High-temperature and high-pressure resistant deformation sensor and rock deformation detection device

Abstract

The application discloses a high-temperature and high-pressure resistant deformation sensor and a rock deformation detection device, and relates to the technical field of rock detection.The high-temperature and high-pressure resistant deformation sensor comprises a sensor body, a cover body, a storage assembly, a sealing assembly and a piston assembly.The cover body is used for covering the sensor body inside.The storage assembly is arranged between the sensor body and the cover body, and a material reacting with water to absorb heat is placed in the storage assembly.The sealing assembly is arranged at the end of the storage assembly to seal the material in the storage assembly.The piston assembly is sleeved at the end of the sensor body away from the probe and is used for driving the puncture assembly to move to the sealing assembly.The piston assembly can be forced to move to the sealing assembly and damage the sealing assembly, so that water enters the storage assembly to react with the material to absorb heat and form a low-temperature protective layer outside the sensor body.The application realizes the temperature reduction of the sensor, protects the sensor from the influence of high temperature and high pressure, and avoids the adverse effects of high temperature and high pressure on the stability, accuracy and sensitivity of the sensor.

Description

Technical Field

[0001] This invention relates to the field of rock detection technology, specifically to a high-temperature and high-pressure resistant deformation sensor and a rock deformation detection device. Background Technology

[0002] In triaxial mechanical testing systems for rocks, deformation sensors are a key component used to measure the deformation of rock specimens during triaxial compression tests. LVDT (Locally Variable Temperature Spectrometer) is a commonly used deformation sensor that provides high-precision measurement data. In triaxial deformation-compression tests of rocks, LVDT sensors are used to measure the axial and radial deformation of rock specimens, including the determination of mechanical parameters such as elastic modulus, Poisson's ratio, compressive strength, cohesion, and internal friction angle. The accuracy of these measurements is crucial for assessing the mechanical properties of rocks and their safety in engineering applications.

[0003] However, current rock detection sensors still have the following shortcomings: during the rock detection process, the rock detection area usually needs to be heated and pressurized. Under high pressure and high temperature working conditions, the normal operation of the sensor is easily affected, which affects the accuracy and sensitivity of the detection data, and may even lead to sensor damage, thus having certain limitations.

[0004] Patent document CN109946170A discloses a test device for measuring the radial deformation of uniaxially compressed rock at high temperatures. Belonging to the category of laboratory testing equipment, it includes an axial compression loading device, a temperature control device, a radial displacement measuring device, and a temperature / displacement acquisition device. The radial displacement of the sample is primarily measured by a quartz rod passing through the heating device and resting against the center of the sample, then connected to an external LVDT displacement sensor. The high-temperature resistant quartz rod serves as the medium for measuring the radial deformation of the sample under high-temperature conditions. This device can perform long-term high-temperature uniaxial rock mechanics tests and can achieve real-time dynamic acquisition of radial deformation. The device is simple, reliable, has good long-term stability, and is highly automated. However, the LVDT displacement sensor is also affected by ambient temperature and can only operate in normal pressure environments.

[0005] Patent document CN114184118A discloses a high-temperature resistant, high-radiation LVDT sensor. The high-temperature resistant, high-radiation LVDT sensor includes a coil frame and an iron core. The coil frame includes a frame and coil windings wound around the frame. The iron core is disposed within an axial through-hole in the coil frame. The coil windings are made of chromium-niobium bronze and are covered with an insulating compound, with the gaps between the coils filled by the insulating compound. The LVDT sensor of this invention exhibits strong high-temperature resistance. The sensor operated stably under high temperature, high pressure, and high-pressure conditions, improving sensitivity, reliability, and accuracy. However, it is difficult to manufacture, unsuitable for small spaces, has high cost, and is not suitable for high-pressure operating environments. Summary of the Invention

[0006] This invention aims to address the technical problem that existing deformation sensors are affected by high-pressure and high-temperature working environments, leading to reduced accuracy and sensitivity, or even damage. The purpose is to provide a high-temperature and high-pressure resistant deformation sensor and a rock deformation detection device, which achieves cooling of the sensor body, protecting it from the effects of high temperature and high pressure, and avoiding adverse effects of high temperature and high pressure on the sensor's stability, accuracy, and sensitivity.

[0007] This invention is achieved through the following technical solution:

[0008] The first objective of this invention is to provide a high-temperature and high-pressure resistant deformation sensor, comprising a sensor body, and further comprising:

[0009] A cover is used to enclose the sensor body inside, with the probe of the sensor body passing through one end of the cover and extending outward;

[0010] A storage component is located between the sensor body and the cover, and the storage component contains a material that reacts with water and absorbs heat.

[0011] A sealing assembly is provided at the end of the storage assembly to seal the material inside the storage assembly;

[0012] The piston assembly, sleeved on the end of the sensor body furthest from the probe, is used to move the puncture assembly toward the sealing assembly;

[0013] The piston assembly, when subjected to force, can move toward the sealing assembly and break the sealing assembly, allowing water to enter the storage assembly and react with the material to absorb heat, forming a low-temperature protective layer on the outside of the sensor body.

[0014] Furthermore, a water inlet is provided at the other end of the cover, and the piston assembly can move towards the sealing assembly under force.

[0015] Furthermore, the storage component has an opening at its end, and the storage component has several through holes.

[0016] Furthermore, the inner wall of the sealing assembly is fitted to the outer wall of the sensor body, and the outer wall of the sealing assembly is fitted to the inner wall of the cover.

[0017] Furthermore, the puncture assembly is connected to one side of the piston assembly, with the tip of the puncture assembly facing the sealing assembly.

[0018] Furthermore, the tip of the puncture component is a sharp, conical structure.

[0019] The second objective of this invention is to provide a rock deformation detection device that uses the aforementioned high-temperature and high-pressure resistant deformation sensor for detection.

[0020] A rock deformation detection device, comprising:

[0021] A fixing structure used to fix the sample to be tested inside;

[0022] A radial sensor, mounted on a fixed structure via a housing, is used to detect the radial deformation of the sample under test.

[0023] An axial sensor is bonded to the side of the sample to be tested and is used to detect the axial deformation of the sample.

[0024] The radial sensor is the aforementioned high-temperature and high-pressure resistant deformation sensor.

[0025] Furthermore, the fixing structure includes two sets of fixing plates arranged symmetrically, one end of the two sets of fixing plates is connected by a spring, and the other end is equipped with a radial sensor.

[0026] Furthermore, the side wall of the fixing plate is provided with a through hole and a screw hole, the inner side of the fixing plate is provided with a clamping plate, a slide rod is slidably connected in the through hole, one end of the slide rod is connected to the clamping plate, and a screw is threaded in the screw hole, one end of the screw is connected to the clamping plate.

[0027] Furthermore, a first connecting block is provided on one set of fixing plates, and a fixing block is provided on another set of fixing plates. The outer cover of the radial sensor is installed inside the fixing block, and the radial sensor probe of the radial sensor is bonded to the first connecting block.

[0028] Furthermore, the axial sensor end is provided with a second connecting block, which is then bonded to the side of the sample to be tested.

[0029] Furthermore, the outer wall of the axial sensor is provided with an annular groove, a sliding ring is connected inside the annular groove, and a driven block is connected to the bottom of the sliding ring. The sliding ring can slide up and down and rotate inside the annular groove to make the driven block contact the axial sensor probe.

[0030] Furthermore, an annular groove is formed on the outer wall of the outer cover of the axial sensor, and a sliding ring is connected inside the annular groove. A driven block is connected to the bottom of the sliding ring, and the sliding ring can slide up and down and rotate inside the annular groove to make the driven block contact the axial sensor probe.

[0031] Furthermore, the axial sensor probe end of the axial sensor is connected to a counterweight block, which is used to keep the axial sensor probe in close contact with the driven block under the gravity of the copper counterweight block.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] 1. When the high-temperature and high-pressure deformation sensor of the present invention is used in a high-temperature and high-pressure environment, after the water flow is pressurized, part of the water flow enters the interior of the housing through the water inlet at the bottom of the housing. This pushes the piston assembly to slide upward along the interior of the housing, thereby causing the tips of each set of puncture components to contact the sealing component. The sealing component is then punctured by each set of puncture components, allowing the water flow to enter the inner side of the storage component and mix with the water-reacting endothermic material (such as ammonium nitrate) inside the storage component. After the water flow and ammonium nitrate are mixed, the ammonium nitrate will produce an endothermic effect, thereby forming a low-temperature protective layer on the outside of the sensor body. This effectively cools the sensor body, thereby protecting the sensor body from the effects of high temperature and high pressure, ensuring that the sensor body can work normally, and achieving effective protection of the sensor body.

[0034] 2. This invention uses radial and axial sensors to measure the axial and radial deformation of rock samples. By employing a high-temperature and high-pressure resistant deformation sensor, the rock deformation detection device of this invention can be used in high-temperature and high-pressure testing environments while maintaining good stability, accuracy, and sensitivity.

[0035] 3. The rock deformation detection device of the present invention fixes the sample by setting a fixing plate and a clamping plate. When fixing the rock sample, rotating the screw drives the two sets of clamping plates to move in opposite directions, adjusting the clamping space between the two sets of fixing plates. The rock sample to be tested is placed into the clamping space, and rotating the screw in the opposite direction drives the two sets of clamping plates to move towards each other. The two sets of clamping plates clamp the rock sample to be tested inside to fix the sample. The operation is simple and convenient.

[0036] 4. When fixing rock samples, the position of the clamping plate can be adjusted by the cooperation of the clamping plate, screw and slide bar, so that the fixing plate of the present invention can be used to fix samples of different diameters, and it is easy to quickly install and fix the fixing plate to the outside of samples of different diameters, thus improving the applicability of the device.

[0037] 5. By combining the driven block with the axial sensor, the present invention makes it easier to install and use the rock deformation detection device, eliminating the need for a separate fixing structure. It also makes it easier to adjust the distance and position between the driven block and the axial sensor, reducing setup steps and improving the efficiency of preliminary preparations. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0039] Figure 1 A cross-sectional schematic diagram of the high-temperature and high-pressure deformation sensor of the present invention is shown;

[0040] Figure 2 A cross-sectional schematic diagram of the high-temperature and high-pressure deformation sensor of the present invention is shown;

[0041] Figure 3 The present invention is shown. Figure 2 A magnified view of part A in the diagram;

[0042] Figure 4 This shows a schematic front axial view of the entire sample with the fixing plate of the present invention installed on the outside of the sample;

[0043] Figure 5 This shows a schematic rear-view diagram of the entire sample with the fixing plate of the present invention installed on the outside of the sample;

[0044] Figure 6 This diagram shows an overall top view of the fixing plate portion of the present invention;

[0045] Figure 7 This diagram shows an overall axial view of the fixing plate portion of the present invention;

[0046] Figure 8 A schematic axial view of the axial sensor of the present invention is shown.

[0047] The attached diagram shows the markings and corresponding component names:

[0048] 1-Fixed plate, 101-Slide rod, 102-Clamping plate, 103-Screw, 104-First connecting block, 105-Fixed block, 2-Axial sensor, 201-Axial sensor probe, 202-Second connecting block, 203-Counterweight block, 204-Sliding ring, 205-Driven block, 206-Screw, 207-Annular groove, 3-Cover, 301-Sealing assembly, 302-Storage assembly, 303-Piston assembly, 304-Piercing assembly, 305-Inlet, 4-Radial sensor, 401-Radial sensor probe. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0050] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0051] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0052] In the description of this invention, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this application.

[0053] Meanwhile, the terms "set up," "assemble," "connect," and "link" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] Example 1

[0055] This embodiment 1 provides a high-temperature and high-pressure resistant deformation sensor, such as... Figure 1-3 As shown, it includes the sensor body and also includes:

[0056] Cover 3 is used to cover the sensor body inside, and the probe of the sensor body passes through one end of the cover 3 and extends outward;

[0057] Storage component 302 is located between sensor body and cover 3, and a material that reacts with water and absorbs heat is placed inside storage component 302;

[0058] A sealing component 301 is provided at the end of the storage component 302 to seal the material inside the storage component 302;

[0059] Piston assembly 303 is sleeved on the end of the sensor body away from the probe and is used to drive puncture assembly 304 to move toward sealing assembly 301;

[0060] The piston assembly 303, when subjected to force, can move toward the sealing assembly 301 and break the sealing assembly 301, allowing water to enter the storage assembly 302 and react with the material to absorb heat, forming a low-temperature protective layer on the outside of the sensor body.

[0061] In one or more specific embodiments, the sensor body may be an axial sensor 2 or a radial sensor 4.

[0062] In one or more specific embodiments, the cover 3 adopts an internally hollow cylindrical structure, and a water inlet 305 is provided at the other end of the cover 3. The water inlet 305 is located on the bottom side of the cover 3, such as... Figure 2 As shown, the inlet 305 has an annular through-groove structure. During the detection process of the sensor body, the pressure from the detection environment, such as water flow, will enter the inside of the cover 3 through the inlet 305, causing the piston assembly 303 to move towards the sealing assembly 301 under the push of the water flow.

[0063] In one or more specific embodiments, the storage component 302 is an annular structure with an open end. Its upper end is sealed by the top of the cover 3, and its lower end is sealed by the sealing component 301. The storage component 302 has several through holes on its side wall, which allow the liquid to flow through the through holes after the water enters the storage component 302 and reacts, making the environment where the sensor body is located cooler more evenly.

[0064] In one or more specific embodiments, the sealing assembly 301 adopts an annular sealing plate. The inner wall of the annular sealing plate is in contact with the outer wall of the sensor body, and the outer wall of the annular sealing plate is in contact with the inner wall of the cover 3. The annular sealing plate serves to seal the bottom of the storage assembly 302 on the one hand, and also serves as the base of the storage assembly 302 for fixing the storage assembly 302, so as to facilitate the installation of the storage assembly 302.

[0065] In one or more specific embodiments, the puncture assembly 304 is connected to one side of the piston assembly 303, with the tip of the puncture assembly 304 facing the sealing assembly 301, such as... Figure 2 As shown, the top of the piston plate assembly is fixedly provided with multiple sets of cylindrical puncture components 304 in a ring array. Specifically, the tip of the puncture component 304 is a sharp conical structure. This structure is beneficial for puncturing the sealing component 301. It should be understood that in order to ensure that the sealing component 301 can be effectively punctured, the annular sealing plate can be made of materials such as plastic that are easily damaged by force.

[0066] The working principle of the high temperature and high pressure deformation sensor of this invention is as follows:

[0067] When the high-temperature and high-pressure deformation sensor of the present invention is used in a high-temperature and high-pressure environment, after the water flow is pressurized, part of the water flow enters the interior of the cover 3 through the water inlet 305 at the bottom of the cover 3. This pushes the piston assembly 303 to slide upward along the interior of the cover 3, thereby causing the tips of each set of puncture components 304 to contact the sealing component 301. The sealing component 301 is punctured by each set of puncture components 304, allowing the water flow to enter the inner side of the storage component 302 and mix with the water-reacting endothermic material (such as ammonium nitrate) inside the storage component 302. After the water flow and ammonium nitrate are mixed, the ammonium nitrate will produce an endothermic effect, thereby forming a low-temperature protective layer on the outside of the sensor body, effectively cooling the sensor body, thus protecting the sensor body from the effects of high temperature and high pressure, ensuring that the sensor body can work normally, and achieving effective protection of the sensor body.

[0068] Example 2

[0069] This embodiment uses the high-temperature and high-pressure deformation sensor from Embodiment 1 for detection.

[0070] Specifically, a rock deformation detection device is provided, such as... Figure 4-8 As shown, it includes:

[0071] A fixing structure used to fix the sample to be tested inside;

[0072] Radial sensor 4, mounted on a fixed structure via cover 3, is used to detect the radial deformation of the sample under test;

[0073] Axial sensor 2 is bonded to the side of the sample to be tested and is used to detect the axial deformation of the sample.

[0074] The radial sensor 4 is the high-temperature and high-pressure deformation sensor of Embodiment 1.

[0075] This embodiment uses a radial sensor 4 and an axial sensor 2 to measure the axial and radial deformation of a rock sample. By employing a high-temperature and high-pressure resistant deformation sensor, the rock deformation detection device of this invention can be used in a high-temperature and high-pressure testing environment while maintaining good stability, accuracy, and sensitivity.

[0076] In one or more specific implementations, such as Figure 4-7 As shown, the fixing structure includes two sets of fixing plates 1 arranged symmetrically. The fixing plates 1 adopt an arc-shaped plate structure. The two sets of fixing plates 1 are arranged symmetrically from left to right. One end of the two sets of fixing plates 1 is connected by a spring, and the other end is equipped with a radial sensor 4. Under this structural design, the interior of the two sets of fixing plates 1 forms a circular space for installing the rock sample to be tested.

[0077] In one or more specific implementations, such as Figure 6 As shown, the side wall of the fixing plate 1 has a through hole and a screw hole. A clamping plate 102 is provided on the inner side of the fixing plate 1. A slide rod 101 is slidably connected within the through hole, with one end of the slide rod 101 connected to the clamping plate 102. A screw 103 is threadedly connected within the screw hole, with one end of the screw 103 connected to the clamping plate 102. The screw 103 adjusts the distance between the clamping plate 102, while the slide rod 101 moves within the through hole, serving as a guide and limiting element.

[0078] When fixing the rock sample to be tested, rotating the screw 103 causes the two sets of clamping plates 102 to move in opposite directions, adjusting the clamping space between the two sets of fixing plates 1. The rock sample to be tested is placed into the clamping space, and rotating the screw 103 in the opposite direction causes the two sets of clamping plates 102 to move towards each other. The two sets of clamping plates 102 clamp the rock sample to be tested inside, thus fixing the sample. The operation is simple and convenient. Furthermore, the position of the clamping plate 102 can be adjusted by the cooperation of the clamping plate 102, the screw 103 and the slide bar 101, so that the fixing plate 1 of the present invention can be used to fix samples of different diameters, and it is easy to quickly install and fix the fixing plate 1 to the outside of samples of different diameters, thus improving the applicability of the device.

[0079] In one or more specific implementations, such as Figure 6 As shown, a first connecting block 104 is provided on one set of fixing plates 1, and a fixing block 105 is provided on another set of fixing plates 1. The outer cover 3 of the radial sensor 4 is installed in the through groove inside the fixing block 105. The radial sensor probe 401 of the radial sensor 4 passes through the positioning block and is bonded to the first connecting block 104, so as to realize the detection of radial deformation of the sample to be tested.

[0080] In one or more specific implementations, such as Figure 8 As shown, the axial sensor 2 has a second connecting block 202 at its end, and is bonded to the side of the sample to be tested through the second connecting block 202.

[0081] The axial sensor 2 has an annular groove 207 on its outer wall. A circular sliding ring 204 is connected inside the annular groove 207. A driven block 205 is connected to the bottom of the sliding ring 204. The annular groove 207 is wider at the top and bottom, so that the sliding ring 204 can slide up and down and rotate inside the annular groove 207 to make the driven block 205 contact the axial sensor probe 201.

[0082] The present invention combines the driven block 205 with the axial sensor 2, making it easier to install and use the device without the need for a separate fixing structure. It also makes it easier to adjust the distance and position between the driven block 205 and the axial sensor, reducing setup steps and improving the efficiency of preliminary preparation.

[0083] Preferably, the axial sensor probe 201 of the axial sensor 2 is connected to a counterweight 203 at its end, which is used to keep the axial sensor probe 201 in close contact with the driven block 205 under the gravity of the copper counterweight 203.

[0084] Preferably, a through-hole structure is provided on one side of the driven block 205, and a screw 206 is rotatably installed in the screw hole through thread engagement. The screw 206 is screwed into the sample, thereby fixing the driven block 205 to the sample.

[0085] The working principle of the rock deformation detection device in this embodiment is as follows:

[0086] The outer cover 3 of the radial sensor 4 is placed into the through groove inside the fixing block 105, so that the axial sensor probe 201 of the radial sensor 4 contacts the first connecting block 104 and is glued to the first connecting block 104 with adhesive. At the same time, adhesive is applied to the second connecting block 202 of the axial sensor 2. Then, the axial sensor 2 is glued to one side of the outer wall of the sample through the second connecting block 202. Then, the sliding ring 204 is slid up and down along the annular groove on the outside of the axial sensor 2, which synchronously drives the driven block 205 to move up and down, thereby adjusting the driven block 205. After adjusting the distance between the driven block 205 and the axial sensor 2 to a suitable distance, screw 206 is screwed into the sample by rotating the screw 206, thereby fixing the driven block 205 to the sample. Adhesive can also be added to the screw 206 to bond and fix the screw 206 to the sample. After fixing, the axial sensor probe 201 at the bottom of the axial sensor 2 maintains close contact with the top surface of the driven block 205 under the gravity of the counterweight 203, which facilitates the detection of radial deformation of the sample and maintains stability during the detection process.

[0087] Example 3

[0088] This embodiment is an improvement on embodiment 2. The improvement is that the axial sensor 2 also adopts the high temperature and high pressure deformation sensor of embodiment 1.

[0089] Specifically, when a cover 3 is also provided outside the axial sensor 2, an annular groove 207 needs to be provided on the outer wall of the cover 3 outside the axial sensor 2 to facilitate the connection of the sliding ring 204. The sliding ring 204 is connected in the annular groove 207, and a driven block 205 is connected to the bottom of the sliding ring 204. The sliding ring 204 can slide up and down and rotate in the annular groove 207 so that the driven block 205 is in close contact with the axial sensor probe 201.

[0090] This allows the axial sensor 2 to be protected in the same way when testing samples, thus meeting different testing needs.

[0091] Finally, it should be noted that the above specific embodiments are only used to describe the purpose, technical solution, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation of the present invention and is not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing specific embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions or improvements can be made to some or all of the technical features. These modifications, equivalent substitutions, and improvements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A high-temperature and high-pressure resistant deformation sensor, comprising a sensor body, characterized in that, Also includes: The cover (3) is used to cover the sensor body inside, and the probe of the sensor body passes through one end of the cover (3) and extends outward; A storage component (302) is disposed between the sensor body and the cover (3), and a material that reacts with water and absorbs heat is placed inside the storage component (302); A sealing assembly (301) is provided at the end of the storage assembly (302) to seal the material inside the storage assembly (302); The piston assembly (303) is sleeved on the end of the sensor body away from the probe and is used to drive the puncture assembly (304) to move toward the sealing assembly (301); The piston assembly (303) is able to move toward the sealing assembly (301) under force and break the sealing assembly (301), allowing water to enter the storage assembly (302) and react with the material to absorb heat, forming a low-temperature protective layer on the outside of the sensor body.

2. The high-temperature and high-pressure resistant deformation sensor according to claim 1, characterized in that, The other end of the cover (3) is provided with a water inlet (305), and the piston assembly (303) can move towards the sealing assembly (301) under force.

3. The high-temperature and high-pressure resistant deformation sensor according to claim 1, characterized in that, The storage component (302) has an opening at its end, and the storage component (302) has several through holes.

4. The high-temperature and high-pressure resistant deformation sensor according to claim 1, characterized in that, The inner wall of the sealing assembly (301) is in contact with the outer wall of the sensor body, and the outer wall of the sealing assembly (301) is in contact with the inner wall of the cover (3).

5. A high-temperature and high-pressure resistant deformation sensor according to claim 1, characterized in that, The puncture assembly (304) is connected to one side of the piston assembly (303), with the tip of the puncture assembly (304) facing the sealing assembly (301).

6. A high-temperature and high-pressure resistant deformation sensor according to claim 5, characterized in that, The tip of the puncture assembly (304) is a sharp, conical structure.

7. A rock deformation detection device, wherein the high temperature and high pressure resistant deformation sensor as described in any one of claims 1-6 is used for detection.

8. A rock deformation detection device according to claim 7, characterized in that, include: A fixing structure used to fix the sample to be tested inside; A radial sensor (4) is mounted on a fixed structure via a cover (3) and is used to detect the radial deformation of the sample to be tested. An axial sensor (2) is attached to the side of the sample to be tested and is used to detect the axial deformation of the sample to be tested. The radial sensor (4) is a high-temperature and high-pressure deformation sensor as described in any one of claims 1-6.

9. A rock deformation detection device according to claim 8, characterized in that, The fixing structure includes two sets of fixing plates (1) arranged symmetrically. One end of the two sets of fixing plates (1) is connected by a spring, and the other end is equipped with a radial sensor (4).

10. A rock deformation detection device according to claim 9, characterized in that, The side wall of the fixing plate (1) is provided with a through hole and a screw hole. The inner side of the fixing plate (1) is provided with a clamping plate (102). A slide rod (101) is slidably connected in the through hole. One end of the slide rod (101) is connected to the clamping plate (102). A screw rod (103) is threaded in the screw hole. One end of the screw rod (103) is connected to the clamping plate (102).

11. A rock deformation detection device according to claim 9, characterized in that, A first connecting block (104) is provided on one set of fixing plates (1), and a fixing block (105) is provided on another set of fixing plates (1). The outer cover (3) of the radial sensor (4) is installed inside the fixing block (105), and the radial sensor probe (401) of the radial sensor (4) is bonded to the first connecting block (104).

12. A rock deformation detection device according to claim 8, characterized in that, The axial sensor (2) is provided with a second connecting block (202) at its end, and is attached to the side of the sample to be tested through the second connecting block (202).

13. A rock deformation detection device according to claim 12, characterized in that, The outer wall of the axial sensor (2) is provided with an annular groove (207), and a sliding ring (204) is connected inside the annular groove (207). A driven block (205) is connected to the bottom of the sliding ring (204). The sliding ring (204) can slide up and down and rotate inside the annular groove (207) to make the driven block (205) contact the axial sensor probe (201).

14. A rock deformation detection device according to claim 12, characterized in that, The outer wall of the cover (3) outside the axial sensor (2) is provided with an annular groove (207). A sliding ring (204) is connected inside the annular groove (207). A driven block (205) is connected to the bottom of the sliding ring (204). The sliding ring (204) can slide up and down and rotate inside the annular groove (207) to make the driven block (205) contact the axial sensor probe (201).

15. A rock deformation detection device according to claim 13 or 14, characterized in that, The axial sensor probe (201) of the axial sensor (2) is connected to a counterweight (203) at its end, which is used to keep the axial sensor probe (201) in close contact with the driven block (205) under the gravity of the copper counterweight (203).

Images