CN114575784B - High-vacuum wall heat insulation pipe column and preparation method thereof - Google Patents
High-vacuum wall heat insulation pipe column and preparation method thereof Download PDFInfo
- Publication number
- CN114575784B CN114575784B CN202210257826.0A CN202210257826A CN114575784B CN 114575784 B CN114575784 B CN 114575784B CN 202210257826 A CN202210257826 A CN 202210257826A CN 114575784 B CN114575784 B CN 114575784B
- Authority
- CN
- China
- Prior art keywords
- channel
- column
- pipe
- pipe column
- vacuumizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims description 56
- 238000005086 pumping Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 14
- 230000008859 change Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000005457 Black-body radiation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a high-vacuum wall heat-insulating pipe column and a preparation method thereof, wherein the high-vacuum wall heat-insulating pipe column comprises a plurality of pipe bodies, the pipe bodies form a pipe column, each pipe body comprises at least two layers of structures, and vacuum layers are arranged between every two adjacent structures; the support piece is fixed between the adjacent frameworks; the connecting piece is detachably connected between the plurality of pipe bodies. The invention uses the high vacuum wall pipe column, effectively reduces the overall heat conductivity coefficient of the pipe column, reduces the influence of environmental factors around the pipe column on the fluid in the pipe column, enhances the heat insulation performance of the pipe column, prolongs the service life of the pipe column, reduces the change of the temperature of the fluid in the pipe column on the basis of meeting the working state of the original pipe column, saves the working cost and improves the working efficiency.
Description
Technical Field
The invention relates to the field of petroleum and petrochemical industry, in particular to a high-vacuum wall heat insulation pipe column and a preparation method thereof.
Background
Along with the development of the economic society in China, the demand for petroleum is also increasing. The heat preservation effect of the pipe column has an important influence on the working process in the process of drilling and petroleum transportation. How to improve the heat exchange inside and outside the pipe string is always a troublesome problem.
Pipeline transportation is the most important transportation mode of crude oil, but in the transportation process, external factors can also have certain influence on the crude oil. For example, in some cold areas, the climate increases the difficulty of transportation, and particularly for oils with low freezing points, the temperature of the crude oil is continuously reduced along with the increase of the transportation distance, so that the quality of the crude oil is damaged, and the transportation cost is increased when the crude oil is reheated.
The pipe column is one of the tools necessary for drilling, during the drilling process of a high-temperature well, the temperature is continuously increased along with the continuous deepening of the well due to the existence of a ground temperature gradient in the process of downwards flowing drilling fluid from a wellhead, and when the drilling fluid reaches the bottom of the well, the drilling fluid reaches a very high temperature. High temperature drilling fluids can have a very detrimental effect on the bottom hole power drill, drill bit and associated measurement while drilling tools, and the performance of the drilling fluid itself can be greatly reduced by the high temperatures. The high-temperature fluid flows through the pipe column, and heat exchange with the surrounding stratum is necessarily carried out in three modes of heat conduction, convection and radiation due to the fact that the high-temperature fluid has a temperature difference with the surrounding stratum, and the problem that external heat enters the pipe column is not solved well.
The existing method for solving the problem mainly comprises the step of adding a layer of heat-insulating material into the pipe column to perform heat insulation, so that the heat exchange between the inside and outside of the pipe column is reduced to a certain extent, but the pipe column still has the problems of poor heat insulation effect and the like.
Disclosure of Invention
The invention aims to provide a high-vacuum wall heat-insulating pipe column and a preparation method thereof, so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: a high vacuum wall insulation column comprising:
the pipe body is arranged in a plurality, the pipe bodies form the pipe column, the pipe body comprises at least two layers of structures, and vacuum layers are arranged between the adjacent structures;
a support secured between adjacent ones of the structures;
the connecting piece, a plurality of can dismantle between the body be connected with the connecting piece.
Preferably, the pipe body comprises two layers of frameworks, the two layers of frameworks are an outer layer and an inner layer from outside to inside in sequence, the vacuum layer is arranged between the outer layer and the inner layer, and the outer side surface of the inner layer is coated with the radiation-proof layer.
Preferably, the support piece comprises a plurality of fixing grooves arranged on the outer side face of the inner layer, one ends of support columns are fixed in the fixing grooves, the other ends of the support columns are fixed on the inner side face of the outer layer, and the support columns are made of PVC materials.
Preferably, the connector comprises a male connector and a female connector fixed at two ends of the pipe body, and the male connector is detachably connected with the female connector.
Preferably, a first sealing shoulder surface is arranged at one end of the male connector, which is close to the pipe body, a first torque shoulder surface is arranged at one end of the male connector, which is far away from the pipe body, and a first thread area is arranged at the outer side surface of the male connector;
the female joint is provided with a second torque shoulder surface at one end close to the pipe body, a second sealing shoulder surface is arranged at one end far away from the pipe body, and a second thread area is arranged on the inner side surface of the female joint;
the first torque shoulder surface is matched with the second torque shoulder surface, the first sealing shoulder surface is matched with the second sealing shoulder surface, and the first thread area is matched with the second thread area.
Preferably, the outer layer is penetrated and provided with a vacuumizing channel, and a sealing plug is detachably connected in the vacuumizing channel.
Preferably, the vacuumizing channel comprises a first channel and a second channel which are communicated, the first channel is positioned at the outer side of the second channel, the outer diameter of the first channel is larger than that of the second channel, and the sealing plug is inserted into the second channel.
Preferably, the first channel is covered with a protective shell, and a first rotary buckle is detachably connected between the sealing plug and the protective shell.
Preferably, the vacuum pumping assembly is detachably connected in the vacuum pumping channel, the vacuum pumping assembly comprises a shell, a sealing ring is abutted between the outer side wall of the shell and the inner side wall of the first channel, a rotating column is arranged on the top wall of the shell in a penetrating mode, the rotating column stretches into one end of the shell and the sealing plug, a second rotary buckle is detachably connected between the rotating column and the sealing plug, the side wall of the shell is fixedly connected with and communicated with an exhaust pipe, and a valve and a pressure gauge are arranged on the exhaust pipe.
The preparation method of the high vacuum wall heat insulation pipe column comprises the following steps:
step one: fixing the pipe body and the connecting piece through friction welding;
step two: the outer side surfaces of the rest of the frameworks except the outermost framework are all fixed with the supporting pieces;
step three: welding and fixing adjacent frameworks through the supporting pieces in sequence, so that annular spaces are formed between the adjacent frameworks;
and step four, vacuumizing the annular space to form the vacuum layer.
The invention discloses the following technical effects:
(1) The high-vacuum wall pipe column is used, so that the overall heat conductivity coefficient of the pipe column is effectively reduced, and the influence of environmental factors around the pipe column on fluid in the pipe column is reduced.
(2) The heat insulation performance of the pipe column is enhanced, the service life of the pipe column is prolonged, the change of the temperature of fluid in the pipe column is reduced on the basis of meeting the working state of the original pipe column, the working cost is saved, and the working efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a high vacuum wall insulation column of the present invention;
FIG. 2 is a side view of the high vacuum wall insulation column of the present invention;
FIG. 3 is a state diagram of the invention during a vacuum operation;
FIG. 4 is a state diagram of the invention when the evacuation is completed;
the novel high-pressure sealing device comprises a first torque shoulder surface 1, a first threaded area 2, a first sealing shoulder surface 3, an outer layer 4, a vacuum layer 5, a support column 6, a radiation-proof layer 7, a fixing groove 8, an inner layer 9, a second torque shoulder surface 10, a second threaded area 11, a second sealing shoulder surface 12, a male connector 13, a female connector 14, a vacuumizing channel 15, a sealing plug 16, a protective shell 17, a first rotary buckle 18, a first rotary buckle 19, a shell 20, a sealing ring 21, a rotary column 22, a second rotary buckle 23, a valve 24 and a pressure gauge 25.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-4, the present invention provides a high vacuum wall insulation column comprising:
the pipe body is hollow and cylindrical, the number of the pipe bodies is multiple, the pipe bodies form a pipe column, the inside of the whole pipe column is designed with equal diameter, the stress concentration phenomenon is avoided, the service life of the pipe column is prolonged, and the cost is saved; the pipe body comprises at least two layers of structures, a vacuum layer 5 is arranged between the adjacent structures, and the vacuum layer 5 is manufactured by vacuumizing annular space formed between the multiple layers of structures;
the support piece is fixed between adjacent frameworks, so that a plurality of annular spaces can be formed after the frameworks are fixed;
and the connecting piece is detachably connected between the plurality of pipe bodies, and the plurality of pipe bodies are installed by using the connecting piece to form a pipe column.
According to the principle that heat conduction and heat convection can be isolated by vacuum, the whole heat conduction coefficient of the pipe column is reduced through the vacuum structure in the pipe column.
In a further optimization scheme, the connecting piece comprises a male connector 13 and a female connector 14 which are fixed at two ends of the pipe body, wherein the male connector 13 and the female connector 14 are detachably connected, specifically, a first sealing shoulder surface 3 is arranged at one end, close to the pipe body, of the male connector 13, a first torque shoulder surface 1 is arranged at one end, far away from the pipe body, of the male connector 13, and a first thread area 2 is arranged at the outer side surface of the male connector 13; the end of the female joint 14, which is close to the pipe body, is provided with a second torque shoulder surface 10, the end of the female joint 14, which is far away from the pipe body, is provided with a second sealing shoulder surface 12, and the inner side surface of the female joint 14 is provided with a second thread region 11; the first torque shoulder surface 1 is adapted to the second torque shoulder surface 10, the first sealing shoulder surface 3 is adapted to the second sealing shoulder surface 12, and the first threaded zone 2 is adapted to the second threaded zone 11. The male connector 13 and the female connector 14 adopt a double-layer sealing structure and a threaded connection mode, and the male connector 13 and the female connector 14 are connected with the pipe body in a friction welding mode.
As a preferred implementation mode, the pipe body comprises a two-layer structure, the two-layer structure comprises an outer layer 4 and an inner layer 9 from outside to inside in sequence, a vacuum layer 5 is arranged between the outer layer 4 and the inner layer 9, the outer side surface of the inner layer 9 is coated with a radiation-proof layer 7, the pipe body is made of a welding mode by adopting the two-layer structure of the outer layer 4 and the inner layer 9, the radiation-proof layer 7 is made of radiation-proof materials, the thickness of the radiation-proof layer 7 can be changed according to requirements, the radiation-proof layer is coated on the outer side surface of the inner layer 9, the radiation influence of heat can be reduced, the heat exchange inside and outside a pipe column is effectively reduced, the influence of the outside environment temperature on fluid in the pipe column is reduced, the conditions of overhigh fluid temperature in the pipe column caused by the condition that the outside heat enters the pipe column, the condition of the reduction of the loss temperature of the fluid heat in the pipe column are all obvious effects, and the integral heat insulation performance of the pipe column is improved.
As a preferred embodiment, the support piece comprises a plurality of fixed slots 8 arranged on the outer side surface of the inner layer 9, one ends of support columns 6 are fixed in the fixed slots 8, the other ends of the support columns 6 are fixed with the inner side surface of the outer layer 4, one ends of the support columns 6 are connected with the fixed slots 8 in a welding mode, the other ends of the support columns are supported by point contact with the outer layer 4, the deformation of the outer layer 4 can be prevented by the point contact mode, the heat leakage caused by supporting can be reduced to the minimum, the fixed slots 8 play a role in fixing the support columns 6, the support columns 6 are made of PVC materials, the heat conductivity of the support columns 6 is reduced, the heat insulation effect of the vacuum wall pipe column is improved, and the strength and the size of the support columns 6 can be changed according to requirements.
As a preferred embodiment, the outer layer 4 is provided with a vacuum-pumping channel 15 in a penetrating way, a sealing plug 16 is detachably connected in the vacuum-pumping channel 15, the vacuum-pumping channel 15 is used for communicating an external air pump, the opening of the sealing plug 16 can vacuumize an annular space between the outer layer 4 and the inner layer 9, the specific structure of the vacuum-pumping channel 15 comprises a first channel and a second channel which are communicated, the first channel is positioned at the outer side of the second channel, the outer diameter of the first channel is larger than that of the second channel, and the sealing plug 16 is inserted in the second channel.
When the evacuation operation, can dismantle in the evacuation passageway 15 and be connected with the evacuation subassembly, the evacuation subassembly includes shell 19, the butt has sealing washer 20 between the lateral wall of shell 19 and the inside wall of first passageway, the roof of shell 19 wears to be equipped with column spinner 21, column spinner 21 stretches into and can dismantle between the one end of shell 19 and the sealing plug 16 and be connected with second rotatory buckle 22, the lateral wall rigid coupling of shell 19 and intercommunication have exhaust tube 23, install valve 24 and manometer 25 on the exhaust tube 23, after the assembly of evacuation subassembly according to above-mentioned mode, utilize the air pump to connect exhaust tube 23, can carry out the evacuation with the annular space between skin 4 and the inlayer 9.
After the vacuumizing is completed, the first channel is covered with the protective shell 17, a first rotary buckle 18 is detachably connected between the sealing plug 16 and the protective shell 17, the sealing plug 16 is reset, and meanwhile, the vacuumizing assembly is taken out and the protective shell 17 is installed at the first channel.
The specific steps of the vacuumizing operation are as follows:
(1) The vacuumizing assembly is arranged on a vacuumizing channel 15 reserved on the outer layer 4, and a sealing ring 20 is arranged at the contact part of the outer shell 19 and the first channel, so that the tightness in the vacuumizing process is ensured; meanwhile, a sealing ring 20 is also arranged at the joint of the rotary column 21 and the shell 19;
(2) The connection part between the upper part of the sealing plug 16 and the lower part of the rotary column 21 is provided with a second rotary buckle 22, and after the rotary column 21 is inserted into the sealing plug 16, the sealing plug 16 is lifted up through the anticlockwise rotation of the rotary column 21;
(3) Opening a pressure gauge 25 and a valve 24 on the exhaust pipe 23, and pumping gas in the annular space by using an external air pump;
(4) After the gas is extracted, when the value of the pressure gauge 25 is stable, the valve 24 is closed, a closed space is formed in the device, and the rotary column 21 rotates clockwise to lower the outer sealing plug 16 to the second channel, so that the outer layer 4 forms a sealed space;
(5) At this time, the rotary column 21 is rotated to separate the rotary column from the second rotary buckle 22 connected with the sealing plug 16, the vacuumizing assembly is removed, and the sealing plug 16 is welded to block the hole;
(6) After the sealing plug 16 is welded, a housing 19 made of the same material as the outer layer 4 is mounted on the sealing plug 16 by a first rotary buckle 18 and welded.
The preparation method of the high vacuum wall heat insulation pipe column comprises the following steps:
step one: the male connector 13 and the female connector 14 are fixedly connected with the pipe column pipe body through friction welding;
step two: the surface of the inner layer 9 is welded with a fixed groove 8, a group of support columns 6 are arranged at intervals of 1m, the support columns 6 are made of PVC, the support columns 6 are connected with the fixed groove 8 in a welding mode, and the surface of the inner layer 9 is coated with a radiation protection layer 7;
step three: welding the outer layer 4 and the inner layer 9 to form an annular space, and reserving a vacuumizing channel 15 on the surface of the outer layer 4;
and fourthly, vacuumizing from the reserved vacuumizing channel 15 by using a vacuumizing assembly, and welding and plugging holes after vacuumizing is finished to form the vacuum layer 5.
One example of the present invention is to simulate the thermal insulation effect of a high vacuum wall thermal insulation tubing string in a downhole operating condition. The thickness of the outer layer 4 of the high vacuum wall heat insulation pipe column is 5mm, the thickness of the inner layer 9 is 2mm, the thickness of the vacuum layer 5 is 2mm, the thickness of the radiation protection layer 7 is 1mm, the well depth is 8000m, the ground temperature gradient is 3 ℃/100m, the well head slurry is 20 ℃, and the bottom temperature is not higher than 140 ℃.
The formula involved in the calculation process is as follows:
(1)wherein lambda is the heat conductivity coefficient, and the unit is W/(m.K); a is the area;
(2) Phi=haΔt, where h is the surface heat transfer coefficient in W/(m) 2 K); a is the area; Δt is the temperature difference;
(3)wherein ε 1 Is emissivity; a is that 1 Surface area for internal objects; t (T) 1 Is the internal object surface temperature; t (T) 2 Is the external object surface temperature; sigma is the blackbody radiation constant, which has a value of 5.67×10 -8 W/(m 2 ·K 4 )；
(4) Φ=ak Δt, where k is the heat transfer coefficient in W/(m) 2 ·K)；
(5)
Wherein l is the length of the pipe column; d is the radius; lambda is the coefficient of thermal conductivity; t is the temperature.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. A high vacuum wall insulation column for use in insulating heat in an downhole operating condition, comprising:
the pipe body is provided with a plurality of pipe bodies, the pipe bodies form the pipe column, the pipe body comprises a two-layer framework, the two layers of the framework are an outer layer (4) and an inner layer (9) from outside to inside in sequence, a vacuum layer (5) is arranged between the outer layer (4) and the inner layer (9), and the outer side surface of the inner layer (9) is coated with a radiation protection layer (7);
a support secured between adjacent ones of the structures;
the connecting piece is detachably connected among the plurality of pipe bodies;
the outer layer (4) is provided with a vacuumizing channel (15) in a penetrating way, and a sealing plug (16) is detachably connected in the vacuumizing channel (15);
the vacuumizing channel (15) comprises a first channel and a second channel which are communicated, the first channel is positioned at the outer side of the second channel, the outer diameter of the first channel is larger than that of the second channel, and the sealing plug (16) is inserted into the second channel;
the first channel is covered with a protective shell (17), and a first rotary buckle (18) is detachably connected between the sealing plug (16) and the protective shell (17);
the vacuum-pumping device is characterized in that a vacuum-pumping assembly is detachably connected in the vacuum-pumping channel (15), the vacuum-pumping assembly comprises a shell (19), a sealing ring (20) is abutted between the outer side wall of the shell (19) and the inner side wall of the first channel, a rotating column (21) is arranged on the top wall of the shell (19) in a penetrating mode, a second rotating buckle (22) is detachably connected between one end of the rotating column (21) extending into the shell (19) and the sealing plug (16), an exhaust pipe (23) is fixedly connected and communicated with the side wall of the shell (19), and a valve (24) and a pressure gauge (25) are arranged on the exhaust pipe (23);
the support piece comprises a plurality of fixing grooves (8) arranged on the outer side face of the inner layer (9), one ends of support columns (6) are fixed in the fixing grooves (8), the other ends of the support columns (6) are fixed with the inner side face of the outer layer (4), and the support columns (6) are made of PVC materials;
the specific steps of the vacuumizing operation by using the vacuumizing assembly are as follows:
the vacuumizing assembly is arranged on the vacuumizing channel (15) reserved on the outer layer (4), and the sealing ring (20) is arranged at the contact position of the shell (19) and the first channel, so that the tightness in the vacuumizing process is ensured; meanwhile, the sealing ring (20) is also arranged at the joint of the rotary column (21) and the shell (19);
the second rotary buckle (22) is arranged at the connecting part of the upper part of the sealing plug (16) and the lower part of the rotary column (21), and after the rotary column (21) is inserted into the sealing plug (16), the sealing plug (16) is rotationally buckled and lifted up through the anticlockwise rotation of the rotary column (21);
opening the pressure gauge (25) and the valve (24) on the exhaust pipe (23), and pumping gas in an annular space formed between adjacent frameworks by using an external air pump;
after the gas is extracted, when the value of the pressure gauge (25) is stable, the valve (24) is closed, a closed space is formed between the vacuumizing assembly and the pipe body, and the rotary column (21) rotates clockwise to lower the sealing plug (16) to a second channel, so that a sealed space is formed between the outer layer (4) and the vacuumizing assembly;
at the moment, the rotary column (21) is rotated to be separated from the second rotary buckle (22) connected with the sealing plug (16), the vacuumizing assembly is removed, and the sealing plug (16) is welded to block holes;
after the sealing plug (16) is welded, the protective shell (17) which is made of the same material as the outer layer (4) is arranged on the sealing plug (16) through the first rotary buckle (18) and is welded.
2. The high vacuum wall insulation column of claim 1, wherein: the connecting piece comprises a male connector (13) and a female connector (14) which are fixed at two ends of the pipe body, and the male connector (13) is detachably connected with the female connector (14).
3. The high vacuum wall insulation column of claim 2, wherein:
a first sealing shoulder surface (3) is arranged at one end, close to the pipe body, of the male connector (13), a first torque shoulder surface (1) is arranged at one end, far away from the pipe body, of the male connector (13), and a first thread area (2) is arranged at the outer side surface of the male connector (13);
a second torque shoulder surface (10) is arranged at one end, close to the pipe body, of the female joint (14), a second sealing shoulder surface (12) is arranged at one end, far away from the pipe body, of the female joint (14), and a second thread area (11) is arranged at the inner side surface of the female joint (14);
the first torque shoulder surface (1) is matched with the second torque shoulder surface (10), the first sealing shoulder surface (3) is matched with the second sealing shoulder surface (12), and the first thread region (2) is matched with the second thread region (11).
4. A method for preparing a high vacuum wall insulation column based on the high vacuum wall insulation column of claim 1, comprising the steps of:
step one: fixing the pipe body and the connecting piece through friction welding;
step two: the outer side surfaces of the rest of the frameworks except the outermost framework are all fixed with the supporting pieces;
step three: welding and fixing adjacent frameworks through the supporting pieces in sequence, so that annular spaces are formed between the adjacent frameworks;
and step four, vacuumizing the annular space to form the vacuum layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210257826.0A CN114575784B (en) | 2022-03-14 | 2022-03-14 | High-vacuum wall heat insulation pipe column and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210257826.0A CN114575784B (en) | 2022-03-14 | 2022-03-14 | High-vacuum wall heat insulation pipe column and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114575784A CN114575784A (en) | 2022-06-03 |
| CN114575784B true CN114575784B (en) | 2023-12-26 |
Family
ID=81781360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210257826.0A Active CN114575784B (en) | 2022-03-14 | 2022-03-14 | High-vacuum wall heat insulation pipe column and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114575784B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617699A (en) * | 1969-03-10 | 1971-11-02 | Donald F Othmer | A system for electrically heating a fluid being transported in a pipe |
| RU2129202C1 (en) * | 1997-08-12 | 1999-04-20 | Открытое акционерное общество "Удмуртнефть" | Heat-insulated pipe string |
| CN101539233A (en) * | 2009-04-21 | 2009-09-23 | 徐林波 | Vacuum thermal insulating pipeline and manufacture and application thereof |
| EP2253782A1 (en) * | 2009-05-19 | 2010-11-24 | Pacadar S.A. | Support structure for a wind turbine and procedure to erect the support structure |
| CN104369896A (en) * | 2014-11-12 | 2015-02-25 | 山西江淮重工有限责任公司 | Vacuuming and nitrogen inflating device for sealed packaging box |
| CN104612628A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Method for prolonging service life of vacuum insulated oil tube by filling high-pressure argon |
| CN107364598A (en) * | 2017-09-05 | 2017-11-21 | 安顺职业技术学院 | A kind of extraction sector for vacuumizing |
| CN207917616U (en) * | 2018-02-14 | 2018-09-28 | 廖玉连 | The pumping rod seal structure of vacuum extractor |
| CN208089238U (en) * | 2018-03-16 | 2018-11-13 | 胜利油田孚瑞特石油装备有限责任公司 | A kind of vacuum heat insulation tube |
| CN109869511A (en) * | 2019-03-25 | 2019-06-11 | 浙江德宏汽车电子电器股份有限公司 | A kind of vacuum pump exhaust tube structure |
| CN210164435U (en) * | 2019-05-29 | 2020-03-20 | 淄博孚瑞特热能科技有限公司 | Heat-point-free heat-insulation tubing coupling heat-insulation structure |
| CN211780247U (en) * | 2019-12-26 | 2020-10-27 | 李俊良 | Detection apparatus for pipeline under pressure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7921913B2 (en) * | 2005-11-01 | 2011-04-12 | Baker Hughes Incorporated | Vacuum insulated dewar flask |
| CA2873170C (en) * | 2013-12-03 | 2021-11-23 | Conocophillips Company | Dual vacuum insulated tubing well design |
-
2022
- 2022-03-14 CN CN202210257826.0A patent/CN114575784B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617699A (en) * | 1969-03-10 | 1971-11-02 | Donald F Othmer | A system for electrically heating a fluid being transported in a pipe |
| RU2129202C1 (en) * | 1997-08-12 | 1999-04-20 | Открытое акционерное общество "Удмуртнефть" | Heat-insulated pipe string |
| CN101539233A (en) * | 2009-04-21 | 2009-09-23 | 徐林波 | Vacuum thermal insulating pipeline and manufacture and application thereof |
| EP2253782A1 (en) * | 2009-05-19 | 2010-11-24 | Pacadar S.A. | Support structure for a wind turbine and procedure to erect the support structure |
| CN104369896A (en) * | 2014-11-12 | 2015-02-25 | 山西江淮重工有限责任公司 | Vacuuming and nitrogen inflating device for sealed packaging box |
| CN104612628A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Method for prolonging service life of vacuum insulated oil tube by filling high-pressure argon |
| CN107364598A (en) * | 2017-09-05 | 2017-11-21 | 安顺职业技术学院 | A kind of extraction sector for vacuumizing |
| CN207917616U (en) * | 2018-02-14 | 2018-09-28 | 廖玉连 | The pumping rod seal structure of vacuum extractor |
| CN208089238U (en) * | 2018-03-16 | 2018-11-13 | 胜利油田孚瑞特石油装备有限责任公司 | A kind of vacuum heat insulation tube |
| CN109869511A (en) * | 2019-03-25 | 2019-06-11 | 浙江德宏汽车电子电器股份有限公司 | A kind of vacuum pump exhaust tube structure |
| CN210164435U (en) * | 2019-05-29 | 2020-03-20 | 淄博孚瑞特热能科技有限公司 | Heat-point-free heat-insulation tubing coupling heat-insulation structure |
| CN211780247U (en) * | 2019-12-26 | 2020-10-27 | 李俊良 | Detection apparatus for pipeline under pressure |
Non-Patent Citations (1)
| Title |
|---|
| 深水高温高压井隔热测试管柱技术;阚长宾;杨进;于晓聪;管申;张超;胡南丁;;石油钻采工艺(第06期);第90-94页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114575784A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5862866A (en) | Double walled insulated tubing and method of installing same | |
| CN110145287B (en) | Thickened oil heating viscosity reduction composite oil production system | |
| CA2762859A1 (en) | Pre-stressed insulated tubing | |
| CN107288583B (en) | Series-type variable pitch downhole fluid electric heater | |
| CN114575784B (en) | High-vacuum wall heat insulation pipe column and preparation method thereof | |
| CA2675784C (en) | Insulated double-walled well completion tubing for high temperature use | |
| CN111364924A (en) | Heat insulation, heat preservation and test integrated continuous oil pipe | |
| RU2129202C1 (en) | Heat-insulated pipe string | |
| CN203978312U (en) | Heat insulation box cupling | |
| CN202249887U (en) | Cable-penetrating thermal recovery wellhead device for electric submersible pump | |
| WO2012048535A1 (en) | Connection structure for insulated oil pipe | |
| CN211924137U (en) | Oil field production tree heat preservation device | |
| CN201747288U (en) | Thermal recovery slip type casing head | |
| CN217632394U (en) | Special thread heat insulation oil pipe device for thick oil exploitation | |
| CN201053314Y (en) | Horizontal well flexible short section | |
| CN209799880U (en) | inside and outside thermal-insulated directly links type heat-insulated oil pipe | |
| CN208518614U (en) | A kind of ocean insulated tubing | |
| RU2386009C2 (en) | Adiabatic column | |
| CN205135526U (en) | Steam flooding high temperature seals scurries technology tubular column | |
| CN218119105U (en) | Heat-bridge-free heat-insulation pipe with inner and outer flat structures | |
| RU211471U1 (en) | TUBE AND COMPRESSOR PIPE WITH THIN LAYER THERMAL INSULATION | |
| CN105134093B (en) | Interior circulation is incubated oil pick-up tube | |
| CN217356144U (en) | Flexible central heat exchange tube | |
| CN218206604U (en) | Thermal insulation pipe column device for deep geothermal energy exploitation | |
| CN209799878U (en) | Vacuum high-torsion-resistance heat insulation oil pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |