Portable well temperature gauge temperature measuring protection tool

Abstract

The utility model discloses a portable well thermometer temperature measurement protection tool, including PVC pipe, its inside is formed with the inner chamber for accommodating well thermometer, is equipped with the outer thread section at its top opening, and the inner bottom is equipped with polyether sponge part, and the polyether sponge part is used for forming the elastic support to realize fixed and shock attenuation to the well thermometer bottom that stretches into the inner chamber, its pipe wall is provided with the regular distribution's through hole, and the through hole is connected with the inner chamber and outside environment, and the PVC spiral top cap is closed top opening through the internal thread and the outer thread section screw joint cooperation of PVC pipe, and the inner top is equipped with the elastic stop piece, and the elastic stop piece is used for fixing the top of well thermometer to limit the axial and radial displacement of well thermometer. The utility model discloses simple structure, convenient operation can realize the combination of rigid protection and flexible buffer of well thermometer all -round protection, effectively reduces well thermometer damage risk, guarantees the reliability of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of well thermometer protection technology, specifically to a portable well thermometer temperature measurement and protection tool. Background Technology

[0002] Well temperature measurement is a core technology in geothermal resource exploration, groundwater research, and geothermal monitoring. Accurately capturing downhole temperature data is a key prerequisite for assessing the permeability and temperature distribution of geothermal reservoirs, analyzing the recharge, discharge, and runoff patterns of groundwater, and tracking the spatiotemporal evolution of the geothermal field.

[0003] Among the current mainstream well temperature measurement methods, the most widely used approach is to lower electronic or glass well thermometers to a designated depth via cables for reading. However, the complexity of the field construction and downhole working environment often becomes a bottleneck for data acquisition. Wellbore interiors often contain obstacles such as protruding well walls, misaligned well pipe joints, sediment buildup, or casing corrosion. During the lowering and raising of the well thermometer, it is highly susceptible to collisions and scrapes, leading to sensor damage, glass tube breakage, poor circuit contact, and ultimately data distortion, measurement interruption, or even instrument failure. Especially when conducting frequent simple well temperature observations at project sites, traditional protective measures are often rudimentary and lack a systematic approach. For example, simple wrapping or temporary reinforcement methods are prone to instability, wear, and difficulty in reuse.

[0004] While some existing technologies offer protection for well thermometers, they are often complex in structure, costly, or have limited applicability, making them difficult to widely apply in challenging field conditions. Therefore, there is an urgent need for a portable well thermometer temperature measurement and protection tool. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a portable well thermometer temperature measurement and protection tool.

[0006] This utility model discloses a portable well thermometer temperature measurement and protection tool, including:

[0007] The PVC pipe has an internal cavity for housing a well thermometer. It has an external threaded section at the top opening and a polyether sponge section at the bottom. The polyether sponge section provides elastic support for the bottom of the well thermometer that extends into the internal cavity to achieve fixation and shock absorption. The pipe wall has regularly distributed flow holes that connect the internal cavity to the external environment.

[0008] The PVC spiral cap is screwed into the external thread section of the PVC pipe through its internal thread to seal the top opening. The top of the cap is provided with an elastic limiting member, which is used to fix the top of the well thermometer to limit the axial and radial displacement of the well thermometer.

[0009] As a further improvement of this utility model, the regular holes on the PVC pipe are distributed in an array, the diameter of the holes is 3-8mm, and the center-to-center distance between adjacent holes is 10-20mm.

[0010] As a further improvement of this utility model, the density of the polyether sponge portion is 20-50 kg / m³. 3 The axial height of the polyether sponge portion is 1.2 to 2 times the inner diameter of the PVC pipe, and the outer wall of the polyether sponge portion is tightly fitted to the inner wall of the PVC pipe.

[0011] As a further improvement of this utility model, the outer wall of the PVC spiral cap is provided with raised anti-slip textures to facilitate twisting.

[0012] As a further improvement of this utility model, the elastic limiting member is a TPE rubber groove, which is integrally formed with the PVC spiral cap by injection molding or fixed to the inner top of the PVC spiral cap by adhesive.

[0013] As a further improvement of this utility model, the TPE rubber groove is composed of an annular fixing part and multiple elastic connecting pieces, and the annular fixing part is used to hold the top of the well thermometer tightly;

[0014] Multiple elastic connecting pieces are arranged at intervals around the outer circumference of the annular fixing part, and their other ends extend along the radial direction of the annular fixing part and are connected to the inner wall of the PVC spiral cap.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention uses a PVC pipe as the outer protective shell. The regular holes in the pipe wall ensure smooth flow of downhole fluid, allowing the well thermometer to fully contact the external environment to obtain accurate temperature data. Simultaneously, the PVC pipe itself effectively resists direct impacts from well wall protrusions, misaligned pipe joints, sediment, and other obstacles, providing the first line of physical protection for the well thermometer. The external threaded section at the top of the PVC pipe matches the PVC spiral cap, facilitating quick assembly and disassembly. The TPE rubber groove inside the cap firmly secures the upper part of the well thermometer, preventing lateral swaying and axial movement. The low-density polyether sponge at the bottom provides elastic support to the bottom of the well thermometer, absorbing vibration energy through the soft material and sealing the bottom of the pipe to prevent the well thermometer from being pushed out of the PVC pipe by gravity. This achieves a stable protective effect with "double fixation from top and bottom," providing comprehensive protection for the well thermometer by combining rigid protection with flexible buffering.

[0017] This utility model features a simple structure, compact size, and lightweight design. The well thermometer is fixed by an elastic limiting component, inserted into the tube, and tightened for use. It is suitable for field operations without complex tools and is easy to carry and move. In terms of economy, it uses low-cost and common materials such as PVC pipe, polyether sponge, and TPE rubber, and the manufacturing process is simple. At the same time, the components are sturdy, durable, and reusable, and worn parts can be easily replaced, significantly reducing long-term operating costs. In terms of protection, it has multiple functions such as impact resistance, anti-shake, shock absorption, and anti-drop, effectively reducing the risk of well thermometer damage and ensuring the reliability of measurement data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a portable well thermometer temperature measurement and protection tool disclosed in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the PVC pipe structure of a portable well thermometer temperature measurement and protection tool disclosed in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the TPE rubber slot of a portable well thermometer temperature measurement and protection tool disclosed in one embodiment of the present invention.

[0021] In the picture:

[0022] 1. PVC pipe; 11. External thread section; 12. Flow hole; 2. Polyether sponge part; 3. PVC spiral cap; 31. Raised anti-slip texture; 4. TPE rubber groove; 41. Ring-shaped fixing part; 42. Elastic connecting piece. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will now be described in further detail with reference to the accompanying drawings:

[0027] like Figure 1 As shown, a portable well thermometer temperature measurement and protection tool provided by this utility model includes a PVC pipe 1, a polyether sponge section 2, a PVC spiral cap 3, and an elastic limiting component. The PVC pipe 1 has an internal cavity for housing the well thermometer, with an external threaded section 11 at its top opening and a polyether sponge section 2 at its inner bottom. The polyether sponge section 2 provides elastic support for the bottom of the well thermometer extending into the internal cavity, achieving fixation and shock absorption. Regularly distributed flow holes 12 are formed on the pipe wall, connecting the internal cavity to the external environment. The PVC spiral cap 3 is screwed into the external threaded section 11 of the PVC pipe 1 via its internal thread to close the top opening. An elastic limiting component is provided at its inner top, fixing the top of the well thermometer and limiting its axial and radial displacement.

[0028] Specific

[0029] like Figure 1 As shown, in the above embodiment, preferably, the regular holes on the PVC pipe 1 are distributed in an array, the hole diameter is 3-8mm, and the center-to-center distance between adjacent holes is 10-20mm.

[0030] In the above embodiments, preferably, the density of the polyether sponge portion 2 is 20–50 kg / m³. 3The axial height of the polyether sponge part 2 is 1.2 to 2 times the inner diameter of the PVC pipe 1, and the outer wall of the polyether sponge part 2 is tightly fitted to the inner wall of the PVC pipe 1. As a soft, porous elastic material, the polyether sponge part 2 can absorb and buffer impact energy from the bottom (such as bottom impact or water flow turbulence), preventing the well thermometer from being internally damaged or having inaccurate readings due to severe vibration. At the same time, the polyether sponge part 2 seals the bottom of the PVC pipe 1, which not only reduces vibration but also perfectly solves the risk that the well thermometer will be pushed out of the bottom of the PVC pipe 1 due to its own weight and downward acceleration, ensuring the fixed position of the equipment inside the PVC pipe 1.

[0031] In the above embodiments, preferably, the outer side wall of the PVC spiral cap 3 is provided with raised anti-slip texture 31 for easy twisting.

[0032] In the above embodiments, preferably, the elastic limiting member is a TPE rubber groove 4, which is integrally formed with the PVC spiral cap 3 by injection molding or fixed to the inner top of the PVC spiral cap 3 by adhesive.

[0033] In the above embodiment, preferably, the TPE rubber groove 4 is composed of an annular fixing part 41 and a plurality of elastic connecting pieces 42, and the annular fixing part 41 is used to hold the top of the well thermometer.

[0034] Multiple elastic connecting pieces 42 are spaced apart and arranged in a ring around the outer circumference of the annular fixing part 41, and the other ends extend along the radial direction of the annular fixing part 41 and are connected to the inner sidewall of the PVC spiral cap 3.

[0035] How to use this embodiment:

[0036] 1) Confirm that all components of the device are in good condition, including the PVC pipe 1 with regular holes, the PVC spiral cap 3 with TPE rubber groove 4 inside, and the low-density polyether sponge placed at the bottom of the PVC pipe 1. Ensure that the polyether sponge part 2 is firmly attached to the bottom of the PVC pipe 1 without loosening or displacement.

[0037] 2) Place the electronic well thermometer or glass well thermometer to be used inside the PVC spiral cap 3, and use the TPE rubber slot 4 inside the PVC spiral cap 3 to clamp and fix the upper middle part of the well thermometer, ensuring that the well thermometer does not wobble or move axially in the slot.

[0038] 3) Secure the PVC spiral cap 3, which has already been fixed to the well thermometer, to the external thread section 11 at the top of the PVC pipe 1 via its internal thread. Slowly tighten the cap until it is fully tightened, completing the assembly of the entire protective tool. At this point, the bottom of the well thermometer should form elastic contact with the polyether sponge part 2 at the bottom of the PVC pipe 1, achieving a "double-fixed" state.

[0039] 4) Connect and secure the assembled protective tool to the measuring cable, and then slowly lower the tool to the designated target formation downhole using the cable;

[0040] 5) After the tool stabilizes at the designated layer, the well thermometer is used to collect and read the well temperature data. During this process, the flow holes 12 in the wall of PVC pipe 1 ensure that the downhole fluid can smoothly enter the inner chamber, allowing the well thermometer to fully contact the external environment and ensuring the accuracy of the measurement data;

[0041] 6) After temperature measurement, slowly raise the protective tool to the ground using a cable. Then, reverse the PVC spiral cap 3 to remove it from the PVC pipe 1, and take out the internal well thermometer to complete one temperature measurement operation. If reuse is required, check the condition of each component before repeating the above steps.

[0042] Advantages of this utility model:

[0043] This invention uses a PVC pipe 1 as an outer protective shell. The regular holes on the pipe wall ensure smooth passage of downhole fluid, allowing the well thermometer to fully contact the external environment to obtain accurate temperature data. Simultaneously, the PVC pipe 1 effectively resists direct impacts from well wall protrusions, misaligned pipe joints, sediment, and other obstacles, providing the first line of physical protection for the well thermometer. The external threaded section 11 at the top of the PVC pipe 1 matches the PVC spiral cap 3, facilitating quick assembly and disassembly. The TPE rubber groove 4 inside the cap firmly secures the upper part of the well thermometer, preventing lateral swaying and axial movement. The low-density polyether sponge at the bottom provides elastic support to the bottom of the well thermometer, absorbing vibration energy through the soft material and sealing the bottom of the pipe to prevent the well thermometer from being ejected from the PVC pipe 1 due to gravity. This achieves a stable protective effect of "double fixation from top to bottom," providing comprehensive protection for the well thermometer by combining rigid protection with flexible buffering.

[0044] This utility model features a simple structure, compact size, and lightweight design. The well thermometer is fixed by an elastic limiting component, inserted into the tube, and tightened for use. It is suitable for field operations without complex tools and is easy to carry and move. In terms of economy, it uses low-cost and common materials such as PVC pipe, polyether sponge, and TPE rubber, making the manufacturing process simple. At the same time, the components are sturdy, durable, and reusable, and worn parts can be easily replaced, significantly reducing long-term operating costs. In terms of protection, it combines multiple functions such as impact resistance, anti-shake, shock absorption, and anti-drop, effectively reducing the risk of well thermometer damage and ensuring the reliability of measurement data.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable well thermometer temperature measurement and protection tool, characterized in that, include: A PVC pipe (1) has an inner chamber for housing a well thermometer. The top opening of the pipe has an external thread section (11), and the bottom of the pipe has a polyether sponge section (2). The polyether sponge section (2) is used to provide elastic support for the bottom of the well thermometer that extends into the inner chamber to achieve fixation and shock absorption. The pipe wall has regularly distributed flow holes (12), which connect the inner chamber to the external environment. The PVC spiral cap (3) is screwed into the external thread section (11) of the PVC pipe (1) through its internal thread to close the top opening. The top of the cap is provided with an elastic limiting member, which is used to fix the top of the well thermometer to limit the axial and radial displacement of the well thermometer.

2. The portable well thermometer temperature measurement and protection tool according to claim 1, characterized in that, The regular holes on the PVC pipe (1) are arranged in an array, the diameter of the holes is 3-8mm, and the center-to-center distance between adjacent holes is 10-20mm.

3. The portable well thermometer temperature measurement and protection tool according to claim 1, characterized in that, The density of the polyether sponge part (2) is 20-50 kg / m³. 3 The axial height of the polyether sponge part (2) is 1.2 to 2 times the inner diameter of the PVC pipe (1), and the outer wall of the polyether sponge part (2) is tightly fitted to the inner wall of the PVC pipe (1).

4. The portable well thermometer temperature measurement and protection tool according to claim 1, characterized in that, The outer wall of the PVC spiral cap (3) is provided with raised anti-slip texture (31) to facilitate twisting.

5. The portable well thermometer temperature measurement and protection tool according to claim 1, characterized in that, The elastic limiting component is a TPE rubber groove (4), which is integrally formed with the PVC spiral cap (3) by injection molding or fixed to the inner top of the PVC spiral cap (3) by adhesive.

6. The portable well thermometer temperature measurement and protection tool according to claim 5, characterized in that, The TPE rubber groove (4) is composed of an annular fixing part (41) and multiple elastic connecting pieces (42). The annular fixing part (41) is used to hold the top of the well thermometer tightly. One end of a plurality of elastic connecting pieces (42) is spaced around the outer circumference of the annular fixing part (41), and the other end extends along the radial direction of the annular fixing part (41) and is connected to the inner wall of the PVC spiral cap (3).

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