A bimetallic thermometer with electronic auxiliary calibration

Abstract

The present invention discloses a bimetallic thermometer with electronic auxiliary calibration, including an outer shell, a sealed cavity is provided inside the outer shell, and a bimetallic sensing part is provided in the cavity. The bimetallic sensing part includes a display ring rotatably connected to the middle of the heat-insulating cavity, a connecting seat located at the bottom of the heat-insulating cavity, and a bimetallic sensing sheet located between the connecting seat and the display ring, wherein the deformation part is spiral and coaxially arranged on the outer ring of the display ring, and the first connecting part is sealed to connect the heat-conducting mechanism and the heat source to conduct heat. It also includes an electronic auxiliary part, which has a connecting arm arranged in an array outside the display ring, and an electromagnetic driving mechanism is provided between the connecting arm and the outer shell, including a main permanent magnet and a winding coil, which are mutually attracted by the output magnetic force of the control power supply; a position indicating block is coaxially arranged on the outer ring of the display ring, and a position indicating mechanism is provided between the position indicating block and the outer shell, and a secondary permanent magnet and a Hall element are used, and the displacement of the secondary permanent magnet relative to the Hall element can be output through a potential difference detection circuit.

Description

Technical Field

[0001] The invention relates to an electronically assisted calibrated bimetallic thermometer, belonging to the field of thermometers. Background Art

[0002] Compared with infrared and Hall types, the bimetallic thermometer's contact part with the temperature measuring medium is mainly made of metal. Due to its characteristics, the bimetallic thermometer has a wide range of environmental applications and strong anti-fouling performance. However, because it is a bimetallic thermometer, its accuracy is inferior to that of a pure electronic type. During the production and manufacturing process, the thermometer will inevitably have a certain initial error due to factors such as process level and component accuracy. In addition, during long-term use, the thermometer will be affected by various factors such as changes in ambient temperature and humidity, mechanical vibration, and component aging, which will cause its measurement accuracy to gradually decrease. Therefore, an electronic monitoring and calibration device for the thermometer is needed to collect the working conditions and calibrate the errors of the thermometer in real time, while reducing data fluctuations caused by mechanical vibration. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the technical problem that the bimetallic thermometer in the prior art cannot be calibrated in real time and is easily affected by vibration, and to provide a bimetallic thermometer with electronic auxiliary calibration.

[0004] The technical solution adopted by the present invention to solve its technical problem is: An electronically assisted calibration bimetallic thermometer, comprising: An outer shell, wherein a sealed cavity is arranged inside the outer shell, and a bimetallic sensing part is arranged in the sealed cavity; The bimetallic sensing part includes a display ring rotatably connected to the middle of the heat-insulating cavity and a connection seat arranged at the bottom of the heat-insulating cavity; the bimetallic sensing part also includes a bimetallic sensing sheet arranged between the connection seat and the display ring, the bimetallic sensing sheet includes a first connection portion fixed to the connection seat and a second connection portion fixed to the display ring, a spiral deformation portion is arranged between the first connection portion and the second connection portion, and the deformation portion is coaxially arranged on the outer ring of the display ring; the bimetallic sensing sheet is welded by two groups of metal sheets with different thermal strain amounts; a heat-conducting mechanism is sealed and connected to the first connection portion, and the heat-conducting mechanism is in heat-conducting contact with a heat source; The electronic auxiliary part includes a connecting arm arranged in an array outside the display ring; the electronic auxiliary part also includes an electromagnetic driving mechanism arranged between the connecting arm and the outer shell, the electromagnetic driving mechanism includes a main permanent magnet arranged on the connecting arm and a winding coil arranged on the outer shell, the winding coil outputs magnetic force through a control power supply, and the main permanent magnet and the winding coil are mutually attracted by magnetic force; a position indicating block is also coaxially arranged on the outer ring of the display ring through the connecting arm, a position indicating mechanism is arranged between the position indicating block and the outer shell, the position indicating mechanism includes a secondary permanent magnet arranged on the position indicating block and a Hall element arranged on the inner wall of the outer shell, the Hall element is connected to a potential difference detection circuit, and the displacement of the secondary permanent magnet relative to the Hall element is output through the potential difference detection circuit.

[0005] As a further improvement of the present invention, a heat-insulating cavity is connected to the bottom of the sealed cavity, a heat-conducting connector is arranged in the heat-conducting cavity, the heat-conducting connector includes a heat-conducting shell, the bimetallic sensing sheet passes through the first connecting part and is inserted into one axial end of the heat-conducting shell, the heat-conducting input end of the heat-conducting mechanism is inserted into the other axial end of the heat-conducting shell, and the interior of the heat-conducting shell is filled with a heat-conducting medium.

[0006] As a further improvement of the present invention, the heat-conducting mechanism includes a support sleeve fixedly connected to the bottom of the insulation cavity, a heat-conducting tube is fixed at the front end of the support sleeve, a heat-conducting rod is brazed and fixed in the heat-conducting tube, and the end of the heat-conducting rod is inserted into the heat-conducting shell; an insulation sleeve made of a soft insulation material of a foaming material is also arranged between the rear end inner wall of the support sleeve and the heat-conducting rod.

[0007] As a further improvement of the present invention, the end array of the heat-conducting rod is provided with a plurality of elastic heat-conducting wires penetrating the heat-conducting rods, and the heat-conducting wires are in contact with the heat-conducting medium.

[0008] As a further improvement of the present invention, the heat-insulating cavity is filled with heat-insulating material, and the heat-conducting shell is suspended and fixed in the heat-insulating cavity by means of a soft heat-insulating material made of foam material.

[0009] As a further improvement of the present invention, a shock-absorbing frame is also provided on the inner wall of the outer shell, a floating frame is provided on the inner wall of the shock-absorbing frame, the bimetallic sensing sheet is coaxially arranged in the middle of the floating frame, and a first thermal insulation layer is filled between the shock-absorbing frame and the floating frame, and the first thermal insulation layer is a soft thermal insulation material made of foam material.

[0010] As a further improvement of the present invention, a plurality of supporting protrusions are arranged in a circular array on the inner wall of the shock absorbing frame, and the supporting protrusions extend toward the outer side wall of the floating frame.

[0011] As a further improvement of the present invention, a plurality of connection openings are arranged in a circular array on the side wall of the shell, a sealing cover is sealed and fixedly connected to the connection opening, a support seat is arranged on the sealing cover, a winding coil is fixed on the support seat by structural adhesive, and the support seat is embedded between the floating frame and the shock absorbing frame.

[0012] As a further improvement of the present invention, an arc-shaped support sheet is embedded between the floating frame and the shock-absorbing frame, a connecting column penetrating the shell is arranged on the top of the shell, the connecting column and the support sheet are fixed as a whole, and the Hall element array is arranged on the support sheet.

[0013] As a further improvement of the present invention, the lateral sides of the indicating block are fixedly connected to the connecting arms via arc-shaped connecting rods.

[0014] The beneficial effects of the present invention are: 1. The present invention provides a set of electromagnetically assisted connecting arms on the existing bimetallic thermometer. The connecting arms are dynamically locked by an electromagnetic mechanism, and the swing amplitude and starting position of the thermometer can be dynamically controlled, thereby eliminating the vibration of the thermometer and calibrating the practice.

[0015] 2. The heat insulation cavity separates the heat conduction input end of the bimetallic sensor to prevent the heat insulation cavity from overheating and affecting the life of the bimetallic sensor, and also reduces the impact of high-frequency vibration of the heat conduction input end on the bimetallic sensor.

[0016] 3. The support sleeve structure is used at the heat input end, which gradually improves the strength of the heat input end and limits the vibration of the heat input end. At the same time, the heat pipe at the front end ensures the strength while ensuring the thermal conductivity, and the heat sleeve at the rear end reduces the influence of the heat dissipation of the shell on the temperature of the heat conducting rod.

[0017] 4. The elastic thermal wire expands the contact area between the thermally conductive rod and the thermally conductive medium. At the same time, the elastic structure does not easily affect the insertion and removal of the thermally conductive rod from the thermally conductive housing, making maintenance easier.

[0018] 5. The suspended fixation of the heat-conducting shell can further reduce the influence of the vibration of the heat-conducting mechanism fixed to the pipeline on the bimetallic sensing piece, and further improve the stability of the thermometer.

[0019] 6. The shock-absorbing frame and the floating frame can ensure the stability of the thermal insulation material, and it is not easy for the thermal conductive material to fall off and affect the normal operation of the bimetallic sensor inside the thermometer; and it can increase the adhesion strength of the thermal insulation material.

[0020] 7. The supporting protrusions can further ensure the stability of the foam material and increase the attachment area. In addition, the supporting protrusions can also realize elastic support between the shock-absorbing frame and the floating frame, reduce the impact of vibration on the foam material, and reduce the possibility of damage to the foam material.

[0021] 8. The sealing cover can conveniently maintain and replace the winding coil, and it is convenient to replace the winding coil with different magnetic force ranges to meet different sensitivity requirements.

[0022] 9. The arc-shaped support sheet can achieve stable support for the Hall element, ensure the accuracy of the position between the Hall element and the auxiliary permanent magnet, and reduce the influence of the floating frame on the displacement of the Hall element.

[0023] 10. The connecting rod can ensure the connection rigidity of the indicating block relative to the connecting arm, and can also reduce the total weight of the connecting arm, ensure the floating accuracy of the bimetallic sensor sheet, and ensure the accurate collection of the swing angle of the connecting arm by the Hall element. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a cross-sectional schematic diagram of the present invention; Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A; Figure 3 yes Figure 1 A partial enlarged schematic diagram of point B in the middle; Figure 4 yes Figure 1 A partial enlarged schematic diagram of point C in the middle.

[0026] In the figure: 1, outer shell; 2, shock absorbing frame; 3, floating frame; 4, supporting protrusion; 5, first heat insulation layer; 6, sealing cover; 7, supporting seat; 8, rotating seat; 9, display ring; 10, bearing; 11, bimetallic induction sheet; 12, connecting arm; 13, connecting platform; 14, main permanent magnet; 15, structural adhesive; 16, winding coil; 17, clamping block; 18, counterweight block; 19, connecting seat; 20, position indicating block; 21, auxiliary permanent magnet; 22, connecting rod; 23, Hall element; 24 , support plate; 25, connecting column; 26, fixing ring; 27, insulating sleeve; 28, thermal insulation cover; 29, connecting flange; 30, thermal insulation cavity; 31, plug sleeve; 32, support sleeve; 33, heat pipe; 34, thermal conductive rod; 35, brazing; 36, thermal insulation sleeve; 37, positioning sleeve; 38, positioning rubber sleeve; 39, second connecting part; 40, first connecting part; 41, heat-conducting shell; 42, heat-conducting medium; 43, thermal conductive wire; 44, support ring; 45, conductive connecting ring; 46, plug socket. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] like Figure 1 , a bimetallic thermometer with electronically assisted calibration, comprising: The outer shell 1 has a sealed cavity inside, and a bimetallic sensing part is arranged in the sealed cavity; Bimetallic sensing part, a rotating seat 8 is arranged in the middle of the sealed cavity, the bimetallic sensing part includes a display ring 9 rotatably connected to the rotating seat 8 through a bearing 10 and a connecting seat 19 of a sleeve structure arranged at the bottom of the heat insulation cavity 30; the bimetallic sensing part also includes a bimetallic sensing sheet 11 arranged between the connecting seat 19 and the display ring 9, the bimetallic sensing sheet 11 includes a first connecting portion 40 fixed to the connecting seat 19 and a second connecting portion 39 fixed to the display ring 9, a spiral deformation portion is arranged between the first connecting portion 40 and the second connecting portion 39, and the deformation portion is coaxially arranged on the outer ring of the display ring 9; a clamping block 17 is arranged at one radial end of the display ring 9, and a counterweight block 18 symmetrical to the clamping ring is arranged at the other radial end of the display ring 9, and the second connecting portion 39 is embedded in the clamping block 17; the bimetallic sensing sheet 11 is welded by two groups of metal sheets with different thermal strains; a heat conduction mechanism is sealed and connected to the first connecting portion 40, and the heat conduction mechanism is in thermal contact with the heat source; The electronic auxiliary part includes a connecting arm 12 arranged in an array outside the display ring 9; the electronic auxiliary part also includes an electromagnetic driving mechanism arranged between the connecting arm 12 and the outer shell 1, the electromagnetic driving mechanism includes a main permanent magnet 14 arranged on the connecting arm 12 and a winding coil 16 arranged on the outer shell 1, the winding coil 16 outputs magnetic force through a driving circuit, the main permanent magnet 14 is fixed by a connecting platform 13 integrally arranged on the connecting arm 12, the main permanent magnet 14 is embedded in the connecting platform 13, and the main permanent magnet 14 is connected to the winding coil 16 through magnetic force. 6 are adsorbed on each other; a position indicating block 20 is coaxially arranged on the outer ring of the display ring 9 through the connecting arm 12, and the lateral sides of the indicating block are fixedly connected to the connecting arm 12 through the arc-shaped connecting rods 22. A position indicating mechanism is arranged between the position indicating block 20 and the outer shell 1, and the position indicating mechanism includes a secondary permanent magnet 21 arranged on the position indicating block 20 and a Hall element 23 arranged on the inner wall of the outer shell 1. The Hall element 23 is connected to the potential difference detection circuit, and the displacement of the secondary permanent magnet 21 relative to the Hall element 23 is output through the potential difference detection circuit.

[0029] like Figure 1 and Figure 2A heat-insulating cover 28 is connected to the bottom of the sealed cavity through a connecting flange 29, a heat-insulating cavity 30 is arranged between the heat-insulating cover 28 and the outer shell 1, a heat-conducting connector is arranged in the heat-insulating cavity 30, and the heat-conducting connector includes a heat-conducting shell 41, the heat-insulating cavity 30 is filled with a heat-insulating material, and the heat-conducting shell 41 is suspended and fixed in the heat-insulating cavity 30 through a soft heat-insulating material of a foaming material, the bimetallic sensor sheet 11 passes through the first connecting portion 40 and is inserted into one axial end of the heat-conducting shell 41, the heat-conducting input end of the heat-conducting mechanism is inserted into the other axial end of the heat-conducting shell 41, and the heat-conducting shell 41 is connected to the heat-conducting shell 41. 1 is filled with a heat-conducting medium 42; the heat-conducting mechanism includes a support sleeve 32 fixedly connected to the bottom of the heat-insulating shell 28, a plug sleeve 31 is integrally fixed to the front end of the heat-insulating shell 28, the support sleeve 32 penetrates the heat-insulating shell 28 through the plug sleeve 31, a heat-conducting pipe 33 is fixed to the front end of the support sleeve 32, a heat-conducting rod 34 is fixed by brazing 35 in the heat-conducting pipe 33, the end of the heat-conducting rod 34 is inserted into the heat-conducting shell 41, and the end of the heat-conducting rod 34 is arrayed with a plurality of elastic heat-conducting wires 43 penetrating the heat-conducting rod 34, and the heat-conducting wires 43 are in contact with the heat-conducting medium 42, such as Figure 4 The front end of the heat-conducting rod 34 is fixed to the front end of the heat-conducting pipe 33 through an aluminum positioning sleeve 37; an insulating sleeve 36 made of a soft insulating material of a foam material is also arranged between the rear end inner wall of the support sleeve 32 and the heat-conducting rod 34; a positioning rubber sleeve 38 made of a rubber material is arranged between the end of the support sleeve 32 and the heat-conducting shell 41, and the positioning rubber sleeve 38 is used to control the size of the heat-conducting rod 34 inserted into the heat-conducting shell 41.

[0030] A shock absorbing frame 2 is also provided on the inner wall of the outer shell 1, and a floating frame 3 is provided on the inner wall of the shock absorbing frame 2. The bimetallic sensing sheet 11 is coaxially arranged in the middle of the floating frame 3, and a plurality of supporting protrusion sheets 4 are provided in a circular array on the inner wall of the shock absorbing frame 2. The supporting protrusion sheets 4 extend toward the outer wall of the floating frame 3. A first thermal insulation layer 5 is filled between the shock absorbing frame 2 and the floating frame 3, and the first thermal insulation layer 5 is a soft thermal insulation material made of foam material.

[0031] Two groups of connection openings are symmetrically arranged on the side wall of the shell, and a sealing cover 6 is sealed and fixedly connected to the connection opening. A support seat 7 is arranged on the sealing cover 6, and a winding coil 16 is fixed on the support seat 7 by structural glue 15. The support seat 7 is embedded between the floating frame 3 and the shock absorbing frame 2.

[0032] like Figure 1 and Figure 3An arc-shaped support sheet 24 is embedded between the floating frame 3 and the shock-absorbing frame 2, a socket 46 is arranged on the top of the shell, a connecting column 25 that penetrates the shell is fixed in the middle of the socket 46, the connecting column 25 and the support sheet 24 are fixed as a whole, the Hall element 23 array is arranged on the support sheet 24, a connecting hole is arranged in the connecting column 25, an insulating sleeve 27 is arranged in the connecting hole, a plurality of conductive connecting rings 45 are embedded on the inner wall of the insulating sleeve 27, and the conductive connecting rings 45 are connected to the Hall element 23 and the winding coil 16 through a wire; a fixing ring 26 coaxial with the socket 46 is arranged on the top of the shock-absorbing frame 2, a plurality of annular supporting rings 44 are arranged on the inner wall of the fixing ring 26, and the bottom of the connecting column 25 is fixed relative to the fixing ring 26 by the supporting ring 44.

[0033] When in use, the thermometer is fixed to the pipeline as a whole through the threaded structure preset on the plug-in sleeve 31 or through interference fit, and the support sleeve 32 and the heat-conducting tube 33 are inserted into the temperature measuring medium; then the heat is transmitted to the heat-conducting rod 34 through the heat-conducting tube 33 and the brazing 35 hull, and the heat of the heat-conducting rod 34 is exchanged between the heat-conducting wire 43 and the first connecting part 40 of the bimetallic sensor sheet 11 in the heat-conducting medium 42 inside the heat-conducting shell 41, so that the bimetallic sensor sheet 11 is heated. Then, because the bimetallic sensor sheet 11 is made of two metal sheets with different thermal expansion coefficients, the metal sheet located on the inner side of the spiral will increase the radius of the spiral and reduce the spiral angle due to the larger expansion coefficient. , and drives the display ring 9 to deflect through the second connecting part 39, and the deflection data of the display ring 9 is collected through the relative movement of the Hall element 23 and the auxiliary permanent magnet 21, so that the Hall element 23 can be replaced by the metal heat-conducting structure to contact the high-temperature temperature measuring medium; at the same time, the winding coil 16 can apply magnetic force to the main permanent magnet 14 to provide a certain starting resistance for the display ring 9, or the starting position of the display ring 9 can be adjusted through the winding coil 16. The former starting resistance can reduce the high-frequency jitter of the bimetallic strip caused by the vibration of the pipeline, and prevent the inaccuracy of the temperature display data caused by high-frequency jitter. In addition, the adjustment of the inspiration position can also quickly and conveniently perform dynamic calibration of the thermometer.

[0034] When assembling the structure, the upper half is assembled first, and the bimetallic induction sheet 11 is fixed by the clamping block 17. Then the display ring 9 is fixed to the rotating seat 8 at one axial end of the outer shell 1 through the bearing 10, and the main permanent magnet 14 is fixed to the connecting arms 12 on both sides of the display ring 9, and the position indicating block 20 is connected and the auxiliary permanent magnet 21 is fixed through the connecting rod 22; and the shock absorbing frame 2 and the floating frame 3 are placed in the outer shell 1, and the support sheet 24 is pre-set to the middle of the plug-in seat 46 through the connecting column 25, and the Hall element 23 is pre-fixed on the support sheet 24, and then the foam material is filled to make the Hall element 23. When filling the first insulation layer 5, it is necessary to reserve a wire layer in the first insulation layer 5 to facilitate the wiring of the permanent magnet. Then, the permanent magnet is installed through the sealing covers 6 on both sides of the outer shell 1. During the installation process, the wires reserved in the wire layer are connected to the permanent magnet. Then, the insulating sleeve 27 is installed in the top connecting column 25. Before installation, the winding coil 16, the Hall element 23 and the conductive connecting ring 45 are connected by welding. After the connection is complete, the insulating sleeve 27 is embedded in the connecting column 25. When connecting later, the line connection can be achieved by plugging the plug and the insulating sleeve 27.

[0035] Next is the assembly of the lower half. First, the heat-conducting pipe 33 and the heat-conducting rod 34 are fixed by brazing 35. Then, the heat-conducting pipe 33 is plugged into the support sleeve 32 and the insulation sleeve 36 is filled to fix the support sleeve 32 and the heat-conducting pipe 33. After placing a positioning rubber sleeve 38 at the end of the support sleeve 32, the support sleeve 32 is inserted into the plug-in sleeve 31 so that the end of the heat-conducting rod 34 is embedded in the heat-conducting shell 41. Then, the heat-conducting medium 42 is filled in the heat-conducting shell 41, and the insulation shell 28 is installed through the connecting flange 29. While installing, the first connecting portion 40 of the bimetallic sensor sheet 11 is also inserted into the heat-conducting shell 41, and the insulation shell 28 is filled with foaming material. After the insulation shell 28 is fixed, the expansion of the foaming material will fill the insulation cavity 30 space of the entire insulation shell 28 to fix the heat-conducting shell 41.

[0036] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electronically assisted calibration bimetallic thermometer, characterized in that: include: An outer shell (1), wherein a sealed cavity is provided inside the outer shell (1), and a bimetallic sensing part is provided in the sealed cavity; A bimetallic sensing part, the bimetallic sensing part comprising a display ring (9) rotatably connected to the middle of the heat-insulating cavity (30) and a connecting seat (19) arranged at the bottom of the heat-insulating cavity (30); the bimetallic sensing part also comprises a bimetallic sensing sheet (11) arranged between the connecting seat (19) and the display ring (9), the bimetallic sensing sheet (11) comprising a first connecting portion (40) fixed to the connecting seat (19) and a second connecting portion (39) fixed to the display ring (9), a spiral deformation portion being arranged between the first connecting portion (40) and the second connecting portion (39), the deformation portion being coaxially arranged on the outer ring of the display ring (9); the bimetallic sensing sheet (11) being welded from two groups of metal sheets having different thermal strain amounts; a heat-conducting mechanism being sealed and connected to the first connecting portion (40), the heat-conducting mechanism being in heat-conducting contact with a heat source; An electronic auxiliary part, the electronic auxiliary part comprising a connecting arm (12) arranged in an array outside the display ring (9); the electronic auxiliary part also comprising an electromagnetic driving mechanism arranged between the connecting arm (12) and the outer shell (1), the electromagnetic driving mechanism comprising a main permanent magnet (14) arranged on the connecting arm (12) and a winding coil (16) arranged on the outer shell (1), the winding coil (16) outputting magnetic force through a driving circuit, and the main permanent magnet (14) and the winding coil (16) being mutually attracted by the magnetic force; a position indicating block (20) is also coaxially arranged on the outer ring of the display ring (9) through the connecting arm (12), a position indicating mechanism is arranged between the position indicating block (20) and the outer shell (1), the position indicating mechanism comprising a secondary permanent magnet (21) arranged on the position indicating block (20) and a Hall element (23) arranged on the inner wall of the outer shell (1), the Hall element (23) being connected to a potential difference detection circuit, and the displacement of the secondary permanent magnet (21) relative to the Hall element (23) is outputted through the potential difference detection circuit.

2. The electronically assisted calibration bimetallic thermometer according to claim 1, characterized in that: A heat insulating cavity (30) is connected to the bottom of the sealed cavity. A heat conductive connector is arranged in the heat insulating cavity (30). The heat conductive connector comprises a heat conductive shell (41). The bimetallic sensing sheet (11) passes through a first connecting portion (40) and is inserted into one axial end of the heat conductive shell (41). The heat conductive input end of the heat conductive mechanism is inserted into the other axial end of the heat conductive shell (41). The heat conductive shell (41) is filled with a heat conductive medium (42).

3. The electronically assisted calibration bimetallic thermometer according to claim 2, characterized in that: The heat conduction mechanism comprises a support sleeve (32) fixedly connected to the bottom of the heat insulation cavity (30); a heat conduction pipe (33) is fixed at the front end of the support sleeve (32); a heat conduction rod (34) is fixed by brazing (35) inside the heat conduction pipe (33); the end of the heat conduction rod (34) is inserted into the heat conduction housing (41); and a heat insulation sleeve (36) made of a soft heat insulation material of a foaming material is also provided between the rear end inner wall of the support sleeve (32) and the heat conduction rod (34).

4. The electronically assisted calibration bimetallic thermometer according to claim 3, characterized in that: The end array of the heat-conducting rod (34) is provided with a plurality of elastic heat-conducting wires (43) penetrating the heat-conducting rod (34), and the heat-conducting wires (43) are in contact with the heat-conducting medium (42).

5. The electronically assisted calibration bimetallic thermometer according to claim 2, characterized in that: The heat insulation cavity (30) is filled with heat insulation material, and the heat conductive shell (41) is suspended and fixed in the heat insulation cavity (30) by means of a soft heat insulation material made of foam material.

6. The electronically assisted calibration bimetallic thermometer according to claim 1, characterized in that: A shock absorbing frame (2) is also provided on the inner wall of the outer shell (1), a floating frame (3) is provided on the inner wall of the shock absorbing frame (2), a bimetallic sensing sheet (11) is coaxially arranged in the middle of the floating frame (3), a first heat insulating layer (5) is filled between the shock absorbing frame (2) and the floating frame (3), and the first heat insulating layer (5) is a soft heat insulating material made of foaming material.

7. The electronically assisted calibration bimetallic thermometer according to claim 6, characterized in that: A plurality of supporting protrusions (4) are arranged in a circular array on the inner wall of the shock absorbing frame (2), and the supporting protrusions (4) extend towards the outer side wall of the floating frame (3).

8. The electronically assisted calibration bimetallic thermometer according to claim 6, characterized in that: A plurality of connection openings are arranged in an annular array on the side wall of the housing, a sealing cover (6) is sealed and fixedly connected to the connection opening, a support seat (7) is arranged on the sealing cover (6), a winding coil (16) is fixed on the support seat (7) by means of structural adhesive (15), and the support seat (7) is embedded between the floating frame (3) and the shock absorbing frame (2).

9. The electronically assisted calibration bimetallic thermometer according to claim 6, characterized in that: An arc-shaped support sheet (24) is embedded between the floating frame (3) and the shock-absorbing frame (2), a connecting column (25) penetrating the shell is arranged on the top of the shell, the connecting column (25) and the support sheet (24) are fixed as a whole, and an array of Hall elements (23) is arranged on the support sheet (24).

10. The electronically assisted calibration bimetallic thermometer according to claim 1, characterized in that: The lateral sides of the indicating block are fixedly connected to the connecting arm (12) via an arc-shaped connecting rod (22).

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