CN217400840U - Alloy heat insulation pipe - Google Patents
Alloy heat insulation pipe Download PDFInfo
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- CN217400840U CN217400840U CN202220649879.2U CN202220649879U CN217400840U CN 217400840 U CN217400840 U CN 217400840U CN 202220649879 U CN202220649879 U CN 202220649879U CN 217400840 U CN217400840 U CN 217400840U
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- pipe
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- heat insulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The utility model belongs to the technical field of geothermal resource exploitation and utilization, especially, relate to an alloy heat-insulating pipe. The alloy heat-insulation pipe overcomes the technical defects existing in the existing steel pipe column, can be further applied to geothermal wells with the depth of 3000-4000 m or deeper, has more reliable heat-insulation and corrosion-prevention performances, can be popularized to application occasions such as steam injection pipe columns of thick oil thermal production wells, has important significance for cost reduction and efficiency improvement of geothermal wells and thick oil thermal production wells, and fills the technical blank in the related field. An alloy heat insulation pipe, comprising: a pipe body and a pipe hoop; the connecting positions of the pipe body and the pipe hoop are respectively provided with thread teeth which are matched with each other; the tube body consists of an inner tube and an outer tube, and a tube body annular cavity is formed between the inner tube and the outer tube; the pipe hoop consists of a shell and an inner core, and a pipe hoop ring cavity is formed between the shell and the inner core; and the pipe body ring cavity and the pipe hoop ring cavity are subjected to heat insulation treatment.
Description
Technical Field
The utility model belongs to the technical field of geothermal resource exploitation and utilization, especially, relate to an alloy heat-insulating pipe.
Background
Geothermal Energy (Geothermal Energy) is natural heat Energy extracted from the earth crust, belongs to clean and sustainable Energy, and has the advantages of stability, continuity, high utilization efficiency and the like. The existing utilization of geothermal energy can be mainly divided into two categories of geothermal power generation and direct utilization. The geothermal resources in China are rich, and the geothermal resources are continuously used in the aspect of direct utilization of the geothermal resources for many years and are in the forefront of the world, wherein the central heating and hot water supply by utilizing the geothermal resources become the most common mode in the geothermal utilization, good economic and technical benefits are received, the energy is saved, the environmental protection pressure brought by fossil energy is greatly relieved, and the method has practical significance for realizing the goals of carbon peak reaching and carbon neutralization.
However, after further research, the inventor finds that the traditional steel pipe with a heat insulation layer is mostly used as a production heat insulation pipe column in the existing geothermal well and the thick oil thermal production well; the steel thermal insulation pipe column has defects such as: the steel pipe column has a self-weight; the well depth is limited (typically < 2500 m); the requirement on operation equipment is high, and the labor intensity is high; the steel pipe column is prone to corrosion failure, additional operating cost is increased by replacement, additional safety production risks of geothermal wells are increased, and the like. Therefore, it is highly desirable to provide a substitute product for steel pipe string with more reliable use effect and wider application conditions for those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides an alloy heat insulation pipe, this alloy heat insulation pipe has solved the technique that exists not enough in the current steel tubular column for this product can further be applied to in the geothermal well of the degree of depth 3000 meters ~ 4000 meters or more deeply, and has more reliable heat preservation corrosion resisting property, also can promote to application occasions such as viscous crude thermal recovery well steam injection tubular column, and the cost reduction efficiency to geothermal well and viscous crude thermal recovery well has the significance, fills the technical blank in relevant field.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an alloy heat insulation pipe, comprising:
a pipe body and a pipe hoop; the connecting positions of the pipe body and the pipe hoop are respectively provided with thread teeth which are matched with each other;
the pipe body consists of an inner pipe and an outer pipe, and a pipe body annular cavity is formed between the inner pipe and the outer pipe; the pipe hoop consists of a shell and an inner core, and a pipe hoop ring cavity is formed between the shell and the inner core;
and the pipe body ring cavity and the pipe hoop ring cavity are subjected to heat insulation treatment.
Preferably, the pipe body is formed by welding and fixing the annular end parts of the two sides of the inner pipe on the outer pipe, and the inner pipe and the outer pipe of the pipe body are made of aluminum alloy materials or titanium alloy materials or magnesium alloy materials.
Preferably, the pipe clamp is formed by welding and fixing the inner core on the shell in the circumferential direction, and both the shell and the inner core of the pipe clamp are made of aluminum alloy materials or titanium alloy materials or magnesium alloy materials.
Preferably, the method for heat insulation and preservation of the annular cavity of the pipe body and the annular cavity of the pipe hoop at least comprises the following steps:
filling heat insulation materials into the annular cavity of the pipe body and the annular cavity of the pipe hoop;
filling hydrogen absorption agents into the annular cavity of the pipe body and the annular cavity of the pipe hoop;
vacuumizing a pipe ring cavity and a pipe hoop ring cavity;
and filling inert gas back into the annular cavity of the pipe body and the annular cavity of the pipe hoop.
Preferably, the pipe body and the pipe hoop at the positions of the starting section and the ending section of the thread tooth are respectively provided with a sealing shoulder.
Preferably, after the pipe body is completely and rotationally engaged with the thread teeth of the pipe hoop, the pipe body is in interference fit with the sealing shoulder of the pipe hoop, and the interference magnitude of the sealing shoulder is 0.08mm-0.16 mm.
Preferably, the wall thickness of the inner pipe in the pipe body is 2.0-4.0mm, the wall thickness of the outer pipe is 3.5-6.0mm, and the gap of the annular cavity of the pipe body is not less than 4.0 mm;
the wall thickness of the shell in the pipe hoop is not less than 4.0mm, and the gap of the cavity of the pipe hoop is not less than 3.0 mm.
The utility model provides an alloy heat insulation pipe, which comprises a pipe body and a pipe hoop, wherein the pipe body consists of an inner pipe and an outer pipe, and a pipe body annular cavity is formed between the inner pipe and the outer pipe; the pipe hoop consists of a shell and an inner core, and a pipe hoop ring cavity is formed between the shell and the inner core. Compared with the conventional common seamless steel pipe, the alloy heat-insulation pipe with the structural characteristics has lighter weight, better corrosion resistance, better bending load resistance and relatively lower price; under the same condition, the weight of the aluminum alloy pipe column is only 1/3 of that of the steel pipe column, so that the weight of the pipe column can be greatly reduced, the weight of operating equipment is reduced, and the operating time is saved; the labor intensity is reduced, the service life of the pipe column is prolonged, and the greater well descending depth can be realized; meanwhile, due to the fact that the pipe ring cavity, the pipe hoop ring cavity and the sealing shoulder are arranged, the heat insulation effect and the sealing effect are more obvious, the heat conductivity coefficient of the pipe column is lower than 0.02 w/(m ∙ ℃), heat loss of fluid when the fluid passes through the pipe column can be greatly reduced, the geothermal utilization rate can be effectively improved by more than 35%, and higher technical and economic benefits are finally obtained. Therefore, the utility model provides an alloy thermal-insulated insulating tube has advantages such as simple structure, light in weight, corrosion-resistant, longe-lived, with low costs, thermal-insulated effect is showing, and the cost reduction to geothermal well and viscous crude thermal recovery well improves and has the significance.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural view of the alloy heat insulation pipe provided by the present invention.
Fig. 2 is a schematic structural view of the tube body of the present invention.
Fig. 3 is a schematic structural diagram of the middle pipe clamp of the present invention.
Reference numerals: 1-a tube body portion; 2-an outer tube; 3-inner tube; 4-a pipe body annular cavity; 5-a pipe hoop part; 6-a housing; 7-inner core; 8-pipe hoop cavity; 9-girth welding of the inner pipe and the outer pipe of the pipe body; 10-welding rings of the pipe hoop shell and the inner core; 11-thread teeth arranged outside the pipe body; 12-thread teeth arranged in the pipe hoop; 13-a sealing shoulder arranged at the head end of the external thread tooth of the pipe body; 14-a sealing shoulder arranged at the head end of the internal thread tooth of the pipe hoop; 15-a sealing shoulder arranged at the tail end of the external thread tooth of the pipe body; 16-a sealing shoulder arranged at the tail end of the thread tooth in the pipe hoop; 17-heat insulation materials filled in the annular cavity of the pipe hoop; 18-heat insulation materials filled in the annular cavity of the pipe body.
Detailed Description
The utility model provides an alloy thermal-insulated insulating tube, this alloy thermal-insulated insulating tube has solved the technique that exists not enough in the current steel tubular column for in 3000 meters ~ 4000 meters or the deeper geothermal well of degree of depth can further be applied to this product, and have more reliable heat preservation corrosion resisting property, also can promote to application occasions such as viscous crude thermal recovery well steam injection tubular column, it is significant to the cost reduction increase of geothermal well and viscous crude thermal recovery well, fill the technical blank in relevant field.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model provides an alloy heat insulation pipe, as shown in figure 1, specifically including: a pipe body and a pipe hoop; the connecting positions of the pipe body and the pipe hoop are respectively provided with thread teeth which are matched with each other.
Wherein, the tube body is composed of an inner tube and an outer tube; as shown in fig. 2, a pipe body annular cavity is formed between the inner pipe and the outer pipe; the pipe hoop consists of two parts, namely a shell and an inner core; as shown in fig. 3, a pipe hoop cavity is formed between the outer shell and the inner core. The pipe body ring cavity and the pipe hoop ring cavity are subjected to heat insulation treatment.
Furthermore, as a preferred embodiment of the present invention, the tube body is prepared by fixing the circumferential ends of the inner tube to the outer tube by welding, and the pipe hoop is prepared by fixing the inner core to the outer shell by welding; the inner pipe, the outer pipe, the shell and the inner core of the pipe hoop of the pipe body can be made of aluminum alloy materials, titanium alloy materials or magnesium alloy materials. The purpose of this arrangement is to ensure the molding reliability of the pipe hoop cavity and the pipe hoop cavity when the inner pipe and the outer pipe are formed.
As a detailed explanation of the thermal insulation treatment of the pipe annulus cavity and the pipe hoop annulus cavity, the specific treatment method can be referred to as follows: taking the pipe body annular cavity as an example for introduction, the heat insulation material can be filled into the pipe body annular cavity, or the hydrogen absorption agent can be filled into the pipe body annular cavity, or the pipe body annular cavity is vacuumized, or inert gas can be back filled into the pipe body annular cavity; when the heat insulation and preservation treatment is carried out in a mode of filling the heat insulation and preservation material into the annular cavity of the pipe body, the silicon dioxide aerogel flexible heat insulation felt can be used as the optional heat insulation and preservation material; the silica aerogel flexible heat insulation felt is coated on the inner pipe in advance, and is sealed in the formed pipe body annular cavity when the inner pipe and the outer pipe are welded and fixed, so that the heat insulation treatment of the pipe body annular cavity is realized. Similarly, the pipe hoop annular cavity is also explained by taking the mode of selectively filling the thermal insulation material for thermal insulation treatment as an example, and the thermal insulation material can also selectively use the silicon dioxide aerogel flexible thermal insulation felt. During specific treatment, the inner core is coated with the thermal insulation material silicon dioxide aerogel flexible thermal insulation felt in advance, and the thermal insulation material is sealed into the pipe hoop cavity by means of welding forming of the outer shell and the inner core, so that thermal insulation treatment of the pipe hoop cavity is realized.
In addition, as a preferred embodiment of the present invention, a sealing shoulder is further provided on the pipe body and the pipe hoop at the position of the thread tooth starting section and the ending section, respectively. Referring to fig. 1-3, when the tubular body is fully rotationally engaged with the thread teeth of the pipe clamp, the tubular body is in interference fit with the sealing shoulder of the pipe clamp.
Specifically, the two end ports of the pipe body are provided with external thread teeth, the head ends of the external thread teeth are provided with sealing shoulders (refer to the reference numeral 13), and the tail ends of the external thread teeth are provided with sealing shoulders (refer to the reference numeral 15); and the inner wall of the pipe hoop is provided with internal thread teeth (matched with the external thread teeth of the pipe body), a sealing shoulder (referenced with the reference numeral 14) is arranged at the head end of the internal thread teeth, and a sealing shoulder (referenced with the reference numeral 16) is arranged at the tail end of the internal thread teeth. After the threads of the external thread teeth and the internal thread teeth are completely screwed and connected, the sealing shoulder (reference numeral 13) is matched with the sealing shoulder (reference numeral 14) and the sealing shoulder (reference numeral 15) is matched with the sealing shoulder (reference numeral 16) in pairs to achieve an interference sealing effect, and the interference magnitude is preferably selected to be 0.08mm-0.16 mm.
In addition, as a supplementary explanation to the present invention, the following is a preferred limitation to the dimensions of each structural unit in the alloy heat-insulating pipe of the present invention: wherein, the wall thickness of the inner tube in the tube body is 2.0-4.0mm, the wall thickness of the outer tube is 3.5-6.0mm, and the gap of the annular cavity of the tube body is not less than 4.0 mm; the wall thickness of the shell in the pipe hoop is not less than 4.0mm, and the clearance of the cavity of the pipe hoop is not less than 3.0 mm.
The utility model provides an alloy heat insulation pipe, which comprises a pipe body and a pipe hoop, wherein the pipe body consists of an inner pipe and an outer pipe, and a pipe body annular cavity is formed between the inner pipe and the outer pipe; the pipe hoop consists of a shell and an inner core, and a pipe hoop ring cavity is formed between the shell and the inner core. Compared with the conventional common seamless steel pipe, the alloy heat-insulation pipe with the structural characteristics has lighter weight, better corrosion resistance, better bending load resistance and relatively lower price; under the same condition, the weight of the aluminum alloy pipe column is only 1/3 of that of the steel pipe column, so that the weight of the pipe column can be greatly reduced, the weight of operating equipment is reduced, and the operating time is saved; the labor intensity is reduced, the service life of the pipe column is prolonged, and the greater well descending depth can be realized; meanwhile, due to the fact that the pipe ring cavity, the pipe hoop ring cavity and the sealing shoulder are arranged, the heat insulation effect and the sealing effect are more obvious, the heat conductivity coefficient of the pipe column is lower than 0.02 w/(m ∙ ℃), heat loss of fluid when the fluid passes through the pipe column can be greatly reduced, the geothermal utilization rate can be effectively improved by more than 35%, and higher technical and economic benefits are finally obtained. Therefore, the utility model provides an alloy heat insulation pipe has advantages such as simple structure, light in weight, corrosion-resistant, longe-lived, with low costs, thermal-insulated effect is showing, and the cost reduction to geothermal well and viscous crude thermal recovery well is increased and is had the significance.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. An alloy heat insulation pipe is characterized by comprising:
a pipe body and a pipe hoop; the connecting positions of the pipe body and the pipe hoop are respectively provided with thread teeth which are matched with each other;
the tube body consists of an inner tube and an outer tube, and a tube body annular cavity is formed between the inner tube and the outer tube; the pipe hoop consists of a shell and an inner core, and a pipe hoop ring cavity is formed between the shell and the inner core;
the pipe body ring cavity and the pipe hoop ring cavity are subjected to heat insulation treatment;
the pipe body is prepared by welding and fixing the end parts at the two sides of the inner pipe on the outer pipe in the circumferential direction, and the inner pipe and the outer pipe of the pipe body are both made of aluminum alloy materials or titanium alloy materials or magnesium alloy materials;
the pipe hoop is prepared by welding and fixing the inner core on the shell in the circumferential direction, and the shell and the inner core of the pipe hoop are made of aluminum alloy materials or titanium alloy materials or magnesium alloy materials.
2. The alloy heat insulation pipe according to claim 1, wherein the pipe body and the pipe hoop at the positions of the start section and the end section of the thread tooth are respectively provided with a sealing shoulder.
3. The alloy heat insulation pipe according to claim 2, wherein the pipe body is in interference fit with the sealing shoulder of the pipe clamp after the pipe body is fully rotationally engaged with the thread teeth of the pipe clamp, and the interference of the sealing shoulder is 0.08mm-0.16 mm.
4. The alloy heat insulation pipe according to claim 1, wherein the wall thickness of the inner pipe in the pipe body is 2.0-4.0mm, the wall thickness of the outer pipe is 3.5-6.0mm, and the gap of the annular cavity of the pipe body is not less than 4.0 mm;
the wall thickness of the shell in the pipe hoop is not less than 4.0mm, and the clearance of the cavity of the pipe hoop is not less than 3.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220649879.2U CN217400840U (en) | 2022-03-24 | 2022-03-24 | Alloy heat insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220649879.2U CN217400840U (en) | 2022-03-24 | 2022-03-24 | Alloy heat insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217400840U true CN217400840U (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220649879.2U Active CN217400840U (en) | 2022-03-24 | 2022-03-24 | Alloy heat insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217400840U (en) |
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2022
- 2022-03-24 CN CN202220649879.2U patent/CN217400840U/en active Active
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