Heat preservation equipment capable of being vacuumized repeatedly and vacuumizing method of heat preservation equipment

Abstract

The invention belongs to the technical field of oil-gas exploration, and discloses heat preservation equipment capable of being vacuumized repeatedly and a vacuumizing method of the heat preservation equipment. The first sealing connector and the second sealing connector are detachably connected with the vacuumizing device in a sealed mode, the first sealing connector and the second sealing connector can be switched between the opening state and the sealing state, and the vacuum cavity is formed and kept. A vacuum gauge is arranged on the outer pipe assembly, the vacuum degree is monitored in real time, an air suction tank adsorption material is arranged to release gas, and the vacuum maintaining capacity is enhanced. And a plurality of first sealing joints are uniformly arranged at the opening end of the outer pipe assembly, so that the air exhaust rate is increased, and the vacuum uniformity is improved. The heat insulation connecting assembly achieves sealing and heat insulation connection of the inner pipe and the outer pipe, and meanwhile provides electric connection between the electric wire and external equipment. The heat absorption assembly absorbs residual heat, the influence of high temperature on the electronic assembly is reduced, the reliability of the exploration instrument under the extreme temperature condition and the thermal stability of long-term continuous operation are remarkably improved, and meanwhile the equipment use cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of oil and gas exploration technology, and in particular to a heat preservation device capable of repeated vacuuming and its vacuuming method. Background Technology

[0002] During oil and gas exploration, logging instruments need to operate in formations thousands of meters deep where ambient temperatures can exceed 200 degrees Celsius—an environment far exceeding the safe operating temperature of electronic circuitry. To ensure the normal operation and measurement accuracy of the instruments, the electronic circuitry must be housed in a vacuum insulated bottle. A vacuum insulated bottle is a container that uses a vacuum cavity formed between its inner and outer layers to achieve thermal insulation; it is typically a long cylindrical shape with a hollow interior to house the electronic circuitry. The thermal insulation effect of the vacuum layer effectively prevents the intrusion of high external temperatures, thus meeting the thermal stability requirements of long-term exploration missions.

[0003] However, current vacuum insulated bottles still have several problems: First, the bottle body is relatively long and the vacuum layer thickness is uneven, making the vacuuming process time-consuming and resulting in uneven vacuum distribution within the vacuum layer. Second, when exposed to high temperatures for extended periods, the vacuum level gradually decreases, leading to a decline in insulation performance. Simultaneously, external metal wires easily conduct heat into the vacuum insulated bottle, further affecting its insulation effect. Furthermore, the manufacturing process of vacuum insulated bottles is complex and costly. Once the vacuum level decreases, traditional structures often employ a one-time vacuuming design, making it impossible to restore the vacuum state. This results in a decline in overall insulation performance, rendering the equipment unusable and unrecyclable. Summary of the Invention

[0004] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this invention is to provide a heat-insulating device and its vacuuming method capable of repeated vacuuming, thereby enabling repeated vacuuming, reducing the cost of using vacuum insulated bottles, shortening vacuuming time, improving the uniformity of the vacuum layer, and enhancing vacuum retention capacity; simultaneously, it effectively reduces the conduction of external heat to the interior, ensuring the stable operation of electronic components under high-temperature conditions, thus significantly improving the reliability of exploration instruments in extreme environments and meeting the thermal stability requirements for long-term continuous operation.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A re-vacuum-resistant thermal insulation device for housing electronic components including circuit boards and wires, the re-vacuum-resistant thermal insulation device comprising:

[0007] A vacuum insulated bottle includes an inner tube assembly, an outer tube assembly, and a heat-insulating connection assembly. The outer tube assembly is a sealed cavity with at least one open end and the rest closed ends. Multiple first sealing joints are evenly spaced around the central axis of the outer tube assembly at the open end, forming an annular area that is sealed to one end of the heat-insulating connection assembly. A second sealing joint is located at the central axis of the closed end. Both the first and second sealing joints can switch between an open and a sealed state. The inner tube assembly is placed inside the outer tube assembly, with its end near the open end sealed to the other end of the heat-insulating connection assembly, and its end away from the open end being a closed end. An electronic component is placed inside the inner tube assembly, with heat-absorbing components at both ends. A wire passes through the heat-absorbing component near the open end and is electrically connected to the heat-insulating connection assembly. A vacuum gauge and at least one replaceable suction canister can be selectively sealed to either the open end or the closed end.

[0008] The vacuum device includes a first connecting mechanism, a second connecting mechanism, and a vacuum driving assembly; one end of the first connecting mechanism and the second connecting mechanism are respectively connected to the vacuum driving assembly, and the other end is respectively detachably and sealingly connected to the first sealing joint and the second sealing joint, for simultaneously switching the state of each sealing joint and evacuating the inner tube assembly and the outer tube assembly to form a vacuum cavity.

[0009] In some optional embodiments, the outer tube assembly includes an outer tube and an open end cap that is sealed to the end of the outer tube; the open end cap has a first through hole that seals with the first sealing joint, the diameter of which gradually decreases along the direction close to the vacuum cavity; the first sealing joint has sealing sections with progressively decreasing outer diameters along the direction close to the vacuum cavity, and a first sealing ring and a second sealing ring are sequentially spaced apart; the first sealing joint reciprocates along the axial direction of the outer tube assembly; an air intake channel is formed inside the first sealing joint along its length, and an air intake through hole communicating with the vacuum cavity is formed on the side wall between the first sealing ring and the second sealing ring.

[0010] In some alternative embodiments, the first sealing joint portion extends from the side of the first through hole away from the vacuum cavity and can abut against the outer surface of the open end cap; the outer wall of the first sealing joint is provided with a first limiting protrusion; the first through hole is provided with a first annular boss at the hole wall at the end away from the vacuum cavity, which cooperates with the first limiting protrusion to limit the movement distance of the first sealing joint towards the vacuum cavity.

[0011] In some optional embodiments, the first connecting mechanism includes a plurality of first suction pipe assemblies, a linkage drive assembly, and a first suction pipe; one end of each of the plurality of first suction pipe assemblies is detachably and sealed to a plurality of first sealing joints, and the other end of each is connected to the linkage drive assembly; the linkage drive assembly can simultaneously drive the plurality of first suction pipe assemblies to operate synchronously and perform suction at the same time; one end of the first suction pipe is connected to the linkage drive assembly, and the other end is sealed to the suction drive assembly, for evacuating the vacuum chamber.

[0012] In some optional embodiments, the linkage drive assembly includes a first suction pipe connector, a linkage base, an adapter plate, and a support link; the first suction pipe assembly includes a first link and a second link;

[0013] The linkage base, the first air extraction pipe connector, and the first air extraction pipe are sequentially and sealed in connection. The linkage base has a linkage cavity inside. Multiple first sealing connectors, first connecting rods, and second connecting rods that are corresponding to each other are sequentially and sealed in connection along the axial direction of the outer pipe assembly, and are sealed in connection with the linkage cavity inside the linkage base to form an air extraction passage. Multiple first connecting rods pass through the adapter plate and are fixedly connected to the adapter plate. One end of the support connecting rod is fixedly connected to the adapter plate, and the other end passes through the central area enclosed by multiple first connecting rods and is fixedly connected to the linkage base.

[0014] In some alternative embodiments, an L-shaped groove is provided on the inner wall of the end of the first sealing joint away from the vacuum cavity, and a connecting protrusion is provided on the outer wall of the connecting end of the first connecting rod and the first sealing joint. The connecting protrusion and the L-shaped groove are detachably connected.

[0015] In some alternative embodiments, the outer tube assembly further includes a closed end cap, which has a plurality of third through holes circumferentially opened around the central axis of the outer tube assembly for sealing and installing the vacuum gauge and the suction canister.

[0016] The getter can includes a can body and a removable plug. The can body contains a getter, and its outer wall has holes of the same diameter, with a third sealing ring and a fourth sealing ring spaced apart along the direction close to the vacuum cavity. A vent hole is opened on the side wall of the can body between the two sealing rings to communicate with the vacuum cavity. The third through hole has a sealing section with progressively larger diameter along the direction close to the vacuum cavity. The can body can reciprocate axially along the third through hole. The third sealing ring is always sealed to the hole wall, and the fourth sealing ring can selectively seal to the hole wall.

[0017] In some optional embodiments, the thermal insulation connection assembly includes a thermal insulation body, a wire, an inner connector, and an outer connector. The thermal insulation body is made of insulating and thermally insulating material, and the wire is coiled and arranged axially inside the thermal insulation body. One end of the thermal insulation body is sealed and fixedly connected to the outer tube assembly, and the other end is sealed and fixedly connected to the inner tube assembly. The inner connector is located at one end of the thermal insulation body near the inner tube assembly, and the outer connector is located at one end of the thermal insulation body near the outer tube assembly. The wire, the inner connector, the wire, and the outer connector are electrically connected in sequence.

[0018] In some alternative embodiments, the vacuum insulated bottle further includes a heat-conducting component disposed within the inner tube assembly and located between the two heat-absorbing components, for housing the circuit board;

[0019] The heat-conducting component includes a heat-conducting shell and multiple heat-conducting blocks. The outer wall of the heat-conducting shell is provided with a heat insulation layer that is isolated from the inner tube assembly. The multiple heat-conducting blocks are disposed inside the heat-conducting shell and are in contact with the circuit board and the heat-conducting shell, respectively, for conducting the heat generated by the circuit board to the heat-absorbing component.

[0020] A vacuuming method for a reusable vacuum insulation device, using any of the aforementioned reusable vacuum insulation devices, includes the following steps:

[0021] S1: Assemble the electronic components inside the inner tube assembly, and arrange the heat-absorbing components at both ends of the inner tube assembly; place the inner tube assembly inside the outer tube assembly, so that the wire passes through the heat-absorbing component near the open end and is electrically connected to the heat-insulating connection assembly, and the heat-insulating connection assembly is sealed to the inner tube assembly and the outer tube assembly respectively; seal and install the vacuum gauge and the suction canister at the closed end;

[0022] S2: Seal one end of the first connecting mechanism and the second connecting mechanism in the vacuuming device to the vacuuming drive assembly, and seal the other end to the corresponding first sealing joint and second sealing joint, respectively. Adjust the first sealing joint and the second sealing joint to the open state through the first connecting mechanism and the second connecting mechanism.

[0023] S3: Activate the vacuum drive assembly to evacuate the space between the inner tube assembly and the outer tube assembly to form the vacuum chamber; when the vacuum gauge detects that the vacuum degree of the vacuum chamber reaches the working requirement range, adjust the first sealing joint and the second sealing joint to the sealing state, and remove the vacuum pumping device.

[0024] S4: Put the vacuum thermos bottle into operation. During operation, the vacuum degree of the vacuum chamber of the vacuum thermos bottle is detected in real time by the vacuum gauge, and the suction can is used to absorb the gas generated in the vacuum chamber under high temperature environment.

[0025] When the vacuum gauge detects that the vacuum level has dropped below the first safety threshold but is still above the second safety threshold, the vacuum thermos bottle is retrieved to the ground and the suction canister is replaced under sealed conditions.

[0026] When the vacuum gauge detects that the vacuum level has dropped below the second safety threshold, the vacuum insulation device is retrieved to the ground. The first and second connecting mechanisms of the vacuum pumping device are reconnected to the corresponding first and second sealing joints. The first and second sealing joints are adjusted to the open state through the first and second connecting mechanisms. The vacuum chamber is repeatedly evacuated until the vacuum level of the vacuum chamber returns to the required range. The first and second sealing joints are then adjusted to the sealed state, and the vacuum pumping device is removed. After that, the vacuum insulation bottle is put into operation.

[0027] S5: Repeat step S4 until the vacuum insulated bottle has completed its work.

[0028] The beneficial effects of this invention are:

[0029] This invention provides a heat-insulating device and its vacuuming method capable of repeated vacuuming, used to house electronic components including circuit boards and wires. The device includes a vacuum insulated bottle and a vacuuming apparatus. A detachable sealed connection is achieved between the outer tube assembly and the vacuuming apparatus via a first and second sealing joint, which can switch between open and sealed states to form and maintain a vacuum chamber. A vacuum gauge is installed on the outer tube assembly to monitor the vacuum level in real time, and at least one replaceable suction can is arranged to absorb gas released from the material, enhancing vacuum retention capability. Multiple first sealing joints are evenly arranged at the open end of the outer tube assembly to shorten the distance between any point in the chamber and the suction port, increasing the suction rate and improving vacuum uniformity. A heat-insulating connection assembly provides a sealed and heat-insulating connection between the inner and outer tubes, while also providing electrical connection between the wires and external devices, blocking external heat conduction. Heat-absorbing components are installed at both ends of the electronic components to absorb residual heat, further reducing the impact of high temperatures on the electronic components. It effectively enables repeated vacuuming of vacuum insulated bottles, shortens vacuuming time, improves vacuum uniformity, enhances vacuum retention capacity, and effectively insulates and protects electronic components, thereby significantly improving the reliability of exploration instruments under extreme temperature conditions and the thermal stability of long-term continuous operation, while reducing equipment operating costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the heat preservation device capable of repeated vacuuming described in this invention;

[0031] Figure 2 This is a cross-sectional view of the heat preservation device capable of repeated vacuuming described in this invention;

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 yes Figure 2 Enlarged view at point B in the middle;

[0034] Figure 5 This is a cross-sectional view of the first heat-absorbing component described in this invention;

[0035] Figure 6 This is a cross-sectional view of the second heat-absorbing component described in this invention;

[0036] Figure 7 This is an assembly diagram of the heat-conducting components and the circuit board described in this invention;

[0037] Figure 8 This is a cross-sectional view of the thermal insulation connection assembly described in this invention;

[0038] Figure 9 This is a schematic diagram of the open end cap described in this invention;

[0039] Figure 10 This is a schematic diagram of the closed end cap described in this invention;

[0040] Figure 11 This is a schematic diagram of the vacuum pumping device described in this invention.

[0041] In the picture:

[0042] 1. Vacuum insulated bottle;

[0043] 11. Inner tube assembly; 111. Inner tube; 112. Inner tube end cap; 113. Inner tube support ring;

[0044] 12. Outer tube assembly; 121. Outer tube; 122. Open end cap; 1221. First through hole; 1222. First annular boss; 123. Closed end cap; 1231. Second through hole; 1232. Third through hole; 1233. Second annular boss;

[0045] 13. First sealing joint; 131. First limiting protrusion; 132. First sealing ring; 133. Second sealing ring; 134. Suction channel; 135. Suction through hole;

[0046] 14. Second sealing joint;

[0047] 15. Thermal insulation connection assembly; 151. Thermal insulation body; 152. Wire; 153. Internal connector; 154. External connector;

[0048] 16. Heat-absorbing component; 161. First heat-absorbing component; 1611. Outer conduit for wiring; 1612. Inner conduit for wiring; 1613. End cap for wiring;

[0049] 162. Second heat-absorbing component; 1621. No conduit; 1622. No end cap;

[0050] 17. Vacuum gauge;

[0051] 18. Suction can; 181. Canister body; 182. Canister plug; 183. Third sealing ring; 184. Fourth sealing ring; 185. Vent hole;

[0052] 19. Thermal conductive component; 191. Thermal conductive housing; 192. Thermal conductive block;

[0053] 2. Vacuum pumping device;

[0054] 21. First connecting mechanism;

[0055] 211, First intake tube assembly; 2111, First connecting rod; 2111a, Connecting protrusion; 2112, Second connecting rod;

[0056] 212. Linkage drive assembly; 2121. First air extraction pipe connector; 2122. Linkage base; 2122a. Linkage base housing; 2122b. Linkage base end cap; 2123. Adapter plate; 2124. Support rod;

[0057] 213. First extraction pipe;

[0058] 22. Second connecting mechanism; 221. Second suction pipe; 222. Second suction pipe connector; 223. Suction connecting rod;

[0059] 23. Vacuum drive assembly; 231. Vacuum pressure adapter; 232. Vacuum tee connector; 233. Pressure gauge;

[0060] 3. Circuit board; 4. Support frame. Detailed Implementation

[0061] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0062] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0063] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection via an intermediate medium; or the internal communication of two components or the interaction between two components. As examples, a direct connection refers to two parts or components being connected together without the need for an intermediate medium, while an indirect connection refers to two parts or components each being connected to at least one intermediate medium, with the connection achieved through the intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0065] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0066] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0067] In this invention, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientations or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, in the context, it should be understood that when an element is mentioned as being "upper" or "lower" than another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as "upper side," "lower side," "left side," "right side," "front side," and "rear side" not only represent positive orientation but can also be understood as lateral orientation. For example, "above," "on top of," "upper side of," and "above" the first feature "above" or "on the second feature" includes the first feature being directly above, to the upper left, to the upper right, to the upper front, and to the upper rear of the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The terms "below," "under," "below," and "below" for "first feature" and "second feature" include situations where the first feature is directly below, to the lower left, to the lower right, in front of, or behind the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0068] Please refer to Figures 1 to 11As shown, this embodiment provides a heat preservation device capable of repeated vacuuming for housing electronic components including a circuit board 3 and wires, comprising a vacuum thermos flask 1 and a vacuuming device 2; wherein the vacuum thermos flask 1 includes an inner tube assembly 11, an outer tube assembly 12, and a heat insulation connection assembly 15; the outer tube assembly 12 is a sealed cavity with at least one open end and the rest being closed ends; a plurality of first sealing joints 13 are evenly spaced around the central axis of the outer tube assembly 12 at the open end, and the annular area formed therein is sealed to one end of the heat insulation connection assembly 15, and a second sealing joint 14 is provided at the central axis position of the closed end, and both the first sealing joints 13 and the second sealing joint 14 can be switched between an open state and a sealed state; the inner tube assembly 11 is placed inside the outer tube assembly 12, and its end near the open end is connected to the heat insulation connection assembly 15. The other end of component 15 is sealed, and the end away from the open end is a closed end; the electronic component is placed inside the inner tube component 11, and heat-absorbing components 16 are respectively provided at both ends of the component. The wire passes through the heat-absorbing component 16 near the open end and is electrically connected to the heat-insulating connection component 15; the vacuum gauge 17 and at least one replaceable suction canister 18 can be selectively sealed and installed at the open end or the closed end; the vacuum device 2 includes a first connecting mechanism 21, a second connecting mechanism 22 and a vacuum driving component 23; one end of the first connecting mechanism 21 and the second connecting mechanism 22 are respectively connected to the vacuum driving component 23, and the other end is detachably and sealed to the first sealing joint 13 and the second sealing joint 14, respectively, for simultaneously switching the state of each sealing joint and evacuating the inner tube component 11 and the outer tube component 12 to form a vacuum chamber.

[0069] The vacuum pumping device 2 and the vacuum thermos bottle 1 are detachably sealed together via a first sealing joint 13 and a second sealing joint 14 located on the outer tube assembly 12. The first sealing joint 13 and the second sealing joint 14 can switch between an open state and a sealed state. When both are in the open state, the vacuum pumping device 2 can evacuate the space between the outer tube assembly 12 and the inner tube assembly 11 to form a vacuum chamber. When the vacuum thermos bottle 1 is working normally, both are in a sealed state. The vacuum chamber formed effectively isolates the high-temperature environment of the deep strata, thereby protecting the electronic components arranged in the inner tube assembly 11 from the effects of high temperature and ensuring their continuous and stable operation.

[0070] To monitor the vacuum level of the vacuum chamber in real time and prevent heat damage to internal electronic components due to vacuum decay, a vacuum gauge 17 is sealed and installed at either end of the outer tube assembly 12 to monitor changes in vacuum level. Since the vacuum insulated bottle 1 is exposed to a high-temperature environment for extended periods, its material gradually releases gas, causing vacuum decay. To address this issue, at least one replaceable suction canister 18 is sealed and installed on the outer tube assembly 12 to absorb the released gas, enhancing vacuum retention capacity. This canister can be replaced after prolonged use. When the vacuum level drops below a certain safety threshold, the vacuum insulated bottle 1 can be retrieved from the well to the surface, resealed and connected to the vacuum pumping device 2, and the first sealing joint 13 and the second sealing joint 14 are switched to the open state. The vacuum pumping operation is repeated until the vacuum level returns to the required range, allowing the vacuum insulated bottle 1 to be used again. This structural design enables the vacuum insulated bottle 1 to be repeatedly vacuumed and reused, extending its service life and effectively reducing the overall operating cost of the equipment.

[0071] Multiple first sealing joints 13 are evenly arranged circumferentially along the central axis of the open end of the outer tube assembly 12, which greatly shortens the distance between any point in the vacuum chamber and the nearest extraction port, effectively improving the extraction process rate and significantly improving the uniformity of extraction in the vacuum chamber, thus shortening the time required for vacuuming. The number of first sealing joints 13 may be, but is not limited to, five, six, or eight.

[0072] Since the wires of the electronic components need to be led out from the open end of the outer tube assembly 12, to prevent heat from being transferred into the interior through the wire interface, a heat-insulating connection assembly 15 is installed between the open end of the outer tube assembly 12 and the end of the inner tube assembly 11 near the open end to achieve a sealed and heat-insulating connection between the two. External equipment is connected to the wires through the heat-insulating connection assembly 15, further blocking the conduction of external heat. At the same time, heat-absorbing components 16 are installed at both ends of the electronic components to absorb residual heat in the vacuum chamber, further reducing the impact of residual heat on the electronic components and effectively suppressing the conduction of external heat into the interior. Through the above-mentioned multiple heat insulation and heat absorption designs, it can be ensured that the electronic components maintain a stable working state in high-temperature environments, greatly improving the reliability of the exploration instrument under extreme temperature conditions and meeting its thermal stability requirements for long-term continuous operation.

[0073] In summary, this insulation equipment can achieve repeated vacuuming, reducing the cost of using the vacuum insulated bottle 1, shortening the vacuuming time, improving the uniformity of the vacuum layer and enhancing the vacuum holding capacity; at the same time, it effectively reduces the conduction of external heat to the interior, ensuring the stable operation of electronic components under high temperature conditions, thereby significantly improving the reliability of exploration instruments in extreme environments and meeting the thermal stability requirements of long-term continuous operation.

[0074] Combination Figure 2 , Figure 3 and Figure 9 As shown, specifically, the outer tube assembly 12 includes an outer tube 121 and an open end cap 122 that is sealed to the end of the outer tube 121; the open end cap 122 has a first through hole 1221 that seals with the first sealing joint 13, the diameter of which gradually decreases along the direction close to the vacuum chamber; the first sealing joint 13 has sealing sections with successively decreasing outer diameters along the direction close to the vacuum chamber, and a first sealing ring 132 and a second sealing ring 133 are arranged at intervals in sequence; the first sealing joint 13 reciprocates along the axial direction of the outer tube assembly 12; an air intake channel 134 is provided inside the first sealing joint 13 along its length, and an air intake through hole 135 communicating with the vacuum chamber is provided on the side wall between the first sealing ring 132 and the second sealing ring 133. When the vacuum thermos flask 1 is working normally, the first sealing joint 13 is in a sealed state. Pushing the first sealing joint 13 towards the vacuum chamber causes the first sealing ring 132 and the second sealing ring 133 to seal against the wall of the first through hole 1221. This isolates the suction channel 134 and its suction port 135 inside the first sealing joint 13 from the vacuum chamber, ensuring the vacuum chamber remains completely sealed and does not leak pressure, allowing the electronic components to operate stably in a high-vacuum insulation environment. When vacuuming is required, the first sealing joint 13 switches to the open state. Moving the first sealing joint 13 away from the vacuum chamber, it is moved to a position where only the first sealing ring 132 maintains a sealing fit, and the second sealing ring 133 is moved to a position where it seals against the wall of the first through hole 1221. With the borehole wall not sealed, the suction port 135 is exposed to the internal space of the first through hole 1221, allowing the vacuum chamber, suction channel 134, and suction port 135 to communicate with each other and form a gas passage with the external vacuum pumping device 2. This allows the vacuum pumping device 2 to remove the gas from the vacuum chamber through the suction channel 134, restoring a high vacuum state. When the vacuum degree reaches the required range, the first sealing joint 13 is pushed back along the direction close to the vacuum chamber, causing the first sealing ring 132 and the second sealing ring 133 to press against the borehole wall simultaneously, completely sealing the suction port 135 again. This restores the vacuum chamber to a fully sealed state, completing the operation of re-vacuuming the vacuum thermos bottle 1 after the vacuum degree has decreased. This allows the vacuum thermos bottle 1 to be put back into use and can be put back into the well for work.

[0075] By employing a double-sealing structure, the first connecting mechanism 21 of the vacuum pumping device 2 can be sealed and connected to the first sealing joint 13 firstly, and then the first sealing joint 13 can be switched to the open state. During the switching process, at least one level of seal remains effective, thereby preventing premature depressurization of the vacuum chamber or the entry of external gas, effectively reducing internal vacuum loss. In this way, once the suction port 135 is opened, the vacuum pumping device 2 can start working immediately without handling additional air. This allows the pumping task to focus on the release of gas from the material rather than re-vacuuming the entire vacuum chamber, thereby significantly reducing the pumping volume, shortening the vacuuming time, and improving the overall vacuuming efficiency.

[0076] Optionally, a plurality of air intake holes 135 are uniformly provided on the side wall between the first sealing ring 132 and the second sealing ring 133 along the circumference of the first sealing joint 13. There may be four, five or six holes, and the number is not specifically limited.

[0077] In some optional embodiments, a boss structure is provided inwardly on the wall of the first through hole 1221 near the vacuum chamber, and the diameter of the hole segment corresponding to the boss structure is smaller than the inner diameter of its outer hole segment. The first sealing ring 132 always maintains a sealed fit with the hole segment outside the boss structure, while the second sealing ring 133 can selectively seal with the hole segment where the boss structure is located. When the first sealing joint 13 moves away from the vacuum chamber, the second sealing ring 133 disengages from the boss structure, exposing the suction hole arranged between the first sealing ring 132 and the second sealing ring 133, and communicating with the vacuum chamber, thereby forming a vacuuming channel.

[0078] In other embodiments, the first through hole 1221 may be designed as a tapered structure with openings at both ends along the axis, and its diameter gradually increases from the end closer to the vacuum cavity to the end farther away from the vacuum cavity, matching the sealing section of the first sealing joint 13.

[0079] To prevent excessive force from the operator or assembly equipment, which could cause excessive movement of the sealing joint and damage the vacuum thermos flask 1, in this embodiment, the first sealing joint 13 extends from the side of the first through hole 1221 away from the vacuum cavity and abuts against the outer surface of the open end cap 122. The outer wall of the first sealing joint 13 is provided with a first limiting protrusion 131. The first through hole 1221 is provided with a first annular boss 1222 at the end of the hole away from the vacuum cavity, which cooperates with the first limiting protrusion 131 to limit the movement distance of the first sealing joint 13 towards the vacuum cavity. The first annular boss 1222 forms a mechanical stop. When the first sealing joint 13 is pushed towards the vacuum cavity, the stop restricts its further movement, ensuring that the first sealing joint 13 stays in the predetermined position when it is in the sealing position, so that the first sealing ring 132 and the second sealing ring 133 are pressed against the hole wall at the same time. In addition, the first sealing joint 13 extends from the side of the first through hole 1221 away from the vacuum cavity and can abut against the outer surface of the open end cap 122, providing a gripping position for the operator, making operation easier, and also preventing the first sealing joint 13 from being embedded in the first through hole 1221 and unable to be pulled out.

[0080] Combination Figure 2 , Figure 4 and Figure 10 As shown, the outer tube assembly 12 also includes a closed end cap 123 sealed to the end of the outer tube 121. A second through hole 1231 is provided at the central axis position of the closed end cap 123, and the second sealing joint 14 is sealed to the second through hole 1231. The structure of the second sealing joint 14 is the same as that of the first sealing joint 13, and the structure of the second through hole 1231 is also the same as that of the first through hole 1221. Its working process is also the same as that of the first sealing joint 13, so it will not be described again. The first connecting mechanism 21 and the second connecting mechanism 22 of the vacuum pumping device 2 can be detachably and sealed to the corresponding sealing joints, and simultaneously switch the state of each sealing joint and evacuate the space between the inner tube assembly 11 and the outer tube assembly 12 to form a vacuum chamber. Since the closed end cap 123 does not need to pass through a wire, a second sealing joint 14 is provided at its central axis position, which effectively reduces the heat transfer path and enables uniform evacuation.

[0081] It should be noted that the two ends of the outer tube assembly 12 can be configured according to actual working needs. When the electronic components only need to be installed with wires from one side and led out from that side, one end of the outer tube assembly 12 can be set as an open end cap 122 and the other as a closed end cap 123. In the high temperature and high pressure environment downhole, this design can reduce the heat transfer path and improve the heat insulation performance. When wires need to be led out from both ends, both ends of the outer tube assembly 12 can be set as open end caps 122. This design offers greater assembly flexibility, faster vacuuming speed, and is suitable for long-distance logging tools, etc.

[0082] Since all parts of the outer tube 121 have the same diameter, the open end cap 122 and the closed end cap 123 can be used interchangeably. Operators can set one end as the open end cap 122 or the closed end cap 123 at any time according to the actual working conditions. The assembly is more flexible and adaptable, which allows for quick replacement or interchange during maintenance and can also save costs.

[0083] like Figure 2 As shown, specifically, the inner tube assembly 11 includes an inner tube 111; when both ends of the outer tube assembly 12 are open end caps 122, the two ends of the inner tube 111 are detachably fixed and sealed to the open end caps of the outer tube 121 through the heat insulation connection assembly 15; when one end of the outer tube assembly 12 is an open end cap 122 and the other end is a closed end cap 123, the end of the inner tube 111 near the closed end cap 123 is provided with an inner tube end cap 112, which is detachably and sealed to the end of the inner tube 111.

[0084] Furthermore, when one end of the outer tube assembly 12 is a closed end cap 123, at least one inner tube support ring 113 is provided inside the cavity of the outer tube assembly 12, and the inner tube assembly 11 is detachably fixed to the inner tube support ring 113 so that the inner tube assembly 11 is maintained in a predetermined position along the axial direction of the outer tube assembly 12 and radial movement is prevented. The inner tube assembly 11 and the inner tube support ring 113 can be connected by threaded connection or snap-fit, which is not limited here.

[0085] like Figure 2 and Figure 11As shown, in some embodiments, the first connecting mechanism 21 includes multiple first suction pipe assemblies 211, a linkage drive assembly 212, and a first suction pipe 213. One end of each of the multiple first suction pipe assemblies 211 is detachably and sealedly connected to a plurality of first sealing joints 13, and the other end is connected to the linkage drive assembly 212. The linkage drive assembly 212 can simultaneously drive the multiple first suction pipe assemblies 211 to operate synchronously and perform suction at the same time. One end of the first suction pipe 213 is connected to the linkage drive assembly 212, and the other end is sealedly connected to the suction drive assembly 23 for evacuating the vacuum chamber. Through the detachable and sealed connection between the first suction pipe assemblies 211 and the first sealing joints 13, the vacuum chamber at the location of the multiple first sealing joints 13 can be locally evacuated at the same time, ensuring that the suction passage at each sealing position is independent and balanced, thereby improving the overall suction uniformity of the vacuum chamber. The linkage drive assembly 212 can synchronously drive multiple first suction pipe assemblies 211, enabling simultaneous multi-channel pumping, significantly shortening the total pumping time and improving overall vacuuming efficiency. After the first suction pipe assembly 211 is connected to the first sealing joint 13 to form a rigid sealing connection, the linkage drive assembly 212 can drive multiple first suction pipe assemblies 211 and their corresponding first sealing joint 13 assemblies to move synchronously along the axial direction of the outer pipe assembly 12, realizing simultaneous switching of the state of the first sealing joint 13. The multiple pumping paths output by the linkage drive assembly 212 are uniformly collected through the first pumping pipe 213 and guided to the pumping drive device, which not only simplifies the pipeline layout but also makes operation simple and allows for repeated and efficient vacuuming operations.

[0086] Specifically, the linkage drive assembly 212 includes a first suction pipe connector 2121, a linkage base 2122, an adapter plate 2123, and a support connecting rod 2124; the first suction pipe assembly 211 includes a first connecting rod 2111 and a second connecting rod 2112; wherein, the linkage base 2122, the first suction pipe connector 2121, and the first suction pipe 213 are sequentially and sealed in connection, and the linkage base 2122 is provided with a linkage cavity inside; and multiple first sealing connectors 13 and first connecting rods 211 are positioned corresponding to each other. 1. The second connecting rod 2112 is sequentially and sealed along the axial direction of the outer tube assembly 12, and is sealed and connected to the linkage cavity inside the linkage base 2122 to form an air extraction passage; multiple first connecting rods 2111 pass through the adapter plate 2123 and are fixedly connected to the adapter plate 2123; one end of the support connecting rod 2124 is fixedly connected to the adapter plate 2123, and the other end passes through the central area enclosed by multiple first connecting rods 2111 and is fixedly connected to the linkage base 2122; wherein, the first connecting rods 2111, the second connecting rod 2112 ... The two connecting rods 2112, the adapter plate 2123, the support connecting rod 2124, the linkage base 2122, the first evacuation pipe connector 2121, and the first evacuation pipe 213 are assembled in sequence to form an evacuation passage. When it is necessary to evacuate the vacuum thermos bottle 1, the multiple first connecting rods 2111 are sealed and connected to the corresponding first sealing connectors 13. Then, the operator only needs to move the linkage base 2122 away from the vacuum chamber along the axis of the outer tube assembly 12 to simultaneously drive the multiple first sealing connectors 13 to move and open them. At this time, the vacuum chamber is evacuated, and the gas in each local evacuation passage is collected in the linkage chamber and transferred to the first evacuation pipe 213 by the first evacuation pipe connector 2121. The gas is then uniformly guided to the evacuation drive device to start the evacuation operation. After the evacuation is completed, the linkage base 2122 is moved closer to the vacuum chamber along the axis of the outer tube assembly 12 to seal the first sealing connectors 13 and restore the vacuum chamber to a fully sealed state. The above design allows multiple first sealing joints 13 to open or close simultaneously, each local air extraction passage to be independent and balanced, and the linkage cavity to gather multiple airflows, thereby improving the overall vacuuming efficiency. Furthermore, the operator only needs to push or pull the linkage base 2122 along the axis to drive multiple first sealing joints 13 to switch states synchronously, without the need for manual operation one by one, resulting in good repeatability and high efficiency.

[0087] Optionally, a limiting groove is provided at the connection between the first connecting rod 2111 and the adapter plate 2123, and the adapter plate 2123 is fixedly installed in the limiting groove of the first connecting rod 2111, so that the two are relatively fixed. One end of the supporting connecting rod 2124 abuts against the side of the adapter plate 2123 near the vacuum thermos bottle 1, and the other end passes through the adapter plate 2123 and is fixedly connected to the linkage base 2122.

[0088] In some optional embodiments, the linkage base 2122 includes a linkage base housing 2122a and a linkage base end cap 2122b, which are detachably and sealingly connected and enclose to form a linkage cavity; the first air extraction pipe connector 2121 is sealed to the linkage base housing 2122a. This structure not only ensures the sealing of the linkage cavity and the reliable conduction of the air extraction passage, but also facilitates maintenance by removing the end cap when components are damaged or the cavity needs cleaning, without having to replace the entire linkage base 2122, thereby improving the ease of maintenance and service life of the equipment.

[0089] Optionally, an L-shaped groove is provided on the inner wall of the end of the first sealing joint 13 away from the vacuum chamber, and a connecting protrusion 2111a is provided on the outer wall of the connecting end of the first connecting rod 2111 and the first sealing joint 13. The connecting protrusion 2111a is detachably connected to the L-shaped groove. When the connecting protrusion 2111a is inserted into the inlet position of the L-shaped groove and rotated, a locking structure is formed, which keeps the first connecting rod 2111 and the first sealing joint 13 in a fixed position in the axial direction, preventing loosening or falling off during operation or evacuation. When disassembly is required, the operator only needs to rotate the connecting protrusion 2111a in the opposite direction to the inlet position to quickly disassemble, which is simple and reliable.

[0090] Combination Figure 2 , Figure 4 and Figure 10As shown, in some optional embodiments, the outer tube assembly 12 further includes a closed end cap 123. The closed end cap 123 has multiple third through holes 1232 circumferentially opened around the central axis of the outer tube assembly 12 for sealing and installing the vacuum gauge 17 and the suction can 18. The suction can 18 includes a can body 181 and a removable can plug 182. The can body 181 contains a getter. Its outer wall has holes of the same diameter and is spaced apart with third sealing rings 183 and fourth sealing rings 184 along the direction close to the vacuum cavity. A vent hole 185 is opened on the side wall of the can body 181 between the two to communicate with the vacuum cavity. The third through holes 1232 have sealing sections with progressively larger diameters along the direction close to the vacuum cavity. The can body 181 can reciprocate axially along the third through holes 1232. 183 is always sealed to the bore wall, while the fourth sealing ring 184 can selectively seal to the bore wall. When the tank 181 moves axially towards the side closer to the vacuum chamber along the third through hole 1232 until the fourth sealing ring 184 is in the larger diameter section and does not contact the bore wall, the fourth sealing ring 184 always forms a seal with the bore wall. Gas in the vacuum chamber enters the tank 181 through the vent hole 185 and is absorbed by the getter inside the tank 181. When the tank 181 moves axially away from the vacuum chamber along the third through hole 1232 to prepare to replace the getter inside the tank 181, the third sealing ring enters the smaller diameter section, and both the third sealing ring 183 and the fourth sealing ring 184 contact the bore wall to form a seal, ensuring that the outer tube assembly 12 is in a sealed state. Specifically, on the outer wall of the tank 181 between the third sealing ring 183 and the fourth sealing ring 184, a plurality of vent holes 185 are provided along the circumference of the tank 181. The number of vent holes 185 may be, but is not limited to, four, five or six.

[0091] Furthermore, the open end cap 122 typically requires the integration of multiple first sealing joints 13 and thermal insulation connection components 15, which limits its usable space. Continuing to install vacuum gauges 17 and suction canisters 18 on the open end cap 122 would easily lead to space congestion and increased installation complexity. By creating a third through hole 1232 circumferentially on the closed end cap 123 for installing the vacuum gauge 17 and suction canister 18, functional zoning is effectively achieved. This not only improves the flexibility of component placement but also enhances space utilization in the end cap area, avoids structural interference, reduces assembly difficulty, and improves overall sealing reliability.

[0092] In order to limit the movement range of the tank 181, a second annular boss 1233 is provided on the side of the third through hole 1232 away from the wall of the vacuum chamber. A second limiting protrusion is provided on the outer side wall of the tank 181 away from the vacuum chamber. The second limiting protrusion cooperates with the second annular boss 1233 to limit the movement of the tank 181 along the axial direction and prevent it from being over-displaced.

[0093] In some embodiments, the second connecting mechanism 22 includes a second suction pipe 221, a second suction pipe connector 222, and a suction rod 223. The second sealing connector 14, the suction rod 223, the second suction pipe connector 222, and the second suction pipe 221 are sequentially and sealingly connected. The other end of the second suction pipe 221 is connected to the suction drive assembly 23, thereby allowing air to be drawn from the closed end of the outer pipe assembly 12 through the aforementioned connecting assembly. The suction rod 223 is detachably and sealingly connected to the second sealing connector 14; the specific connection method is the same as that between the first sealing connector 13 and the first connecting rod 2111, and will not be described in detail here.

[0094] like Figure 8 As shown, in some optional embodiments, the thermal insulation connection assembly 15 includes a thermal insulation body 151, a wire 152, an inner connector 153, and an outer connector 154. The thermal insulation body 151 is made of insulating and thermally insulating material. The wire 152 is coiled and arranged axially inside the thermal insulation body 151. One end of the thermal insulation body 151 is sealed and fixedly connected to the outer tube assembly 12, and the other end is sealed and fixedly connected to the inner tube assembly 11. The inner connector 153 is located at the end of the thermal insulation body 151 near the inner tube assembly 11, and the outer connector 154 is located at the end of the thermal insulation body 151 near the outer tube assembly 12. The wire, the inner connector 153, the wire 152, and the outer connector 154 are electrically connected in sequence. The heat insulation body 151 is made of insulating and heat-insulating material, forming a thermal insulation layer between the outer tube assembly 12 and the inner tube assembly 11, effectively preventing high temperature conduction from affecting the internal electronic components. The wire 152 is coiled inside the heat insulation body 151, increasing the path length of the wire 152 and reducing heat conduction along the wire 152, thus improving the heat insulation effect. The inner connector 153 and the outer connector 154 are respectively located near one end of the inner tube assembly 11 and the outer tube assembly 12. The wire 152 is electrically connected to the two ends inside the heat insulation body 151, realizing a safe and reliable electrical path. The coiled wire 152 design avoids the wire 152 being too tight or too short, ensuring connection stability and adapting to the long-term high-temperature working environment of the equipment.

[0095] For example, the insulation 151 may be, but is limited to, materials such as ceramic or fiberglass.

[0096] like Figure 5 and Figure 6As shown, in some optional embodiments, the heat-absorbing assembly 16 includes a first heat-absorbing assembly 161 disposed near the open end of the inner tube assembly 11, and a second heat-absorbing assembly 162 disposed near the closed end of the inner tube assembly 11. The first heat-absorbing assembly 161 includes an outer wire-passing tube 1611 and an inner wire-passing tube 1612 placed therein, both with wire-passing end caps 1613 at their ends, forming a sealed cavity filled with heat-absorbing agent. The inner wire-passing tube 1612 is used to accommodate the wire. One end of the first heat-absorbing assembly 161 near the heat-insulating connection assembly 15 is detachably and fixedly connected to the heat-insulating connection assembly 15. The second heat-absorbing assembly 162 includes a wire-free tube 1621, with wire-free end caps 1622 at both ends forming a sealed cavity, which is also filled with heat-absorbing agent. The first heat-absorbing assembly 161 and the second heat-absorbing assembly 162 can effectively absorb residual heat within the vacuum cavity, reducing the impact of high temperature on the inner tube assembly 11 and the internal electronic components, thereby ensuring the thermal stability of the electronic components. The first heat-absorbing component 161 is located near the opening end and adjacent to the heat-insulating connection component 15, ensuring good heat absorption even when the wire is connected to an external circuit via the heat-insulating connection component 15, thus achieving a balance between thermal management and electrical connection functions. Furthermore, the end of the first heat-absorbing component 161 near the heat-insulating connection component 15 is detachably and fixedly connected to the heat-insulating connection component 15, making the connection between the wire and the heat-insulating connection component 15 more secure. Specifically, the first heat-absorbing component 161 and the heat-insulating connection component 15 can be fixedly connected by bolts.

[0097] like Figure 7 As shown, in some embodiments, the vacuum insulated bottle 1 further includes a heat-conducting component 19, disposed within the inner tube assembly 11 and located between two heat-absorbing components 16, for housing the circuit board 3. The heat-conducting component 19 includes a heat-conducting shell 191 and multiple heat-conducting blocks 192. The outer wall of the heat-conducting shell 191 is provided with a heat-insulating layer that isolates it from the inner tube assembly 11. The multiple heat-conducting blocks 192 are disposed inside the heat-conducting shell 191 and respectively contact the circuit board 3 and the heat-conducting shell 191, for conducting the heat generated by the circuit board 3 to the heat-absorbing components 16. The heat-conducting blocks 192 rapidly conduct the heat generated by the circuit board 3 to the heat-conducting shell 191, and then from the heat-conducting shell 191 to the heat-absorbing components 16 at both ends, effectively guiding the heat generated by the circuit board 3 to the heat-absorbing components 16 for final absorption or dissipation. Through this thermal management path, the heat-conducting component 19 can maintain the circuit board 3 within a safe operating temperature range, preventing performance degradation or damage to electronic components due to high temperatures, thereby preventing localized overheating of the circuit board 3 and improving the thermal stability and long-term reliability of the electronic components.

[0098] Furthermore, a support frame 4 is installed inside the heat pipe to provide a reliable fixed mounting position for the circuit board 3, allowing the circuit board 3 to be detachably and fixedly connected to the support frame 4, and connected to the heat-conducting housing 191 via the heat-conducting block 192. The support frame 4 can firmly support the circuit board 3, keeping it in a stable position axially and radially inside the vacuum insulated bottle 1, preventing the circuit board 3 from moving during vibration or transportation, thereby ensuring the safety of the electronic components. Specifically, bolts can be used to sequentially pass through the heat-conducting housing 191, the heat-conducting block 192, and the circuit board 3 to fix them to the support frame 4, so that the heat-conducting housing 191, the heat-conducting block 192, and the circuit board 3 are in contact with each other, achieving reliable mechanical fixation and efficient heat conduction, while facilitating disassembly and maintenance.

[0099] like Figure 11 As shown, in some embodiments, the vacuum pumping drive assembly 23 includes a vacuum pump, a vacuum pumping pressure-bearing adapter 231, a vacuum pumping tee connector 232, and a pressure gauge 233. The first vacuum pipe 213 and the second vacuum pipe 221 are respectively sealed and connected to the two input ports of the vacuum pumping tee connector 232. The output end of the vacuum pumping tee connector 232 is connected to the vacuum pumping pressure-bearing adapter 231, which is connected to the vacuum pump's suction port. The pressure gauge 233 is installed at the pressure measuring interface of the vacuum pumping pressure-bearing adapter 231 to detect pressure changes during the vacuuming process in real time. During operation, the vacuum pump simultaneously or selectively evacuates the vacuum chamber connected by the first vacuum pipe 213 and the second vacuum pipe 221 through the vacuum pumping pressure-bearing adapter 231 and the vacuum pumping tee connector 232. The pressure gauge 233 synchronously monitors the system pressure, thereby realizing the vacuuming of the vacuum chamber and the determination of the vacuum degree.

[0100] In any of the above embodiments, the sealing connection method can be a sealing ring connection, and there is no specific limitation. Specifically, the sealing ring can be, but is not limited to, a silicone ring, and there is no limitation.

[0101] This embodiment also provides a vacuuming method for a heat preservation device that can be repeatedly vacuumed. Using the heat preservation device that can be repeatedly vacuumed in any of the above embodiments, the method includes the following steps:

[0102] S1: Assemble the electronic components inside the inner tube assembly 11, and arrange heat-absorbing components 16 at both ends of the inner tube assembly 11; place the inner tube assembly 11 inside the outer tube assembly 12, so that the wires pass through the heat-absorbing components 16 near the open end and are electrically connected to the heat-insulating connection assembly 15, and the heat-insulating connection assembly 15 is sealed to the inner tube assembly 11 and the outer tube assembly 12 respectively; seal and install the vacuum gauge 17 and the suction canister 18 at the closed end;

[0103] S2: Seal one end of the first connecting mechanism 21 and the second connecting mechanism 22 in the vacuum device 2 to the vacuum drive assembly 23, and seal the other end to the corresponding first sealing joint 13 and second sealing joint 14. Adjust the first sealing joint 13 and the second sealing joint 14 to the open state through the first connecting mechanism 21 and the second connecting mechanism 22.

[0104] S3: Start the vacuum drive assembly 23 to evacuate the space between the inner tube assembly 11 and the outer tube assembly 12 to form a vacuum chamber; when the vacuum gauge 17 detects that the vacuum degree of the vacuum chamber has reached the working requirement range, adjust the first sealing joint 13 and the second sealing joint 14 to the sealing state, and remove the vacuum pumping device 2.

[0105] S4: Put the vacuum thermos bottle 1 into operation. During the operation, the vacuum degree of the vacuum chamber of the vacuum thermos bottle 1 is detected in real time by the vacuum gauge 17, and the suction can 18 is used to absorb the gas generated in the vacuum chamber under high temperature environment.

[0106] When the vacuum gauge 17 detects that the vacuum level has dropped below the first safety threshold but is still above the second safety threshold, the vacuum thermos bottle 1 is retrieved to the ground and the suction canister 18 is replaced under sealed conditions.

[0107] When the vacuum gauge 17 detects that the vacuum level has dropped below the second safety threshold, the vacuum insulation equipment is retrieved to the ground. The first connecting mechanism 21 and the second connecting mechanism 22 of the vacuum pumping device 2 are reconnected to the corresponding first sealing joint 13 and the second sealing joint 14. The first sealing joint 13 and the second sealing joint 14 are adjusted to the open state through the first connecting mechanism 21 and the second connecting mechanism 22. The vacuum chamber is repeatedly evacuated until the vacuum level of the vacuum chamber is restored to the required range. The first sealing joint 13 and the second sealing joint 14 are adjusted to the sealed state, and the vacuum pumping device 2 is removed. Then the vacuum insulation bottle 1 is put into operation.

[0108] S5: Repeat step S4 until vacuum thermos flask 1 has finished its work.

[0109] This vacuuming method, without damaging the structure of the vacuum thermos flask 1, allows switching between sealed and open states through the cooperation of the vacuuming device 2 and the first sealing joint 13 and the second sealing joint 14. This frees the vacuum thermos flask 1 from the limitation of single use, enabling multiple and repeated vacuuming operations on the vacuum chamber, thereby significantly enhancing vacuum holding capacity and effectively reducing operating costs. The vacuum gauge 17 monitors the vacuum level in real time and makes vacuuming decisions based on preset first and second safety thresholds, making the vacuuming process more controllable and precise. The suction canister 18 continuously adsorbs precipitated gases under high-temperature conditions, effectively suppressing vacuum decay and significantly extending the vacuum holding time of the vacuum thermos flask 1. It allows for rapid vacuuming of the vacuum thermos flask 1 on-site and replacement of the suction canister 18 under sealed conditions, further reducing maintenance costs and improving work efficiency. Therefore, the vacuum thermos flask 1 can maintain a high vacuum state under ultra-long-term and repeated high-temperature shock conditions, reliably protecting the electronic components inside the inner tube assembly 11. Meanwhile, the thermal insulation connection component 15 not only enables electrical connection between internal wiring and external equipment, but also effectively blocks external heat transfer to the inner tube component 11, improving overall thermal insulation performance. In addition, the dual-extraction channel structure improves extraction efficiency and the uniformity of vacuum formation, ensuring a more stable and reliable vacuum chamber, making it particularly suitable for applications such as oil and gas logging that are exposed to extreme high-temperature environments for extended periods.

[0110] Specifically, the vacuum level of the first safety threshold is higher than that of the second safety threshold.

[0111] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A heat preservation device capable of repeated vacuuming for housing electronic components including a circuit board (3) and wires, characterized in that, The heat preservation device capable of repeated vacuuming includes: A vacuum thermos flask (1) includes an inner tube assembly (11), an outer tube assembly (12), and a heat-insulating connection assembly (15). The outer tube assembly (12) is a sealed cavity with at least one open end and the rest are closed ends. Multiple first sealing joints (13) are evenly spaced around the central axis of the outer tube assembly (12) at the open end, and the annular area formed by them is sealed to one end of the heat-insulating connection assembly (15). A second sealing joint (14) is provided at the central axis position of the closed end. Both the first sealing joint (13) and the second sealing joint (14) can be in the open state and sealed. Switching between states; the inner tube assembly (11) is placed inside the outer tube assembly (12), with one end near the open end sealed to the other end of the heat-insulating connection assembly (15), and the end away from the open end being a closed end; the electronic assembly is placed inside the inner tube assembly (11), with heat-absorbing assemblies (16) at both ends respectively, and the wire passes through the heat-absorbing assembly (16) near the open end and is electrically connected to the heat-insulating connection assembly (15); the vacuum gauge (17) and at least one replaceable suction canister (18) can be selectively sealed at the open end or the closed end; The vacuum device (2) includes a first connecting mechanism (21), a second connecting mechanism (22), and a vacuum driving assembly (23). One end of the first connecting mechanism (21) and the second connecting mechanism (22) are respectively connected to the vacuum driving assembly (23), and the other end is respectively detachably and sealed to the first sealing joint (13) and the second sealing joint (14), which are used to simultaneously switch the state of each sealing joint and evacuate the inner tube assembly (11) and the outer tube assembly (12) to form a vacuum cavity.

2. The heat preservation equipment capable of repeated vacuuming according to claim 1, characterized in that, The outer tube assembly (12) includes an outer tube (121) and an open end cap (122) that is sealed to the end of the outer tube (121). The open end cap (122) has a first through hole (1221) that seals with the first sealing joint (13). The diameter of the hole gradually decreases along the direction close to the vacuum cavity. The first sealing joint (13) has a sealing section with a decreasing outer diameter along the direction close to the vacuum cavity, and a first sealing ring (132) and a second sealing ring (133) are arranged at intervals. The first sealing joint (13) moves back and forth along the axis of the outer tube assembly (12). The first sealing joint (13) has an air intake channel (134) inside along its length, and an air intake through hole (135) communicating with the vacuum cavity is opened on the side wall between the first sealing ring (132) and the second sealing ring (133).

3. The heat preservation equipment capable of repeated vacuuming according to claim 2, characterized in that, The first sealing joint (13) extends from the side of the first through hole (1221) away from the vacuum cavity and can abut against the outer surface of the opening end cap (122); the outer wall of the first sealing joint (13) is provided with a first limiting protrusion (131); the first through hole (1221) is provided with a first annular boss (1222) at the end of the hole away from the vacuum cavity, which cooperates with the first limiting protrusion (131) to limit the movement distance of the first sealing joint (13) towards the vacuum cavity.

4. The heat preservation equipment capable of repeated vacuuming according to claim 1, characterized in that, The first connecting mechanism (21) includes a plurality of first suction pipe assemblies (211), a linkage drive assembly (212), and a first suction pipe (213); one end of each of the plurality of first suction pipe assemblies (211) is detachably and sealedly connected to a plurality of first sealing joints (13) respectively, and the other end is connected to the linkage drive assembly (212); the linkage drive assembly (212) can simultaneously drive the plurality of first suction pipe assemblies (211) to move synchronously and perform suction at the same time; one end of the first suction pipe (213) is connected to the linkage drive assembly (212), and the other end is sealedly connected to the suction drive assembly (23) for evacuating the vacuum chamber.

5. The heat preservation equipment capable of repeated vacuuming according to claim 4, characterized in that, The linkage drive assembly (212) includes a first suction pipe connector (2121), a linkage base (2122), an adapter plate (2123), and a support link (2124); the first suction pipe assembly (211) includes a first link (2111) and a second link (2112). The linkage base (2122), the first air extraction pipe connector (2121), and the first air extraction pipe (213) are sequentially sealed and connected. The linkage base (2122) has a linkage cavity inside. Multiple first sealing connectors (13), first connecting rods (2111), and second connecting rods (2112) that are corresponding to each other are sequentially sealed and connected along the axial direction of the outer pipe assembly (12), and are sealed and connected with the linkage cavity inside the linkage base (2122) to form an air extraction passage. Multiple first connecting rods (2111) pass through the adapter plate (2123) and are fixedly connected to the adapter plate (2123). One end of the support connecting rod (2124) is fixedly connected to the adapter plate (2123), and the other end passes through the central area surrounded by multiple first connecting rods (2111) and is fixedly connected to the linkage base (2122).

6. The heat preservation equipment capable of repeated vacuuming according to claim 5, characterized in that, The first sealing joint (13) has an L-shaped groove on the inner wall of the end away from the vacuum cavity. The first connecting rod (2111) and the first sealing joint (13) have a connecting protrusion (2111a) on the outer wall of the connecting end. The connecting protrusion (2111a) and the L-shaped groove are detachably connected.

7. The heat preservation equipment capable of repeated vacuuming according to claim 6, characterized in that, The outer tube assembly (12) also includes a closed end cap (123), which has a plurality of third through holes (1232) circumferentially opened around the central axis of the outer tube assembly (12) for sealing and installing the vacuum gauge (17) and the suction can (18). The getter can (18) includes a can body (181) and a removable can plug (182). The can body (181) contains a getter. Its outer wall has the same aperture and is provided with a third sealing ring (183) and a fourth sealing ring (184) at intervals along the direction close to the vacuum cavity. A vent hole (185) is opened on the side wall of the can body (181) between the two to communicate with the vacuum cavity. The third through hole (1232) has a sealing section with the aperture increasing sequentially along the direction close to the vacuum cavity. The can body (181) can move axially back and forth along the third through hole (1232). The third sealing ring (183) is always sealed to the hole wall. The fourth sealing ring (184) can be selectively sealed to the hole wall.

8. The heat preservation equipment capable of repeated vacuuming according to claim 1, characterized in that, The heat insulation connection assembly (15) includes a heat insulation body (151), a wire (152), an inner connector (153), and an outer connector (154). The heat insulation body (151) is made of insulating heat insulation material. The wire (152) is coiled and arranged axially inside the heat insulation body (151). One end of the heat insulation body (151) is sealed and fixedly connected to the outer tube assembly (12), and the other end is sealed and fixedly connected to the inner tube assembly (11). The inner connector (153) is located at one end of the heat insulation body (151) near the inner tube assembly (11), and the outer connector (154) is located at one end of the heat insulation body (151) near the outer tube assembly (12). The wire, the inner connector (153), the wire (152), and the outer connector (154) are electrically connected in sequence.

9. The heat preservation equipment capable of repeated vacuuming according to claim 1, characterized in that, The vacuum thermos (1) also includes a heat-conducting component (19), which is disposed inside the inner tube assembly (11) and located between the two heat-absorbing components (16) for accommodating the circuit board (3). The heat-conducting component (19) includes a heat-conducting shell (191) and a plurality of heat-conducting blocks (192). The outer wall of the heat-conducting shell (191) is provided with a heat insulation layer that is isolated from the inner tube assembly (11). The plurality of heat-conducting blocks (192) are disposed inside the heat-conducting shell (191) and are in contact with the circuit board (3) and the heat-conducting shell (191) respectively, for conducting the heat generated by the circuit board (3) to the heat-absorbing component (16).

10. A vacuuming method for a heat preservation device capable of repeated vacuuming, characterized in that, The heat preservation device capable of repeated vacuuming as described in any one of claims 1 to 9 includes the following steps: S1: Assemble the electronic components inside the inner tube assembly (11), and arrange the heat-absorbing components (16) at both ends of the inner tube assembly (11); place the inner tube assembly (11) inside the outer tube assembly (12), so that the wire passes through the heat-absorbing component (16) near the open end and is electrically connected to the heat-insulating connection assembly (15), and the heat-insulating connection assembly (15) is sealed to the inner tube assembly (11) and the outer tube assembly (12) respectively; seal and install the vacuum gauge (17) and the suction canister (18) at the closed end. S2: Connect one end of the first connecting mechanism (21) and the second connecting mechanism (22) in the vacuum device (2) to the vacuum drive assembly (23) in a sealed connection, and connect the other end to the corresponding first sealing joint (13) and second sealing joint (14) in a sealed connection, and adjust the first sealing joint (13) and the second sealing joint (14) to the open state through the first connecting mechanism (21) and the second connecting mechanism (22); S3: Start the vacuum drive assembly (23) to evacuate the space between the inner tube assembly (11) and the outer tube assembly (12) to form the vacuum chamber; when the vacuum gauge (17) detects that the vacuum degree of the vacuum chamber reaches the working requirement range, adjust the first sealing joint (13) and the second sealing joint (14) to the sealing state, and remove the vacuum pumping device (2). S4: Put the vacuum thermos bottle (1) into operation. During the operation, the vacuum degree of the vacuum chamber of the vacuum thermos bottle (1) is detected in real time by the vacuum gauge (17), and the suction can (18) is used to absorb the gas generated by the vacuum chamber in the high temperature environment. When the vacuum gauge (17) detects that the vacuum level has dropped to below the first safety threshold but is still above the second safety threshold, the vacuum thermos bottle (1) is retrieved to the ground and the suction canister (18) is replaced under sealed conditions. When the vacuum gauge (17) detects that the vacuum level has dropped below the second safety threshold, the vacuum insulation device is retrieved to the ground. The first connecting mechanism (21) and the second connecting mechanism (22) of the vacuum pumping device (2) are reconnected to the corresponding first sealing joint (13) and second sealing joint (14). The first sealing joint (13) and the second sealing joint (14) are adjusted to the open state through the first connecting mechanism (21) and the second connecting mechanism (22). The vacuum chamber is repeatedly evacuated until the vacuum level of the vacuum chamber is restored to the required range. The first sealing joint (13) and the second sealing joint (14) are adjusted to the sealed state, and the vacuum pumping device (2) is removed. Then the vacuum insulation bottle (1) is put into operation. S5: Repeat step S4 until the vacuum thermos (1) has completed its work.

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