sides of the fixed plate and is limited by baffles.

[0064] The bottom of the mounting shell 1 and both sides of the drill bit 33 are symmetrically provided with mounting cavities, and an excavation mechanism 7 is provided inside the mounting cavity. The excavation mechanism 7 includes a rotating shaft 71, a plowing impeller 72 and a slave gear 73. The rotating shaft 71 is rotatably connected to the inside of the mounting cavity, the plowing impeller 72 is fixed on the rotating shaft 71, and the slave gear 73 is fixed on the rotating shaft 71 and is located on one side of the plowing impeller 72.

[0065] The front side of the blade of the soil-cutting impeller 72 is provided with a bent portion to facilitate the soil to be moved outwards for easy excavation.

[0066] The driving mechanism 4 further includes a driving gear 45 , which is fixedly mounted on the other end of the rotating shaft 42 . The driving gear 45 is engaged with the slave gear 73 via a connecting member 9 .

[0067] The driving gear 45 is located outside the mounting box 41 .

[0068] The connecting member 9 includes a protective cover 91 and a toothed belt 92 . The two ends of the protective cover 91 are respectively sleeved on the rotating shaft 42 and the rotating shaft 71 . The two ends of the toothed belt 92 are respectively engaged with the driving gear 45 and the slave gear 73 .

[0069] The protective cover 91 is provided through the lower side of the mounting shell 1 and is fixedly connected to the mounting shell 1 at the penetration point. By providing the protective cover 91, the slave gear 73, the toothed belt 92 and the driving gear 45 can be protected to avoid contact with the soil, which may cause the toothed belt 92 to separate from the slave gear 73.

[0070] The working principles of the hydrodynamic ground source heat exchange buried pipe device and its use method provided by the present invention are as follows:

[0071] S1: Connect the heat exchange tube to the connecting tube 8 and place the drill bit 33 at the position corresponding to the buried tube;

[0072] S2: The water in the water source is added to the interior of the main pipe 2 through the heat exchange pipe by the power equipment;

[0073] The power equipment is preferably a water pump, the output end of the water pump is connected to the other end of the heat exchange tube, and the input end of the water pump is connected to a water source through a pipeline. The water source is a reservoir or other (such as a river, lake, etc.).

[0074] S3: Water flows through the driving mechanism 4, driving the impeller 43 to rotate, and drives the drilling mechanism 3 and the excavation mechanism 7 through the transmission mechanism 6 and the connecting member 9 respectively to drill holes and excavate the ground;

[0075] The impeller 43 is driven to rotate, and the rotating shaft 42 is driven to rotate, thereby driving the driving bevel gear 44 and the driving gear 45 to rotate;

[0076] The active bevel gear 44 drives the slave bevel gear 63 to rotate, the slave bevel gear 63 drives the transmission shaft 61 to rotate, the transmission shaft 61 drives the driving gear 62 to rotate, the driving gear 62 drives the rotating tube 31 to rotate through the transmission gear 32, thereby driving the drill bit 33 to rotate, and the drill bit 33 drills the ground through the auger on the surface, wherein the auger can move the drilled soil upward.

[0077] At the same time, the gear 45 is driven to rotate through the toothed belt 92 to drive the slave gear 73 to rotate, thereby driving the plowing impeller 72 to rotate, and both plowing impellers 72 rotate clockwise to bring the soil upward. Since the upper end diameter of the drill bit 33 is larger than the maximum cross-sectional width of the mounting shell 1, the soil can be discharged through the shell and the groove wall of the excavated channel.

[0078] S4: water flows through the water spray holes 34 on the drill bit 33 of the soil drilling mechanism 3 to impact the soil and assist in drilling and excavation;

[0079] Water can be sprayed out through the bottom end of the drill bit 33 and the water spray holes 34 on the surface, impacting the soil and softening it at the same time. The water is sprayed out through the water spray holes 34 to increase the pressure of the water spray, making the drilling operation easier.

[0080] S5: The heat exchange pipe moves downward along with the pipe burying device, and the pipe is buried by the soil discharged by the excavation mechanism 7. When the pipe dives to the depth corresponding to the length of the heat exchange pipe, the water pump is stopped and the water pump is disassembled from the heat exchange pipe.

[0081] Compared with related technologies, the hydrodynamic ground source heat exchange buried pipe device and its use method provided by the present invention have the following beneficial effects:

[0082] By setting a drill bit 33 to cooperate with the driving mechanism 4, the drill bit 33 is driven to rotate to drill the soil, and the diameter of the upper end of the drill bit 33 is greater than the diagonal length of the cross section of the mounting shell 1, so that the entire device can more easily follow the drill bit to move downward. At the same time, the two excavation mechanisms 7 facilitate the upward discharge of the drilled soil to pre-bury the heat exchange tubes;

[0083] The impeller 43 is driven by the water flow as the driving force for the drill bit 33 and the excavation mechanism, which is more energy-saving and environmentally friendly;

[0084] By opening a water spray hole on the drill bit 33, water can be sprayed out through the bottom end of the drill bit 33 and the water spray holes 34 on the surface, impacting the soil and softening it at the same time. The water is sprayed out through the water spray holes 34, increasing the pressure of the water spray, making the drilling operation easier.

[0085] Second embodiment

[0086] Please refer to Figure 7 Based on the hydrodynamic ground source heat exchange buried pipe device provided in the first embodiment of the present application, the second embodiment of the present application proposes another hydrodynamic ground source heat exchange buried pipe device.

[0087] Specifically, the difference of the hydrodynamic ground source heat exchange buried pipe device provided in the second embodiment of the present application is that the connecting head 8 includes a connecting pipe 81, a rubber ring 82, an internal threaded connection part 83, and a sealing plug 84. The connecting pipe 81 is fixedly installed on the top of the mounting shell 1, and the connecting pipe 81 is connected to the main pipe 2. The internal threaded connection part 83 is opened on the upper side of the inner surface of the connecting pipe 81, and the rubber ring 82 is embedded in the interior of the main pipe 2 and is located on the lower side of the threaded connection part 83.

[0088] The outer side of the rubber ring 82 protrudes and extends into the interior of the connecting pipe 81, so as to better contact with the threaded flange 102 and squeeze and limit it.

[0089] The sealing plug 84 is fixed to the inside of the connecting pipe 81 through a connecting arm. A sealing ring is bonded to the surface of the sealing plug 84. A fixed pipe head 101 is provided inside the connecting pipe 81. A threaded flange 102 is fixedly connected to the lower side of the surface of the fixed pipe head 101.

[0090] The fixed pipe head 101 is connected to one end of the heat exchange tube, and the connection method can be detachable installation or welding connection;

[0091] When the fixed pipe head 101 is connected to the connecting pipe 81, the threaded flange 102 is first threadedly connected to the internal threaded connection part 83, and the threaded flange 102 is screwed through the threaded connection part 83 to be located inside the connecting pipe 81. At this time, the threaded flange 102 and the internal threaded connection part 83 act to limit the fixed pipe head 101. At the same time, the threaded flange 102 and the rubber ring 82 are tightly positioned with the surface of the rubber ring 82. At the same time, the incoming water flow acts on the sealing plug 84, and the fixed pipe head 101 and the sealing plug 84 will not be sleeved.

[0092] When the filling is completed, the heat exchange tube is pressed, and the fixed tube head 101 is correspondingly sleeved on the surface of the sealing plug 84, and the sealing ring is tightly sealed with the inner surface of the fixed tube head 101, thereby The ends are sealed;

[0093] Since the soil and water are mixed into mud at this time, the heat exchange tubes can be pushed downward.

[0094] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydrodynamic ground source heat exchange buried pipe device, characterized in that: include: A mounting shell, wherein a connector is connected to the top of the mounting shell; a main pipe, one end of which is connected to the connector; A soil drilling mechanism comprising a rotating tube, a transmission gear, a drill bit, and a water spray hole. One end of the rotating tube is connected to one end of the main tube via a rotating connector. The other end of the rotating tube passes through the bottom of the mounting shell and is connected to the drill bit. The drill bit is provided with a plurality of water spray holes. The transmission gear is fixedly mounted on the rotating tube. The diameter of the upper end of the drill bit is greater than the diagonal length of the mounting shell cross section. Two drive mechanisms, each comprising a mounting box, a rotating shaft, a driving impeller, and a driving bevel gear. The mounting box is mounted on the main pipe, one side of the driving impeller extends into the interior of the main pipe, the driving impeller is rotatably connected to the interior of the mounting box via the rotating shaft, and the driving bevel gear is fixed to one end of the rotating shaft and located outside the mounting box. The driving bevel gear is connected to the transmission gear through a transmission mechanism; The driving impeller is fixed to the surface of the rotating shaft, the rotating shaft is rotatably connected to the interior of the installation box, and both ends of the rotating shaft pass through the installation box and extend to the outside of the installation box; The transmission mechanism includes a transmission shaft, a driving gear and a driven bevel gear, wherein the two ends of the transmission shaft are connected to the driving gear and the driven bevel gear respectively, the driven bevel gear is meshed with the active bevel gear, and the driving gear is meshed with the driving gear; The bottom of the mounting shell is symmetrically provided with mounting cavities on both sides of the drill bit. An excavation mechanism is provided inside the mounting cavity. The excavation mechanism includes a rotating shaft, a soil-scraping impeller, and a slave gear. The rotating shaft is rotatably connected to the interior of the mounting cavity. The soil-scraping impeller is fixed to the rotating shaft. The slave gear is fixed to the rotating shaft and is located on one side of the soil-scraping impeller. The driving mechanism further includes a driving gear, which is fixedly mounted on the other end of the rotating shaft and meshes with the driven gear via a connecting member; The connecting member includes a protective cover and a toothed belt. The two ends of the protective cover are respectively sleeved on the rotating shaft and the rotary shaft. The two ends of the toothed belt are respectively engaged with the driving gear and the driven gear.

2. The hydrodynamic ground source heat exchange buried pipe device according to claim 1, characterized in that: The transmission shaft is connected to the interior of the mounting shell through a rotating seat.

3. The hydrodynamic ground source heat exchange buried pipe device according to claim 1, characterized in that: The connector includes a connecting pipe, a rubber ring, an internal threaded connection part, and a sealing plug. The connecting pipe is fixedly installed on the top of the mounting shell. The connecting pipe is connected to the main pipe. The internal threaded connection part is opened on the upper side of the inner surface of the connecting pipe. The rubber ring is embedded in the interior of the main pipe and is located on the lower side of the threaded connection part.

4. The hydrodynamic ground source heat exchange buried pipe device according to claim 3, characterized in that: The sealing plug is fixed to the inside of the connecting pipe through a connecting arm. A sealing ring is bonded to the surface of the sealing plug. A fixed pipe head is provided inside the connecting pipe. A threaded flange is fixedly connected to the lower side of the fixed pipe head surface.

5. A method for using the hydrodynamic ground source heat exchange buried pipe device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Connect the heat exchange tube to the connecting pipe and place the drill bit at the position corresponding to the buried pipe; S2: The water in the water source is added to the interior of the main pipe through the heat exchange pipe through the power equipment; S3: Water flows through the driving mechanism, driving the impeller to rotate, and through the transmission mechanism and connecting parts, driving the drilling mechanism and excavation mechanism respectively to perform ground drilling and excavation operations; S4: water flows through the water jet holes on the drill bit of the soil drilling mechanism to impact the soil and assist in drilling and excavation; S5: The heat exchange tube moves downward along with the buried tube device, and the soil discharged by the excavation mechanism fills the tube. When the tube dives to the depth corresponding to the length of the heat exchange tube, the water pumping is stopped and the heat exchange tube is pressed to seal it.

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