CN215677313U

CN215677313U - High-pressure-resistant high-precision temperature sensor

Info

Publication number: CN215677313U
Application number: CN202122215914.8U
Authority: CN
Inventors: 朱怡
Original assignee: Sichuan Huacan Electronic Co ltd
Current assignee: Sichuan Huacan Electronic Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-01-28
Anticipated expiration: 2031-09-13

Abstract

The application provides a high pressure resistant high accuracy temperature sensor belongs to sensor technical field. The high-pressure-resistant high-precision temperature sensor comprises a sensor body and a protection mounting assembly, wherein the sensor body comprises a protection sleeve, a junction box, an insulation tube and a resistor body, the protective mounting component comprises a base, a limiting sleeve, a protective enclosure frame, an elastic expansion piece, a pressing plate and a protective cover, the protective enclosure is inserted into the limiting sleeve, the elastic expansion piece pushes the compression plate to clamp and fix the connector and the protective sleeve, which is beneficial to realizing the function of quickly dismounting the sensor body, so that the overhaul, maintenance and installation are more convenient, the sensor body is protected by the protective cover, the pressure bearing and protecting functions can be realized by the protective sleeve, the high pressure resistance of the sensor body is improved, the resistor body is supported by the insulating tube, so that the thermal response speed of the sensor body is high, the temperature detection sensitivity is high, and the accuracy of a detection result is improved.

Description

High-pressure-resistant high-precision temperature sensor

Technical Field

The application relates to the field of sensors, in particular to a high-pressure-resistant high-precision temperature sensor.

Background

The temperature sensor is a sensor which can sense temperature and convert the temperature into a usable output signal, is a core part of a temperature measuring instrument, has various varieties, can be divided into two types of contact and non-contact according to a measuring mode, and is divided into two types of thermal resistance and thermocouple according to sensor materials and electronic element characteristics.

When the existing temperature sensor is used under the measurement conditions of high pressure and high temperature, the measurement precision is low due to poor high pressure resistance, the service life is short, and the installation and the disassembly are inconvenient, so that the maintenance is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to remedy the above deficiencies, the present application provides a high-precision temperature sensor that is resistant to high pressure, aiming to improve the problems set forth in the background art described above.

The embodiment of the application provides a high-precision temperature sensor resistant to high pressure, which comprises a sensor body and a protection installation component.

The sensor body comprises a protective sleeve, a junction box, an insulating tube and a resistor body, wherein a connector is arranged at the bottom of the junction box, one end of the protective sleeve is connected with the connector in a threaded mode, the insulating tube is inserted into the protective sleeve, the resistor body is installed in the insulating tube, and one end of the resistor body is electrically connected with the junction box.

The protection installation component comprises a base, a limiting sleeve, a protection enclosing frame, elastic expansion pieces, compression plates and a protective cover, wherein the limiting sleeve penetrates through the center of the base and extends to the lower part, a mounting frame is installed on two sides of the bottom of the base, the protection enclosing frame is fixedly connected to the top of the base, the elastic expansion pieces are symmetrically arranged in two groups and are arranged in the protection enclosing frame, the compression plates are relatively fixedly arranged in the two groups, the elastic expansion pieces are kept away from the protection enclosing frame, the protective casing is inserted in the limiting sleeve, the connector is clamped in the two groups, and the protective cover is arranged at the top of the protective enclosing frame.

In the above-mentioned realization in-process, insert the protective sleeve in the spacing cover, promote the pressure strip through elastic expansion piece and fix connector and protective sleeve centre gripping, be favorable to realizing the quick assembly disassembly function to the sensor body, so that overhaul, maintain, it is more convenient to install, play the effect of protection to the sensor body through the protection casing, avoid influencing the detection precision of sensor body because of external disturbance, can play pressure-bearing and guard action through the protective sleeve, promote the high pressure resistance performance of sensor body, support the resistive element through the insulating tube, can make the resistive element inlay the tip of locating the protective sleeve, make sensor body thermal response fast, temperature detection sensitivity is high, thereby promote the accuracy of testing result.

In a specific embodiment, the protection sleeve comprises an outer protection tube and an inner protection tube, the inner protection tube is inserted into the outer protection tube, and the bottom end of the inner protection tube extends out of the outer protection tube to form a detection probe.

In the implementation process, the outer protection tube and the inner protection tube can bear pressure and protect, and the high-pressure resistance of the sensor body is improved.

In a specific embodiment, an insulating isolation layer is arranged between the insulating tube and the inner protection tube, and the bottom end of the insulating tube is embedded in the inner protection tube.

In the implementation process, the resistor body can be embedded at the end part of the detection probe, the measurement of the resistor body on the temperature can not be influenced, and the accuracy of the detection result is improved.

In a specific embodiment, one side of the junction box is provided with a connector lug, and the other side of the junction box is obliquely provided with a display screen.

In the implementation process, the temperature signal of the junction box component is displayed through the display screen and sent to the controller through the junction box.

In a specific embodiment, protection casing one end pass through the hinge articulate in the frame one side is enclosed in the protection, the protection casing other end pass through the hasp with the protection encloses frame opposite side locking connection, inlay on the protection casing outer wall be equipped with the transparent window of display screen adaptation, the protection casing top has set firmly the link.

In the above-mentioned realization in-process, through the setting of hinge be convenient for opening and shutting of protection casing, enclose the frame top at the protection through the hasp locking with the protection casing to play the effect of protection to the sensor body, the transparent window is convenient for observe the temperature number that the display screen shows under the condition of not opening the protection casing, and the protection casing is conveniently opened and shut to the link is buckled to the finger.

In a specific embodiment, the mounting bracket includes fixed block and mounting panel, the fixed block with the mounting panel all is the L type, fixed block symmetry fixed connection in the base both sides, mounting panel fixed connection in the fixed block bottom, just the mounting panel runs through the spiro union has fastening bolt.

In the implementation process, the device and an external device can be fixed, so that the device is stable to mount.

In a specific embodiment, the elastic expansion piece comprises a fixed sleeve, a sliding rod and a spring, the fixed sleeve is fixedly connected with the inner side wall of the protective enclosing frame, one end of the sliding rod is slidably inserted into the fixed sleeve, the other end of the sliding rod is fixedly connected with the pressing plate through a connecting block, the spring is sleeved on the outside of the sliding rod, and the spring is fixedly arranged on the fixed sleeve and between the connecting blocks.

In the above-mentioned realization process, the elastic force through the spring promotes the connecting block and keeps away from fixed sleeve, drives the pressure strip and is close to the removal each other to fix the connector centre gripping, the both sides of slide bar one end are fixed with the stopper rod, and through under the buffering at spring elastic force, make the external vibrations of applying in the protective enclosure frame offset, thereby can eliminate the impact force of transmitting for the sensor body, and then improved the security of sensor body, effectively prolong its life.

In a specific implementation scheme, limiting rods are fixed on two sides of one end of each sliding rod, limiting grooves matched with the limiting rods are symmetrically formed in the side walls of the fixing sleeves, and the limiting rods penetrate through the limiting grooves and extend to the outside.

In the implementation process, the slide rod slides leftwards and rightwards in the fixed sleeve to be limited in displacement through the limiting rod and the limiting groove, and deformation caused by overlarge stress of the spring is avoided.

In a specific embodiment, the pressure strip is an arc-shaped strip, the vertical section of the pressure strip is in an L shape, and the pressure strip and the inner wall of the limiting sleeve are both fixedly provided with wear-resistant rubber pads.

In the implementation process, the inner arc side of the pressing plate can be attached to the peripheral side walls of the connector and the protective casing at the same time, in addition, upward supporting force can be provided for the connector, and the wear-resistant rubber pad can further improve the damping effect.

In a specific embodiment, the bottom of the pressing plate is provided with a supporting roller, and the top of the base is provided with a guide groove.

In the implementation process, the supporting roller supports the pressing plate, and the guide groove limits the left-right movement track of the supporting roller.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a high-precision temperature sensor resistant to high pressure according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a sensor body according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic structural view of a portion A in FIG. 2 according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a protective mounting assembly provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a protective cover according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an elastic expansion element according to an embodiment of the present disclosure from a first perspective;

fig. 7 is a schematic structural diagram of an elastic expansion element according to an embodiment of the present disclosure from a second perspective.

In the figure: 10-a sensor body; 110-protective sleeves; 111-outer protective tube; 112-inner protective tube; 120-a junction box; 121-a connector; 122-a connector lug; 123-display screen; 130-an insulating tube; 131-an insulating isolation layer; 140-a resistor body; 20-a protective mounting assembly; 210-a base; 211-a guide slot; 220-a limit sleeve; 230-a protective enclosure frame; 240-elastic expansion piece; 241-fixing the sleeve; 2411-limiting groove; 242-a slide bar; 2421-a limiting rod; 243-spring; 244-connecting block; 250-a compacting plate; 251-a support roller; 260-a protective cover; 261-a hinge; 262-locking and buckling; 263-transparent window; 264-hanging ring; 270-a mounting frame; 271-fixed block; 272-a mounting plate; 273-fastening bolts.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-7, the present application provides a high-pressure resistant high-precision temperature sensor, which includes a sensor body 10 and a protection mounting assembly 20.

Referring to fig. 2 and 3, the sensor body 10 includes a protective sleeve 110, a junction box 120, an insulating tube 130 and a resistor 140, a connector 121 is disposed at the bottom of the junction box 120, the connector 121 and the bottom end of the junction box 120 are integrally formed, one end of the protective sleeve 110 is screwed to the connector 121, the insulating tube 130 is inserted into the protective sleeve 110, the resistor 140 is mounted in the insulating tube 130, one end of the resistor 140 is electrically connected to the junction box 120, the protective sleeve 110 can bear pressure and protect, and the high-voltage resistance of the sensor body 10 is improved, the resistor 140 is supported by the insulating tube 130, and the resistor 140 can be embedded in the end of the protective sleeve 110, so that the sensor body 10 has high thermal response speed and high temperature detection sensitivity, and accuracy of a detection result is improved.

When the sensor is specifically arranged, the protective sleeve 110 comprises an outer protective tube 111 and an inner protective tube 112, the inner protective tube 112 is inserted into the outer protective tube 111, the bottom end of the inner protective tube 112 extends out of the outer protective tube 111 to form a detection probe, the bottom end of the insulating tube 130 is embedded into the inner protective tube 112, so that the resistor 140 is located at the end of the detection probe, the sensor body 10 has high thermal response speed and high temperature detection sensitivity, and the accuracy of the detection result is improved, an insulating isolation layer 131 is arranged between the insulating tube 130 and the inner protective tube 112, the insulating tube 130 has excellent electrical insulation performance and thermal conductivity, the insulating isolation layer 131 has certain thermal conductivity and excellent electrical insulation performance, one side of the junction box 120 is provided with the connector 122, the other side of the junction box 120 is obliquely provided with the display screen 123, specifically, a transmitter is arranged in the junction box 120, and the resistor 140 is electrically connected with the transmitter in the junction box 120 through a conductive wire, the temperature is detected by the resistor 140 and transmitted to the transducer through the conductive wire, the temperature signal is converted into an output signal by the transducer, and the output signal is displayed by the display screen 123 and sent to the controller through the connector 122.

Referring to fig. 1, 4 and 5, the protection installation assembly 20 includes a base 210, a position-limiting sleeve 220, a protection enclosure frame 230, elastic expansion pieces 240, pressure plates 250 and a protection cover 260, wherein the base 210 is a circular plate, the position-limiting sleeve 220 extends to the lower side through the center of the base 210, the position-limiting sleeve 220 is integrally formed or welded on the base 210, mounting brackets 270 are installed on both sides of the bottom of the base 210, the mounting brackets 270 are bolted or welded on the base 210, the protection enclosure frame 230 is fixedly connected to the top of the base 210, the protection enclosure frame 230 is circular, the protection enclosure frame 230 is bolted or welded on the edge of the top of the base 210, two groups of elastic expansion pieces 240 are symmetrically arranged, the two groups of elastic expansion pieces 240 are installed in the protection enclosure frame 230, the pressure plates 250 are relatively and fixedly arranged at one ends of the two groups of elastic expansion pieces 240 far away from the protection enclosure frame 230, the protection casing 110 is inserted in the position-limiting sleeve 220, and the connector 121 is clamped between the two pressure plates 250, through stop collar 220, the cooperation of protection enclosure frame 230, elastic expansion piece 240 and pressure strip 250 is used, it is fixed to carry out the centre gripping to sensor body 10, be favorable to realizing the quick assembly disassembly function, so that overhaul, maintenance, the installation is more convenient, and frame 230 top is enclosed in the protection to the protection is located to protection cover 260 lid, and protection cover 260 can play the effect of protection to sensor body 10, avoids influencing the detection precision of sensor body 10 because of external disturbance.

When specifically setting up, protection casing 260 one end is passed through hinge 261 and is articulated in protection enclosure frame 230 one side, the setting through hinge 261 is convenient for the opening and shutting of protection casing 260, the protection casing 260 other end is passed through hasp 262 and is enclosed frame 230 other side lock connection with the protection, enclose frame 230 top at the protection through hasp 262 with protection casing 260 locking, thereby play the effect of protection to sensor body 10, inlay the transparent window 263 that is equipped with display screen 123 adaptation on the protection casing 260 outer wall, be convenient for observe the temperature figure that display screen 123 shows under the condition of not opening protection casing 260, protection casing 260 top has set firmly link 264, the finger is detained link 264 and is conveniently opened and shut protection casing 260.

Specifically, the mounting bracket 270 includes fixed block 271 and mounting panel 272, fixed block 271 and mounting panel 272 all are the L type, fixed block 271 symmetry fixed connection in base 210 both sides, fixed block 271 bolted connection or weld in base 210, mounting panel 272 fixed connection is in fixed block 271 bottom, mounting panel 272 bolted connection or weld in fixed block 271, and mounting panel 272 runs through the spiro union and has fastening bolt 273, can fix between this device and the external device, thereby make the device installation comparatively stable.

Referring to fig. 6 and 7, the elastic expansion member 240 includes a fixing sleeve 241, a sliding rod 242 and a spring 243, the fixing sleeve 241 is fixedly connected to the inner side wall of the enclosure frame 230, the fixing sleeve 241 is bolted or welded to the enclosure frame 230, one end of the sliding rod 242 is slidably inserted into the fixing sleeve 241, the other end of the sliding rod 242 is fixedly connected to the pressing plate 250 through a connecting block 244, the spring 243 is sleeved outside the sliding rod 242, the spring 243 is fixedly arranged between the fixing sleeve 241 and the connecting block 244, two ends of the spring 243 are respectively bolted or welded to the fixing sleeve 241 and the connecting block 244, the connecting block 244 is pushed away from the fixing sleeve 241 by the elastic force of the spring 243 to drive the pressing plate 250 to move close to each other, so as to clamp and fix the connecting head 121, and the vibration applied to the enclosure frame 230 from the outside is offset by the buffering of the elastic force of the spring 243, so as to eliminate the impact force transmitted to the sensor body 10, and then the safety of the sensor body 10 is improved, the service life of the sensor body is effectively prolonged, the limiting rods 2421 are fixed on two sides of one end of the sliding rod 242, the limiting grooves 2411 matched with the limiting rods 2421 are symmetrically formed in the side wall of the fixing sleeve 241, the limiting rods 2421 penetrate through the limiting grooves 2411 and extend to the outside, the sliding rod 242 is limited in displacement through the limiting rods 2421 and the limiting grooves 2411 when sliding left and right in the fixing sleeve 241, and the spring 243 is prevented from being deformed due to overlarge stress.

In this application, pressure strip 250 is the arc, the inboard radian of pressure strip 250 and connector 121 looks adaptation, and pressure strip 250's vertical cross-section is the L type, the setting of L type structure, make pressure strip 250's inner arc side can paste the all lateral walls tightly at connector 121 and protective sleeve 110 simultaneously, can provide ascending holding power for connector 121 in addition, pressure strip 250 and stop collar 220's inner wall all has set firmly wear-resisting rubber pad, backing roll 251 is installed to pressure strip 250 bottom, base 210 top is opened there is guide way 211, backing roll 251 supports pressure strip 250, the orbit is controlled to the backing roll 251 and is carried on spacingly to the guide way 211.

The working principle of the high-pressure-resistant high-precision temperature sensor is as follows: when the device is used, the lock catch 262 is opened, the protective cover 260 is turned through the hanging ring 264 to rotate around the hinge 261, so that the protective cover 260 is opened, the two pressing plates 250 are pushed to move away from each other, the protective sleeve 110 is inserted into the limiting sleeve 220, the pressing plates 250 are loosened, the connecting block 244 is pushed to move away from the fixing sleeve 241 through the elastic force of the spring 243, the pressing plates 250 are driven to move close to each other, so that the connecting head 121 is clamped and fixed, the rapid disassembly and assembly function is realized, the overhauling, maintenance and installation are more convenient, then the protective cover 260 is locked at the top of the protective enclosure frame 230, the protective effect is realized on the sensor body 10, the detection precision of the sensor body 10 is prevented from being influenced due to external interference, finally, the device is fixed between the mounting frame 270 and external devices, the mounting of the device is stable, and the protective sleeve 110 can play roles of bearing and protecting, the high voltage resistance of the sensor body 10 is improved, the resistor body 140 is supported by the insulating tube 130, and the resistor body 140 can be embedded in the end of the protective sleeve 110, so that the sensor body 10 is high in thermal response speed and high in temperature detection sensitivity, and the accuracy of a detection result is improved.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A high-precision temperature sensor resistant to high pressure is characterized by comprising

The sensor comprises a sensor body (10), wherein the sensor body (10) comprises a protective sleeve (110), a junction box (120), an insulating tube (130) and a resistor body (140), a connector (121) is arranged at the bottom of the junction box (120), one end of the protective sleeve (110) is in threaded connection with the connector (121), the insulating tube (130) is inserted into the protective sleeve (110), the resistor body (140) is installed in the insulating tube (130), and one end of the resistor body (140) is electrically connected with the junction box (120);

the protective mounting assembly (20) comprises a base (210), a limiting sleeve (220), a protective enclosing frame (230), elastic telescopic pieces (240), compression plates (250) and a protective cover (260), wherein the limiting sleeve (220) penetrates through the center of the base (210) and extends to the lower side, mounting frames (270) are mounted on two sides of the bottom of the base (210), the protective enclosing frame (230) is fixedly connected to the top of the base (210), the elastic telescopic pieces (240) are symmetrically arranged in two groups, the two groups of elastic telescopic pieces (240) are relatively mounted in the protective enclosing frame (230), the compression plates (250) are relatively and fixedly arranged at one ends, far away from the protective enclosing frame (230), of the two groups of elastic telescopic pieces (240), the protective casing (110) is inserted in the limiting sleeve (220), and the connecting head (121) is clamped between the two compression plates (250), the protective cover (260) is covered on the top of the protective enclosure frame (230).

2. The high-pressure resistant high-precision temperature sensor according to claim 1, wherein the protective sleeve (110) comprises an outer protective tube (111) and an inner protective tube (112), the inner protective tube (112) is inserted into the outer protective tube (111), and the bottom end of the inner protective tube (112) extends out of the outer protective tube (111) to form a detection probe.

3. The high-voltage-resistant high-precision temperature sensor according to claim 2, wherein an insulating isolation layer (131) is arranged between the insulating tube (130) and the inner protection tube (112), and the bottom end of the insulating tube (130) is embedded in the inner protection tube (112).

4. The high-precision temperature sensor with high pressure resistance as claimed in claim 1, wherein the junction box (120) is provided with a connector lug (122) on one side, and the display screen (123) is obliquely arranged on the other side of the junction box (120).

5. The high-precision high-voltage-resistant temperature sensor according to claim 4, wherein one end of the protective cover (260) is hinged to one side of the protective enclosure frame (230) through a hinge (261), the other end of the protective cover (260) is connected with the other side of the protective enclosure frame (230) through a lock catch (262) in a locking manner, a transparent window (263) matched with the display screen (123) is embedded in the outer wall of the protective cover (260), and a hanging ring (264) is fixedly arranged at the top of the protective cover (260).

6. The high-precision temperature sensor resistant to high pressure according to claim 1, wherein the mounting frame (270) comprises a fixing block (271) and a mounting plate (272), the fixing block (271) and the mounting plate (272) are both L-shaped, the fixing block (271) is symmetrically and fixedly connected to two sides of the base (210), the mounting plate (272) is fixedly connected to the bottom of the fixing block (271), and the mounting plate (272) is screwed with a fastening bolt (273).

7. The high-pressure-resistant high-precision temperature sensor according to claim 1, wherein the elastic expansion member (240) comprises a fixed sleeve (241), a sliding rod (242) and a spring (243), the fixed sleeve (241) is fixedly connected to the inner side wall of the protective enclosure frame (230), one end of the sliding rod (242) is slidably inserted into the fixed sleeve (241), the other end of the sliding rod (242) is fixedly connected to the pressing plate (250) through a connecting block (244), the spring (243) is sleeved outside the sliding rod (242), and the spring (243) is fixedly arranged between the fixed sleeve (241) and the connecting block (244).

8. The high-pressure-resistant high-precision temperature sensor according to claim 7, wherein a limiting rod (2421) is fixed on two sides of one end of the sliding rod (242), a limiting groove (2411) matched with the limiting rod (2421) is symmetrically formed in the side wall of the fixing sleeve (241), and the limiting rod (2421) penetrates through the limiting groove (2411) and extends to the outside.

9. The high-pressure-resistant high-precision temperature sensor according to claim 1, wherein the pressure plate (250) is an arc-shaped plate, the vertical section of the pressure plate (250) is L-shaped, and wear-resistant rubber pads are fixedly arranged on the inner walls of the pressure plate (250) and the limiting sleeve (220).

10. The high-precision temperature sensor of claim 1, wherein the bottom of the pressure plate (250) is provided with a support roller (251), and the top of the base (210) is provided with a guide groove (211).