Slow-descent thermal insulation device for probe tube

Abstract

A slow-descent thermal insulation device for a probe tube, the slow-descent thermal insulation device comprising: a first thermal insulation member, which is wrapped around a pressure-resistant cylinder (1); and a second thermal insulation member and a third thermal insulation member, which are respectively located at two ends of the pressure-resistant cylinder (1), wherein the second thermal insulation member and the third thermal insulation member respectively extend into openings at the two ends of the pressure-resistant cylinder (1); a thermal insulation cavity (5) is provided inside each of the first thermal insulation member and the second thermal insulation member; and a cable outlet (8) runs through the middle portion of the third thermal insulation member. A thermal insulation sleeve (6) is further provided inside the pressure-resistant cylinder (1), and the thermal insulation sleeve (6) is arranged concentrically with the pressure-resistant cylinder (1).

Description

A slow-descent heat preservation device for a probe

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202520535046.7, filed on March 25, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of probe insulation, and more specifically, to a probe slow-descent insulation device. Background Technology

[0004] High-temperature drilling pipes are crucial measuring tools for detecting wellbore deviation, location, and other information. The pipe consists of an external pressure-resistant cylinder and sensors located within it. After being heated to the target temperature (e.g., 180°C) in a heating cylinder, the pipe needs to be slowly cooled. However, the high thermal conductivity of beryllium copper (≥105 W / m·K) causes rapid heat loss, affecting the pipe's functionality. Traditional solutions struggle to achieve low-cost, efficient insulation of the drilling pipe within limited installation space. Summary of the Invention

[0005] The purpose of this application is to provide a slow-descent heat preservation device for a probe, so as to solve the technical problems existing in the background art.

[0006] This application provides a slow-descent insulation device for a probe, including an insulation component one wrapped around a pressure-resistant cylinder, and insulation components two and three located at both ends of the pressure-resistant cylinder, respectively. The insulation components two and three extend into the ports at both ends of the pressure-resistant cylinder. Insulation components one and two are provided with insulation cavities inside, and insulation component three has a wire outlet hole through its middle.

[0007] It also includes a heat-insulating sleeve disposed inside the pressure-resistant cylinder, the heat-insulating sleeve being concentrically disposed with the pressure-resistant cylinder.

[0008] In a preferred embodiment, the insulation component includes an aluminum foil sleeve that is fitted to the outer wall of the pressure-resistant cylinder.

[0009] In a preferred embodiment, the second insulation component includes a columnar insulation head, and the third insulation component includes a columnar insulation head. Both the first insulation head and the second insulation head are threadedly connected to the pressure-resistant cylinder.

[0010] In a preferred embodiment, both the first heat-insulating head and the second heat-insulating head are made of aluminum alloy.

[0011] In a preferred embodiment, a Teflon protective tube for the data cable to pass through is provided inside the outlet hole, and the length of the Teflon protective tube is adapted to the length of the outlet hole.

[0012] In a preferred embodiment, both the first and second heat insulation heads are embedded with asbestos gaskets on one side of the pressure-resistant cylinder, and the asbestos gasket on the second heat insulation head has a perforation corresponding to the outlet hole.

[0013] In a preferred embodiment, the insulation sleeve is made of nylon.

[0014] The beneficial effects of the technical solution in this application are:

[0015] This proposed slow-descent insulation device, without damaging the pressure-resistant cylinder structure, can achieve insulation of the main components of the probe within a limited space, preventing excessively rapid cooling from affecting detection performance, and at a low cost. This solution effectively insulates the exterior and ends of the pressure-resistant cylinder by incorporating aluminum foil sleeves, insulation head one, insulation head two, insulation tubing, and asbestos gaskets, and is easy to assemble and disassemble. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this application.

[0017] Figure 2 is a cross-sectional view of this application.

[0018] Figure 3 is a schematic diagram of part of the structure of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Pressure-resistant cylinder; 2. Aluminum foil sleeve; 3. Insulation head one; 4. Insulation head two; 5. Insulation cavity; 6. Insulation sleeve; 7. Asbestos gasket; 8. Outlet hole; 9. Teflon protective tube; 10. Mounting frame. Embodiments of the present invention

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present application, and to enable those skilled in the art to understand the present application and design various embodiments with various modifications suitable for a particular purpose.

[0021] As shown in Figures 1-3, the technical solution of this application provides a slow-descent heat preservation device for a probe. The core components of the probe, such as sensors, are installed on the mounting frame 10 inside the pressure-resistant cylinder 1. The slow-descent heat preservation device of this solution can keep the sensors and other structures warm and prevent them from cooling down too quickly, so as to ensure the performance of the probe.

[0022] The slow-descent insulation device of this solution includes an insulation component one wrapped around the pressure-resistant cylinder 1, and insulation components two and three located at the two ends of the pressure-resistant cylinder 1, respectively. Insulation components two and three extend into the ports at both ends of the pressure-resistant cylinder 1. Insulation components one and two are provided with insulation cavities 5 inside, and insulation component three is provided with a wire outlet hole 8 through the middle.

[0023] In the above scheme, the insulation component includes an aluminum foil sleeve 2 that is fitted to the outer wall of the pressure-resistant cylinder 1. The aluminum foil sleeve 2 is fitted outside the pressure-resistant cylinder 1, with a thickness of 0.1 mm and a reflectivity of ≥95%, which can suppress radiative heat dissipation and achieve a certain degree of insulation.

[0024] The second insulation component includes a columnar insulation head 3, and the third insulation component includes a columnar insulation head 4. Both insulation heads 3 and 4 are threadedly connected to the pressure-resistant cylinder 1. Both insulation heads 3 and 4 are made of aluminum alloy. The pressure-resistant cylinder 1 is also made of aluminum alloy. Insulation heads 3 and 4 can seal both ends of the pressure-resistant cylinder 1, and insulation cavities 5 are provided inside insulation heads 3 and 4. The surface of the cavities is polished to enhance heat reflection, effectively preventing heat loss from both ends. The threaded connection also facilitates the disassembly and assembly of the internal components of the pressure-resistant cylinder 1.

[0025] Both the first insulation head 3 and the second insulation head 4 are fitted with asbestos gaskets 7 on one side inside the pressure-resistant cylinder 1. The asbestos gasket 7 on the second insulation head 4 has perforations corresponding to the outlet hole 8. The asbestos gaskets 7 can withstand temperatures up to 500℃. The asbestos gaskets 7 effectively prevent heat from spreading to the first insulation head 3 and the second insulation head 4 at both ends, further reducing the heat dissipation rate at the ends.

[0026] The cable outlet 8 is equipped with a Teflon protective tube 9 for the data cable to pass through, and the length of the Teflon protective tube is adapted to the length of the cable outlet 8. The Teflon protective tube 9 facilitates the data cable exit and prevents the data cable from directly contacting the metal outer wall and causing damage.

[0027] The slow-descent insulation device of this solution also includes an insulation sleeve 6 disposed inside the pressure-resistant cylinder 1. The insulation sleeve 6 is concentrically arranged with the pressure-resistant cylinder 1 and is located close to the second insulation component. Due to the limited internal space of the pressure-resistant cylinder 1, the insulation sleeve 6 is positioned closer to the second insulation component. The insulation sleeve 6 is made of nylon, which has a thermal conductivity of 0.25 W / m·K, only 1 / 100 that of metal, thus blocking the heat leakage path from the insulation mounting frame 10 to the outside of the second insulation component.

[0028] The slow-descent insulation device of this scheme can achieve insulation of the main components of the probe tube in a limited space without damaging the structure of the pressure-resistant cylinder 1, preventing the cooling rate from being too fast and affecting the detection performance, and at a low cost.

[0029] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art and related fields without creative effort should fall within the scope of protection of this application. Structures, devices, and operating methods not specifically described and explained in this application shall be implemented in accordance with conventional means in the art unless otherwise specified and limited.

Claims

1. A slow-descent heat preservation device for a probe, characterized in that: It includes a first insulation component wrapped around the pressure-resistant cylinder, and a second and a third insulation component located at both ends of the pressure-resistant cylinder, respectively. The second and the third insulation components extend into the ports at both ends of the pressure-resistant cylinder. Both the first and the second insulation components have insulation cavities inside, and the third insulation component has a wire outlet hole through the middle. It also includes a heat-insulating sleeve disposed inside the pressure-resistant cylinder, the heat-insulating sleeve being concentrically disposed with the pressure-resistant cylinder.

2. The slow-descent heat preservation device for a probe according to claim 1, characterized in that: The insulation component includes an aluminum foil sleeve that is fitted to the outer wall of the pressure-resistant cylinder.

3. The slow-descent heat preservation device for a probe according to claim 1, characterized in that: The second insulation component includes a columnar insulation head, and the third insulation component includes a columnar insulation head. Both the first insulation head and the second insulation head are threadedly connected to the pressure-resistant cylinder.

4. The slow-descent heat preservation device for a probe according to claim 3, characterized in that: Both the first heat insulation head and the second heat insulation head are made of aluminum alloy.

5. The slow-descent heat preservation device for a probe according to claim 1, characterized in that: The outlet hole is equipped with a Teflon protective tube for the data cable to pass through, and the length of the Teflon protective tube is adapted to the length of the outlet hole.

6. The probe slow-descent heat preservation device according to claim 3, characterized in that: Both the first and second heat insulation heads are embedded with asbestos gaskets on one side inside the pressure-resistant cylinder, and the asbestos gasket on the second heat insulation head has a perforation corresponding to the outlet hole.

7. The slow-descent heat preservation device for a probe according to claim 1, characterized in that: The insulation sleeve is made of nylon.

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