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CN-224229565-U - Novel geothermal well heat preservation pipe

CN224229565UCN 224229565 UCN224229565 UCN 224229565UCN-224229565-U

Abstract

The application relates to a novel geothermal well heat preservation pipe, which relates to the technical field of geothermal wells and comprises a foundation, wherein a heat preservation mechanism is arranged inside the foundation, a limiting mechanism is arranged outside the heat preservation mechanism, the heat preservation mechanism comprises an outer pipe, the outer part of the outer pipe is fixedly connected inside the foundation, an aluminum foil layer is fixedly connected inside the outer pipe, a penetrating hole is formed in the outer part of the aluminum foil layer, a heat insulation layer is fixedly connected inside the aluminum foil layer, an inner pipe is fixedly connected inside the heat insulation layer, a connecting component is arranged outside the inner pipe, and a sealing component is fixedly connected outside the connecting component. The application has the effects of driving the vacuum heat insulation layer through the penetrating hole structure between the outer tube and the aluminum foil layer, realizing blocking of convection heat dissipation, thereby realizing the maximum reduction of heat loss in the conveying process of geothermal energy and improving the energy utilization rate and operation reliability of the geothermal utilization system.

Inventors

  • ZHANG KEMING

Assignees

  • 无锡贝来石油专用管有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (7)

  1. 1. The novel geothermal well heat preservation pipe comprises a foundation (1) and is characterized in that a heat preservation mechanism (2) is arranged in the foundation (1), and a limiting mechanism (3) is arranged outside the heat preservation mechanism (2); The heat preservation mechanism (2) comprises an outer pipe (21), the outside fixed connection of outer pipe (21) is in the inside of foundation (1), the inside fixedly connected with aluminium foil layer (22) of outer pipe (21), perforating hole (23) have been seted up to the outside on aluminium foil layer (22), the inside fixedly connected with insulating layer (24) on aluminium foil layer (22), the inside fixedly connected with inner tube (25) of insulating layer (24), coupling assembling (26) have been seted up to the outside of inner tube (25), the outside fixedly connected with seal assembly (27) of coupling assembling (26).
  2. 2. The novel geothermal well heat preservation pipe of claim 1, wherein the limiting mechanism (3) comprises a plurality of limiting columns (31), the tops of the limiting columns (31) are clamped at two sides of the outer pipe (21), the outer parts of the limiting columns (31) are fixedly connected with heat insulation rings (32), the heat insulation rings (32) are fixedly connected with heat insulation pipes (34), and the heat insulation pipes (34) are fixedly connected with support rings (33).
  3. 3. The novel geothermal well heat preservation pipe according to claim 2 is characterized in that a shrinkage layer (35) is fixedly connected to the inside of the heat preservation pipe (34), and a supplement layer (36) is fixedly connected to both sides of the outside of the shrinkage layer (35).
  4. 4. A novel geothermal well heat preservation pipe according to claim 3 is characterized in that the inner part of the shrinkage layer (35) is fixedly connected to the outer part of the inner pipe (25), and the inner part of the supplementary layer (36) is fixedly connected to the outer part of the inner pipe (25).
  5. 5. The novel geothermal well heat preservation pipe according to claim 1, wherein the connecting assembly (26) comprises a clamping groove (261), the clamping groove (261) is formed in one side of the outer portion of the inner pipe (25), a connecting groove (262) is formed in the other side of the inner pipe (25), and a thread groove (263) is formed in the outer portion of the clamping groove (261).
  6. 6. The novel geothermal well heat preservation pipe according to claim 5, wherein the sealing assembly (27) comprises an inner sealing ring (271), the outer portion of the inner sealing ring (271) is fixedly connected with the inner wall of the inner pipe (25), the inner wall of the connecting groove (262) is fixedly connected with a supporting sealing ring (272), and the outer wall of the connecting groove (262) is fixedly connected with a clamping sealing ring (273).
  7. 7. The novel geothermal well insulating pipe according to claim 6, wherein the outer portion of the clamping seal ring (273) is supported on the inner wall of the clamping groove (261), the outer portion of the abutting seal ring (272) is supported on the outer wall of the screw groove (263), and the outer portion of the inner seal ring (271) is supported on the outer wall of the clamping groove (261).

Description

Novel geothermal well heat preservation pipe Technical Field The application relates to the technical field of geothermal wells, in particular to a novel geothermal well heat preservation pipe. Background Geothermal resources are clean and environment-friendly energy sources, can be used as heat sources, water sources and mineral resources, and have important significance for economic development. Geothermal energy development is mainly divided into three types of shallow geothermal energy, medium-deep geothermal energy and deep geothermal energy. At present, a middle-deep non-interference geothermal technology with 'underground closed heat exchange and no water taking' as main characteristics is a non-water heating type extraction method which is commonly applied at present. The method is to drill underground to a certain depth by a mechanical drilling method, to inject softened water as a circulating working medium into a heat exchanger, and to conduct out heat energy in a rock-soil layer by heat conduction. Through retrieval, chinese patent publication No. CN214274928U discloses a geothermal well heat preservation pipe, which comprises an outer pipe and an inner pipe positioned in the outer pipe, wherein heat preservation materials are filled between the outer pipe and the inner pipe, the inner pipe and the outer pipe are both made of steel pipes, a coupling is connected to a port of the outer pipe, the coupling is arranged in a hollow mode, threads are arranged on an inner wall of the coupling in a surrounding mode, threads matched with the inner wall of the coupling are arranged at the port of the outer pipe, ports at two ends of the inner pipe are expanded outwards to collide with the inner wall of the outer pipe, and the ports at two ends of the inner pipe are fixed at the collision positions through welding. The utility model has better heat insulation effect. The heat source can be insulated in the conveying process, but the heat insulation structure is not reasonable enough in design, so that the heat loss of geothermal energy in the conveying process is high, the energy utilization rate of the geothermal energy utilization system is greatly reduced, a large amount of geothermal energy is wasted in the conveying process, the due value of the geothermal energy cannot be fully exerted, the operation stability of the system is also influenced by high heat loss, the operation load of equipment is increased, the operation reliability of the system is further reduced, the obstruction is brought to the efficient development and utilization of geothermal resources, and the novel geothermal well heat insulation pipe is provided for solving the problems. Disclosure of utility model The application aims to provide a novel geothermal well heat preservation pipe, which aims at solving the problems that the geothermal energy of a device is high in heat loss in the conveying process, and the energy utilization rate and the operation reliability of a geothermal utilization system are reduced. The novel geothermal well heat preservation pipe comprises a foundation, wherein a heat preservation mechanism is arranged inside the foundation, a limiting mechanism is arranged outside the heat preservation mechanism, the heat preservation mechanism comprises an outer pipe, the outer part of the outer pipe is fixedly connected inside the foundation, an aluminum foil layer is fixedly connected inside the outer pipe, a penetrating hole is formed in the outer part of the aluminum foil layer, a heat insulation layer is fixedly connected inside the aluminum foil layer, an inner pipe is fixedly connected inside the heat insulation layer, a connecting assembly is arranged outside the inner pipe, and a sealing assembly is fixedly connected outside the connecting assembly; According to the technical scheme, when the local hot fluid flows through the inner pipe, the connecting component and the sealing component at the outer part of the inner pipe are matched, so that the fluid is ensured to stably flow in the pipe, leakage is avoided, the inner side of the inner pipe is contacted with the local hot fluid, the outer side of the inner pipe is wrapped by the heat insulation layer, heat transfer to the outside is reduced by the heat insulation layer through self material characteristics, the aluminum foil layer at the outer side of the heat insulation layer reflects part of heat radiated outwards to the direction of the inner pipe by utilizing the reflection characteristics of the aluminum foil layer, heat loss is further prevented, the penetration holes in the aluminum foil layer are convenient for vacuumizing, the outer pipe is fixedly connected inside a foundation, support and protection are provided for the whole heat insulation mechanism, the limiting mechanism is arranged at the outer part of the outer pipe, the position of the heat insulation mechanism is limited, and the structures are ensured to be kept relatively stable in th