Telescopic pole type remote geothermal temperature measuring device

Abstract

The application discloses a telescopic rod type long-distance geothermal temperature measuring device and relates to the technical field of geothermal temperature measuring devices.The telescopic rod type long-distance geothermal temperature measuring device comprises a telescopic rod main body, a protective cover, a temperature measuring element and a controller, the protective cover is fixed to the telescopic end of the telescopic rod main body, the outer wall surface of the protective cover is a conical surface which gradually decreases in size in the direction away from the telescopic rod main body, a plurality of air permeation holes are formed in the side wall of the protective cover and are communicated with the inner cavity of the protective cover, the temperature measuring element is installed in the inner cavity of the protective cover, and the controller is installed at the fixed end of the telescopic rod main body, is configured to receive the temperature signal fed back by the temperature measuring element, and transmits the temperature signal to a remote control terminal through a remote transmission module after analyzing and processing the temperature signal.The telescopic rod main body can be used to realize flexible length adjustment and adapt to temperature measuring requirements at different depths, the temperature measuring element is arranged at the telescopic end and the protective cover with the air permeation holes is arranged, the temperature measuring precision can be ensured, the temperature measuring element can be prevented from being damaged by the environment erosion or collision in the geothermal exploration hole, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of geothermal temperature measurement device technology, and more specifically to a telescopic rod type long-distance geothermal temperature measurement device. Background Technology

[0002] Currently, the temperature measuring devices commonly used in geothermal resource exploration are mostly fixed or cable-based structures. Fixed probes have a fixed length, making them extremely difficult to transport in complex terrains such as mountainous areas and dense forests. Furthermore, the location of the measuring points is difficult to adjust on-site according to actual geological changes, resulting in poor adaptability. While cable-based probes offer adjustable length and are relatively convenient to store, the cables in deep holes are susceptible to stretching and torsion, leading to depth positioning errors.

[0003] Furthermore, the sensors in the aforementioned devices are all exposed to the outside. When inserted into geothermal exploration boreholes containing rock cuttings, narrow diameters, or irregular well walls, the external sensors are highly susceptible to collisions, leading to encapsulation damage, lead wire breakage, or parameter drift, affecting measurement sensitivity and reliability. Especially during the lowering and raising processes, the friction between the cable and the borehole wall can disturb the thermal field inside the borehole, reducing data accuracy.

[0004] In summary, existing geothermal temperature measurement devices suffer from problems such as inconvenience in carrying, difficulty in adjustment, and lack of effective protection for sensors that are easily damaged. Therefore, there is an urgent need for a temperature measurement device that is compact in structure, flexible in depth adjustment, and has effective protection for the sensors. Summary of the Invention

[0005] In view of this, the present invention aims to provide a telescopic rod type long-distance geothermal temperature measurement device to at least partially solve the problems of existing geothermal temperature measurement devices, such as inconvenience in carrying, difficulty in adjustment, and lack of effective protection for sensors that are easily damaged.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A telescopic pole type long-distance geothermal temperature measurement device includes: The telescopic pole body has a fixed end that is detachably connected to the mounting base or mobile carrier. A protective cover is fixed to the telescopic end of the telescopic rod body, and its outer wall surface is a tapered surface that gradually narrows away from the telescopic rod body; the side wall of the protective cover is provided with a plurality of ventilation holes that communicate with its inner cavity. A temperature sensing element is installed inside the protective cover; The controller is installed at the fixed end of the telescopic rod body and is configured to receive the temperature signal fed back by the temperature measuring element, analyze and process it, and then transmit it to the remote control terminal through the remote transmission module.

[0008] The beneficial effects that this invention can achieve are: the length of the telescopic rod body can be flexibly adjusted to meet the temperature measurement needs at different depths; the temperature measuring element is set at the telescopic end and is equipped with a protective cover with vent holes, which can not only ensure the accuracy of temperature measurement, but also protect it from damage such as erosion or collision in the geothermal exploration hole environment, thus extending its service life.

[0009] Furthermore, the telescopic rod body includes multiple sleeves and a locking assembly. The multiple sleeves are sequentially sleeved in order of radial dimension from large to small, and adjacent sleeves can slide relative to each other axially. Each pair of adjacent sleeves is locked by the locking assembly to restrict their axial sliding. The outermost sleeve is detachably connected to the mounting base or moving carrier. The protective cover is installed at the telescopic end of the innermost sleeve.

[0010] Furthermore, each of the aforementioned sleeves is made of aluminum alloy.

[0011] Furthermore, each of the sleeves has an arc-shaped chamfer on the end face near the temperature sensing element that smoothly transitions to its outer wall surface.

[0012] Furthermore, the locking assembly includes a rotating shaft, an eccentric wheel, a lever, a male limiting component, and a female limiting component. The rotating shaft is arranged along the axial direction of the sleeve and is fixed on the inner sidewall of the outer sleeve of two adjacent sleeves, corresponding to the end near the temperature measuring element. The eccentric wheel is fixed to the shaft of the rotating shaft and is eccentrically arranged relative to the rotating shaft. Its rolling wheel surface can press against the outer wall surface of the inner sleeve of two adjacent sleeves. A sliding hole is opened on the sidewall of the outer sleeve corresponding to the rotating shaft, with its length direction arranged along its circumferential direction. One end of the lever is fixedly connected to the rotating shaft, and the other end extends through the sliding hole to the outside of the outer sleeve. The male limiting component is installed on the other end of the lever, and the female limiting component is disposed on the outer wall surface of the outer sleeve and can be limited and engaged with the male limiting component.

[0013] Furthermore, the limiting male component is an elastic limiting pin, and the limiting female component is a locking pin hole that engages with the elastic limiting pin for limiting and insertion.

[0014] Furthermore, the protective cover is made of ceramic material.

[0015] Furthermore, a waterproof and breathable membrane is installed at the vent.

[0016] Furthermore, the temperature sensing element is a distributed fiber optic sensor.

[0017] Furthermore, the remote transmission module adopts a LoRa module.

[0018] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a telescopic rod-type long-distance geothermal temperature measurement device. The present invention achieves flexible length adjustment through the telescopic rod body to adapt to temperature measurement needs at different depths; the temperature measuring element is set at the telescopic end and equipped with a protective cover with ventilation holes, which not only ensures the temperature measurement accuracy, but also protects it from damage such as erosion or collision in the geothermal exploration borehole environment, thus extending its service life; the distributed fiber optic sensor ensures temperature measurement accuracy and spatial resolution; the wireless remote transmission module enables remote data monitoring, reducing the cost of manual intervention; the overall device is portable, easy to operate, and can be widely used in temperature exploration in geothermal wells, hot spring areas, and other scenarios. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a telescopic rod-type long-distance geothermal temperature measurement device provided by the present invention.

[0021] Figure 2 This is a cross-sectional structural diagram of a telescopic rod-type long-distance geothermal temperature measurement device according to the present invention.

[0022] Figure 3 This is a schematic diagram of the inner sleeve structure of the present invention.

[0023] In the diagram: 1. Telescopic rod body; 11. Sleeve; 11-1. Outer sleeve; 11-2. Inner sleeve; 12. Locking assembly; 121. Rotary shaft; 122. Eccentric wheel; 123. Lever; 124. Limit male component; 125. Limit female component; 2. Protective cover; 3. Controller; 4. Bracket. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Please see Figures 1-3 This invention discloses a telescopic pole-type long-distance geothermal temperature measurement device, comprising: a telescopic pole body 1, a protective cover 2, a temperature measuring element, and a controller; the fixed end of the telescopic pole body 1 is detachably connected to the mounting base or a mobile carrier via a bracket 4; the protective cover 2 is fixed to the telescopic end of the telescopic pole body 1, and its outer wall surface is a tapered surface that gradually narrows away from the telescopic pole body 1; multiple ventilation holes 21 communicating with its inner cavity are provided on the side wall of the protective cover 2; the temperature measuring element is installed in the inner cavity of the protective cover 2; the controller 3 is installed at the fixed end of the telescopic pole body 1, and is configured to receive the temperature signal fed back by the temperature measuring element, analyze and process it, and then transmit it to a remote control terminal through a remote transmission module.

[0028] In one specific embodiment, the telescopic rod body 1 includes multiple sleeves 11 and a locking assembly 12. The multiple sleeves 11 are sequentially sleeved in descending order of radial dimension, and adjacent sleeves 11 can slide relative to each other axially to adjust the length of the telescopic rod body 1, thereby adjusting the depth to which the end temperature measuring element can be inserted into the geothermal exploration borehole. Each pair of adjacent sleeves 11 is locked by the locking assembly 12 to restrict their axial sliding, so that the entire telescopic rod body 1 is locked at a set length, allowing the temperature measuring element to penetrate to a set depth to monitor the temperature at that depth. The outermost sleeve 11 is detachably connected to the mounting base or moving carrier; the telescopic end of the innermost sleeve 11 is equipped with a protective cover 2.

[0029] In one specific embodiment, each sleeve 11 is made of aluminum alloy, which is corrosion resistant, extends service life, and is lightweight and easy to carry.

[0030] In one specific embodiment, each casing 11 has an arc-shaped chamfer on the end face near the temperature sensing element that smoothly transitions to its outer wall surface, which can reduce the probability of the rod getting stuck when it is inserted into the well in a curved or scaled environment.

[0031] In one specific embodiment, the description is based on two sleeves 11. The locking assembly 12 includes a rotating shaft 121, an eccentric wheel 122, a lever 123, a limiting male component 124, and a limiting female component 125. The rotating shaft 121 is arranged along the axial direction of the sleeve 11 and is fixed on the inner wall of the outer sleeve (hereinafter referred to as the outer sleeve 11-1) corresponding to the end near the temperature sensing element. The eccentric wheel 122 is fixed on the shaft of the rotating shaft 121 and is eccentrically arranged relative to the rotating shaft 121. Its rolling wheel surface can be pressed against the inner sleeve of two adjacent sleeves 11. The outer wall of the inner sleeve (hereinafter referred to as the inner sleeve 11-2) is provided; a sliding hole is provided on the side wall of the outer sleeve 11-1 corresponding to the rotating shaft 121, and the length direction is arranged along its circumferential direction. One end of the lever 123 is fixedly connected to the rotating shaft 121, and the other end extends through the sliding hole to the outside of the outer sleeve 11-1; a limiting male part 124 is installed on the other end of the lever 123, and a limiting female part 125 is provided on the outer wall of the outer sleeve 11 and can be limited and matched with the limiting male part 124. When the limiting male part 124 and the limiting female part 125 are released, the lever 123 can be moved to slide along the sliding hole, and the rotating shaft 121 is driven to rotate, thereby driving the eccentric wheel 122 to rotate and adjust the fitting and pressing force with the inner sleeve 11-2, so as to realize the relative sliding or axial locking between the two corresponding sleeves 11.

[0032] In one specific embodiment, the limiting male part 124 is an elastic limiting pin, and the limiting female part 125 is a locking pin hole that fits into the limiting position of the elastic limiting pin. The elastic limiting pin includes a fixed tube, a pin shaft, and a spring. The fixed tube is connected to the lever 123 via a connecting rod. The pin shaft is coaxially slidably installed in the inner cavity of the fixed tube, and a spring is provided between the pin shaft and the fixed tube. When the pin shaft is pulled outward, the spring is compressed, which allows the pin shaft to disengage from the locking pin hole. At this time, the lever 123 can be moved along the sliding hole to make the eccentric wheel 122 rotate until it is no longer in contact with the inner sleeve 11-2, so that the two sleeves 11 can slide axially relative to each other, thereby adjusting the total length of the telescopic rod body 1. After adjustment, the lever 123 is moved again to make the elastic limiting pin correspond to the locking pin hole and insert it, thus re-locking the two.

[0033] In one specific embodiment, multiple limiting grooves are axially spaced on the outer wall of the inner sleeve 11-2. The eccentric wheel 122 can roll and press against the bottom of the groove to strengthen axial limiting and enhance the reliability of locking between the sleeves 11 of the telescopic rod.

[0034] In one specific embodiment, the protective cover 2 is made of ceramic material and can withstand a high temperature of 200°C.

[0035] In one specific embodiment, a waterproof and breathable membrane is installed at the vent 21 to prevent moisture or impurities from entering the protective cover 2 and to protect the temperature measuring element from damage.

[0036] In one specific embodiment, the temperature sensing element is a DTS distributed fiber optic sensor with a temperature measurement accuracy of ±0.5℃.

[0037] In one specific embodiment, the remote transmission module adopts a LoRa module with an operating frequency of 433MHz and a communication distance of up to 2km.

[0038] When the temperature measuring device of this embodiment is in use, the telescopic rod body 1 can be extended to the target length and locked by the locking component, so that the end temperature measuring element is inserted into the geothermal exploration hole, and then the temperature measurement is started. The measured temperature data is processed by the controller and transmitted to the remote control terminal for display in real time.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic pole type long-distance geothermal temperature measurement device, characterized in that, include: Telescopic rod body (1), the fixed end of the telescopic rod body (1) is detachably connected to the mounting base or mobile carrier; The protective cover (2) is fixed to the telescopic end of the telescopic rod body (1), and its outer wall surface is a tapered surface that gradually narrows away from the telescopic rod body (1); the protective cover (2) has multiple ventilation holes (21) that connect to its inner cavity on its side wall. Temperature sensing element, which is installed in the inner cavity of the protective cover (2); The controller (3) is installed at the fixed end of the telescopic rod body (1) and is configured to receive the temperature signal fed back by the temperature measuring element, analyze and process it and then transmit it to the remote control terminal through the remote transmission module.

2. The telescopic pole type long-distance geothermal temperature measurement device according to claim 1, characterized in that, The telescopic rod body (1) includes multiple sleeves (11) and a locking assembly (12). The multiple sleeves (11) are sequentially connected in order of radial dimension from large to small, and two adjacent sleeves (11) can slide relative to each other in the axial direction. Each pair of adjacent sleeves (11) is locked by the locking assembly (12) to restrict their axial sliding. The outermost sleeve (11) is detachably connected to the mounting base or moving carrier. The protective cover (2) is installed at the telescopic end of the innermost sleeve (11).

3. The telescopic pole type long-distance geothermal temperature measurement device according to claim 2, characterized in that, Each of the sleeves (11) is made of aluminum alloy.

4. The telescopic pole type long-distance geothermal temperature measurement device according to claim 2, characterized in that, Each of the sleeves (11) has an arc-shaped chamfer on the end face near the temperature sensing element, which smoothly transitions to its outer wall surface.

5. A telescopic pole type long-distance geothermal temperature measurement device according to claim 2, characterized in that, The locking assembly (12) includes a rotating shaft (121), an eccentric wheel (122), a lever (123), a limiting male component (124), and a limiting female component (125). The rotating shaft (121) is arranged along the axial direction of the sleeve (11) and is fixed in the inner wall of the outer sleeve (11) of two adjacent sleeves (11) corresponding to the end near the temperature measuring element. The eccentric wheel (122) is fixed on the shaft of the rotating shaft (121) and is eccentrically arranged relative to the rotating shaft (121). Its rolling wheel surface can be pressed against the middle of two adjacent sleeves (11). The outer wall of the inner sleeve (11) is provided with a sliding hole arranged along its circumferential direction in the length direction on the side wall of the outer sleeve (11) corresponding to the rotating shaft (121). One end of the lever (123) is fixedly connected to the rotating shaft (121), and the other end extends through the sliding hole to the outside of the outer sleeve (11). The male limiting component (124) is installed at the other end of the lever (123), and the female limiting component (125) is provided on the outer wall of the outer sleeve (11) and can be limited and cooperated with the male limiting component (124).

6. A telescopic pole type long-distance geothermal temperature measurement device according to claim 5, characterized in that, The limiting male component (124) is an elastic limiting pin, and the limiting female component (125) is a locking pin hole that is engaged with the elastic limiting pin for limiting.

7. A telescopic pole type long-distance geothermal temperature measurement device according to any one of claims 1-6, characterized in that, The protective cover (2) is made of ceramic material.

8. A telescopic pole type long-distance geothermal temperature measurement device according to any one of claims 1-6, characterized in that, A waterproof and breathable membrane is installed at the vent (21).

9. A telescopic pole type long-distance geothermal temperature measurement device according to any one of claims 1-6, characterized in that, The temperature sensing element is a distributed fiber optic sensor.

10. A telescopic rod type long-distance geothermal temperature measurement device according to any one of claims 1-6, characterized in that, The remote transmission module uses a LoRa module.

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