Thermal control instrument capable of realizing high-temperature transition

By setting the connection between the temperature transfer block and the temperature sensor in the measuring part of the thermal control instrument, and transferring the temperature of the high-temperature steam to the temperature transfer block through the external part, the instrument damage caused by the sensor being directly contacted with the high-temperature airflow is solved, and the high-temperature steam is realized Stable temperature measurement and instrument protection.

CN222505641UActive Publication Date: 2025-02-18SHCCIG YULIN CHEM CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420559164.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-21
Publication Date
2025-02-18
Estimated Expiration
2034-03-21

AI Technical Summary

Technical Problem

When existing thermal control instruments measure high-temperature airflow, the sensors directly contact the high-temperature airflow, causing the temperature to rise too quickly, which may cause the instrument to be damaged.

Method used

A thermal control instrument including a mounting part, an external part and a measuring part is designed. The measuring part is equipped with a temperature sensor, and the temperature transmission block is connected to the sensor. A through hole is provided on the temperature transmission block. The two groups of external connections are connected to the through hole of the temperature transmission block through the installation part to ensure the stable installation of the temperature transmission block and through the transmission. The temperature block transfers the temperature of the high-temperature steam to the sensor.

Benefits of technology

It effectively avoids direct contact between high-temperature steam and temperature sensor, prevents too fast temperature rise and instrument damage, and ensures the accuracy of temperature measurement of high-temperature steam.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222505641U_ABST
    Figure CN222505641U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of thermal control instruments, and discloses a thermal control instrument capable of high-temperature transition, which is characterized in that a measuring instrument body and a temperature transfer block are assembled in a mounting part, a temperature sensor is arranged in the measuring instrument body, the temperature transfer block is connected with the temperature sensor in the measuring instrument body, and the temperature transfer block is provided with a through hole; the two groups of external connection parts are respectively connected into the through holes of the temperature transfer block through the mounting parts, so that the stable mounting of the temperature transfer block in the measuring meter body is ensured, and meanwhile, the temperature transfer block assists the two groups of external connection parts in transmitting high-temperature steam into a temperature sensor in the measuring meter body, so that the temperature loss of the high-temperature steam is avoided; and the instantaneous temperature rise caused by direct contact between the high-temperature steam and the temperature sensor is avoided, so that the instrument is protected.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of thermal control instruments, in particular to a thermal control instrument capable of high temperature transition. Background Art

[0002] There are many types of thermal control instruments currently used in thermal power plants, such as thermometers, pressure gauges, oxygen meters, water level meters, material level meters, ammeters, voltmeters and flow meters, etc. Some of these instruments, such as pressure gauges and thermometers, are connected to pipes through threads, so that the high-temperature steam flowing through can be measured and processed by sensors. However, based on the prior art, it is found that when the existing thermal control instruments are in use, the sensors required for their measurements are usually directly installed in the flow path of the high-temperature airflow, so that they are in direct contact with the high-temperature airflow during the measurement process, resulting in excessively rapid temperature rise and explosion, which in turn causes damage to the instrument. Utility Model Content

[0003] In order to overcome the defects of the above-mentioned prior art, the purpose of the utility model is to provide a thermal control instrument capable of high-temperature transition, so as to solve the technical problem that when the existing thermal control instruments are in use, the sensors required for measurement are usually directly installed in the flow path of the high-temperature airflow, so that they are in direct contact with the high-temperature airflow during the measurement process, resulting in the temperature rising too fast and bursting, thereby causing damage to the instrument.

[0004] The utility model is realized by the following technical solutions:

[0005] A thermal control instrument capable of high-temperature transition comprises a mounting portion, two groups of external connecting portions and a measuring portion, wherein the measuring portion is assembled in the mounting portion, the two groups of external connecting portions are respectively arranged on two sides of the mounting portion, and one end of the two groups of external connecting portions are respectively connected to the measuring portion through the mounting portion, and the other ends of the two groups of external connecting portions are connected to an external conveying pipe for conveying high-temperature steam, the measuring portion comprises an upper sealing cover, a measuring meter body and a temperature transfer block, the upper sealing cover is arranged on the top of the mounting portion, a temperature sensor is arranged in the measuring meter body, the measuring meter body is arranged at the bottom of the upper sealing cover and is located in the mounting portion; the temperature transfer block is located in the mounting portion, and the temperature transfer block is connected to the temperature sensor in the measuring meter body, the temperature transfer block is provided with a through hole, and the two groups of external connecting portions are respectively connected to the through hole of the temperature transfer block through the mounting portion.

[0006] Preferably, the mounting part includes an mounting outer shell, an mounting inner shell and a thermal insulation inner shell, the mounting inner shell is inserted into the mounting outer shell, the thermal insulation inner shell is inserted into the mounting inner shell, the upper cover is arranged on the mounting outer shell, the measuring meter body and the temperature transfer block are located in the thermal insulation inner shell, and first connecting through holes are coaxially opened on both sides of the mounting outer shell, the connecting through holes are coaxially corresponding to the through holes of the temperature transfer block, and the two groups of external connection parts are connected to the through holes of the temperature transfer block in sequence through the first connecting through holes.

[0007] Furthermore, a plug-in slot is provided in the heat-insulating inner shell, the measuring meter body is located in the heat-insulating inner shell and abuts against the top of the plug-in slot, the temperature transfer block is located in the plug-in slot, the plug-in slot corresponds to the position of the first connecting through hole, and second connecting through holes are respectively provided on both sides of the plug-in slot. The second connecting through hole is coaxially arranged with the first connecting through hole and the through hole of the temperature transfer block, and is used to penetrate the two groups of external parts and connect to the through hole of the temperature transfer block.

[0008] Furthermore, the first connecting through hole, the second connecting through hole and the through hole of the temperature transfer block are provided with internal threads, and the two sets of external connection parts are threadedly connected to the first connecting through hole, the second connecting through hole and the through hole of the temperature transfer block.

[0009] Furthermore, the internal structure of the plug-in slot corresponds to the external structure of the temperature transfer block.

[0010] Further, the inner diameter of the mounting outer shell corresponds to the outer diameter of the mounting inner shell, and the inner diameter of the mounting inner shell corresponds to the outer diameter of the heat-insulating inner shell.

[0011] Furthermore, the external connection part includes an external connection plate and a docking joint. The external connection plate is fixedly arranged on the mounting shell. An assembly through hole is provided at a position of the external connection plate corresponding to the first connecting through hole. One end of the docking joint is connected to the through hole of the temperature transfer block through the assembly through hole via the first connecting through hole, and the other end is connected to an external delivery pipe.

[0012] Furthermore, the plate-shaped surface of the external board corresponds to the outer wall of the mounting shell, and the external board is fixed to the outer wall of the mounting shell by screws.

[0013] Furthermore, an annular protrusion is provided on the inner wall of the upper cover, and a disc-shaped transparent plate is provided on the annular protrusion, and the measuring meter body is threadedly assembled on the upper cover.

[0014] Furthermore, a steering plate is provided between the upper cover and the measuring meter body, the steering plate is provided with a through hole, the steering plate is threadedly connected to the inner wall of the upper cover, and is located below the disc-shaped transparent plate.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The utility model provides a thermal control instrument capable of high-temperature transition. The measuring meter body and a temperature transfer block are assembled in a mounting portion. A temperature sensor is arranged in the measuring meter body. The temperature transfer block is connected to the temperature sensor in the measuring meter body. A through hole is arranged on the temperature transfer block. Two groups of external connecting parts are respectively connected to the through holes of the temperature transfer block through the mounting portion. This ensures that the temperature transfer block is stably installed in the measuring meter body. At the same time, the temperature transfer block assists the two groups of external connecting parts in transmitting high-temperature steam to the temperature sensor in the measuring meter body, thereby avoiding temperature loss of the high-temperature steam and avoiding instantaneous temperature rise of the high-temperature steam due to direct contact with the temperature sensor, so as to protect the instrument.

[0017] Furthermore, the mounting part includes an mounting outer shell, an mounting inner shell and an insulating inner shell. The mounting inner shell is inserted into the mounting outer shell, the insulating inner shell is inserted into the mounting inner shell, the measuring meter body and the temperature transfer block are located in the insulating inner shell, and the mounting outer shell, the mounting inner shell and the insulating inner shell are respectively provided with first connecting through holes coaxially corresponding to each other on both sides. The connecting through holes are coaxially corresponding to the through holes of the temperature transfer block, and the two groups of external connection parts are connected to the through holes of the temperature transfer block in turn through the first connecting through holes to avoid the loss of high-temperature steam temperature.

[0018] Furthermore, the first connecting through hole, the second connecting through hole and the through hole of the temperature transfer block are provided with internal threads, and the two sets of external connection parts are threadedly connected to the first connecting through hole, the second connecting through hole and the through hole of the temperature transfer block, thereby ensuring the stability of the assembly of the external connection parts with the mounting part and the measuring part.

[0019] Furthermore, the internal structure of the plug-in slot corresponds to the external structure of the heat transfer block, which assists in plugging the heat transfer block while assisting in the transmission of high-temperature steam, and prevents the temperature loss of high-temperature steam through the heat-insulating inner shell during the transportation process.

[0020] Furthermore, a steering plate is provided between the upper cover and the measuring meter body, the steering plate is provided with a through hole, the steering plate is threadedly connected to the inner wall of the upper cover, and is located below the disc-shaped transparent plate. By rotating the steering plate and connecting it to the inside of the upper cover, the display panel of the measuring meter body is protected while maintaining the stability of the internal measuring structure to prevent the surface from being worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0022] Figure 2 It is a three-dimensional upward structural schematic diagram of the utility model.

[0023] Figure 3 It is a schematic diagram of the exploded structure of the utility model.

[0024] Figure 4 It is a schematic diagram of the exploded structure of the utility model when viewed from above.

[0025] Figure 5 It is a partial cutaway structural schematic diagram of the utility model.

[0026] Figure 6 The utility model is Figure 5 Schematic diagram of the enlarged structure of part A.

[0027] In the figure: 1. Installation part; 101. Installation outer shell; 102. Installation inner shell; 103. Insulation inner shell; 104. Plug-in slot; 2. External connection part; 201. External connection plate; 202. Docking head; 3. Measuring part; 301. Upper cover; 302. Steering plate; 303. Measuring meter body; 304. Temperature transfer block. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, products or devices.

[0030] The utility model is further described in detail below with reference to the accompanying drawings:

[0031] The utility model aims to provide a thermal control instrument capable of high temperature transition, so as to solve the technical problem that when the existing thermal control instrument is in use, the sensor required for measurement is usually directly installed in the flow path of the high-temperature airflow, so that it is directly in contact with the high-temperature airflow during the measurement process, resulting in excessively fast temperature rise and explosion, thereby causing damage to the instrument.

[0032] Example 1

[0033] See also Figures 1 to 6 In one embodiment of the utility model, a thermal control instrument capable of high temperature transition is provided, comprising: a mounting portion 1; the mounting portion 1 comprises a mounting outer shell 101, a mounting inner shell 102, a heat-insulating inner shell 103 and a plug-in slot 104; the heat-insulating inner shell 103 is configured as a cylindrical structure, and two groups of cylindrical grooves are provided on the outer wall of the heat-insulating inner shell 103, and the heat-insulating inner shell 103 is plugged into the inside of the mounting inner shell 102, and the two groups of cylindrical grooves of the heat-insulating inner shell 103 are aligned with the threaded through holes on the mounting inner shell 102; the heat-insulating inner shell 103 is used to seal the high-temperature steam flowing through the temperature transfer block 304 to prevent the temperature from flowing out and to facilitate the temperature loss.

[0034] The mounting portion 1 is provided with an external connection portion 2 on the outside; the mounting portion 1 is provided with a measuring portion 3 on the inside; the external connection portion 2 includes an external connection plate 201 and a docking joint 202; the external connection plate 201 is fixed to the outer wall of the mounting shell 101 by screws, the docking joint 202 is threadedly connected to the mounting inner shell 102, and the docking joint 202 is threadedly connected to the heat-insulating inner shell 103; the measuring portion 3 includes an upper cover 301, a measuring meter body 303 and a temperature transfer block 304; the upper cover 301 is threadedly connected to the mounting shell 101, and the measuring meter body 303 and the temperature transfer block 304 are connected to the mounting shell 101. The meter body 303 is plugged into the interior of the mounting shell 101, and the temperature transfer block 304 is plugged into the plug-in slot 104; the temperature transfer block 304 is arranged as a rectangular structure, and a circular through hole is arranged in the middle of the temperature transfer block 304, and the temperature transfer block 304 is plugged into the bottom of the measuring meter body 303, and the temperature transfer block 304 is connected to the temperature sensor inside the measuring meter body 303; the temperature transfer block 304 is used to directly contact with high-temperature steam so as to transfer the temperature of the high-temperature steam and avoid direct contact between the high-temperature steam and the temperature sensor.

[0035] Example 2

[0036] On the basis of Example 1, Figure 5 to Figure 6As shown, the mounting shell 101 is a cylindrical structure, a cylindrical groove is provided on the top of the mounting shell 101, a rectangular frame-shaped protrusion is provided on the outer wall of the mounting shell 101, a thread is provided on the outer wall of the mounting shell 101, and two groups of circular through holes are provided on the outer wall of the mounting shell 101; the mounting shell 101 is used to assist in the installation and fixation of other structures of the instrument so that the whole remains stable; the mounting inner shell 102 is set to a cylindrical structure, a cylindrical groove is provided in the middle position of the mounting inner shell 102, two groups of cylindrical grooves are provided on the outer wall of the mounting inner shell 102, and the two groups of cylindrical through holes of the mounting inner shell 102 The grooves are respectively connected with threaded through holes, and the mounting inner shell 102 is fixed to the inside of the mounting outer shell 101 by screws; the mounting inner shell 102 is used to assist in protecting and fixing the heat-insulating inner shell 103 so that it remains stable as a whole; the plug-in slot 104 is set as a rectangular slot, and the inner wall of the plug-in slot 104 is connected with a threaded through hole, and the plug-in slot 104 is set inside the heat-insulating inner shell 103, and the threaded through hole of the plug-in slot 104 is connected to the cylindrical groove on the outer wall of the heat-insulating inner shell 103; the plug-in slot 104 is used to assist in the installation of the temperature transfer block 304 so that it can be docked with the high-temperature steam delivery path.

[0037] In the embodiments of the present disclosure, Figure 5 to Figure 6 As shown, the external plate 201 is configured as an arc plate-shaped structure, a circular through hole is provided in the middle position of the external plate 201, and there are two groups of external plates 201; the external plate 201 is used to assist in the installation of the docking head 202 so that it remains stable and is easy to use; the docking head 202 is configured as a cylindrical tubular structure, threads are provided on the outer walls of the two groups of ports of the docking head 202, and an annular groove is provided on the outer wall of the docking head 202, and there are two groups of docking heads 202, which are rotatably connected in the two groups of external plates 201 respectively; the docking head 202 is used to assist in connecting the plug slot 104 with the external delivery pipe so as to transport and process the high-temperature steam.

[0038] In the embodiments of the present disclosure, Figure 3 As shown, the upper cover 301 is configured as a circular ring structure, a circular ring-shaped protrusion is provided on the inner wall of the upper cover 301, a disc-shaped transparent plate is provided inside the upper cover 301, and a thread is provided on the inner wall of the upper cover 301; the upper cover 301 is used to seal the top of the mounting shell 101 so as to protect the internal structure; the steering plate 302 is configured as a disc-shaped structure, a rectangular through hole is provided in the middle position of the steering plate 302, and the steering plate 302 is rotatably connected to the inside of the upper cover 301; the steering plate 302 is used to protect the transparent plate inside the upper cover 301 to prevent it from being worn over a large area; the measuring part 3 also includes a measuring meter body 303; the measuring meter body 303 is arranged below the upper cover 301; the measuring meter body 303 is used to measure the temperature of the high-temperature steam.

[0039] The specific usage and function of this embodiment are as follows:

[0040] In the present invention, during installation, the installation inner shell 102 is fixed to the inside of the installation outer shell 101 by screws, and the heat-insulating inner shell 103 is plugged into the inside of the installation inner shell 102, and then the docking joint 202 is plugged into the outer wall of the installation outer shell 101 through the external connection plate 201, and in the process of fixing, the docking joint 202 is respectively threadedly connected to the installation inner shell 102 and the heat-insulating inner shell 103, so as to connect with the external delivery pipe and constrain both at the same time, and then the temperature transfer block 304 is connected to the measuring meter body 303 and then plugged into the plug-in slot 104, and then the upper cover 301 is threadedly connected to the top of the installation outer shell 101;

[0041] When in use, the entire instrument is connected to the high-temperature steam delivery path through the docking joint 202, so that the entire instrument remains stable while the high-temperature steam is delivered to the interior of the installation shell 101 and passes through the temperature transfer block 304. The temperature of the temperature transfer block 304 increases during the passage of the high-temperature steam, and the stability is then transferred to the temperature sensor in the measuring meter body 303, so that the temperature of the high-temperature steam can be measured and processed by the temperature sensor for its use.

[0042] In summary, the utility model provides a thermal control instrument capable of high-temperature transition, by providing an insulating inner shell and a plug-in slot, by plugging the insulating inner shell into the inside of the installed inner shell, and connecting the two through a docking joint so as to maintain stability between the two, and by opening a plug-in slot inside the insulating inner shell, it can assist in plugging in the temperature transfer block while assisting in the transmission and processing of the high-temperature steam, and prevent the temperature loss of the high-temperature steam through the insulating inner shell during the transportation process; by providing a steering plate and a temperature transfer block, by rotatably connecting the steering plate to the inside of the upper cover, the display panel of the measuring meter body can be protected while maintaining the stability of the internal measurement structure to prevent the surface from being worn, and by plugging the temperature transfer block into the plug-in slot and connecting it to the temperature sensor inside the measuring meter body, so that the temperature can be transferred while contacting the high-temperature steam flowing through through the temperature transfer block, and the high-temperature steam can be prevented from directly contacting the temperature sensor and causing its instantaneous temperature to rise, so as to protect the instrument.

[0043] The sensor required for measurement in the utility model is usually directly installed in the flow path of the high-temperature airflow, so that it is directly in contact with the high-temperature airflow during the measurement process, resulting in the temperature rising too fast and bursting, and then causing the problem of damage to the instrument, including: a mounting part; an external connection part is provided on the outside of the mounting part; and a measuring part is provided on the inside of the mounting part. By rotating the steering plate to connect to the inside of the upper cover, the display panel of the measuring meter body is protected while maintaining the stability of the internal measurement structure to avoid surface wear, and by plugging the temperature transfer block into the plug-in slot, the temperature is transferred while the temperature transfer block contacts the high-temperature steam flowing through, avoiding the high-temperature steam from directly contacting the temperature sensor and causing its instantaneous temperature to rise, so as to protect the instrument.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A thermal control instrument capable of high temperature transition, characterized in that: The device comprises a mounting portion (1), two sets of external connection portions (2) and a measuring portion (3), wherein the measuring portion (3) is mounted in the mounting portion (1), the two sets of external connection portions (2) are arranged opposite to each other on both sides of the mounting portion (1), and one end of the two sets of external connection portions (2) are connected to the measuring portion (3) through the mounting portion (1), and the other ends of the two sets of external connection portions (2) are connected to an external delivery pipe for delivering high-temperature steam. The measuring portion (3) comprises an upper cover (301), a measuring meter body (303) and a temperature transfer block (304). The upper cover The cover (301) is arranged on the top of the mounting part (1); a temperature sensor is arranged in the measuring meter body (303); the measuring meter body (303) is arranged at the bottom of the upper cover (301) and is located in the mounting part (1); the temperature transfer block (304) is located in the mounting part (1), and the temperature transfer block (304) is connected to the temperature sensor in the measuring meter body (303); a through hole is arranged on the temperature transfer block (304), and the two sets of external connection parts (2) are respectively connected to the through holes of the temperature transfer block (304) through the mounting part (1).

2. A thermal control instrument capable of high temperature transition according to claim 1, characterized in that: The mounting portion (1) comprises a mounting outer shell (101), a mounting inner shell (102) and a heat-insulating inner shell (103); the mounting inner shell (102) is plugged into the mounting outer shell (101); the heat-insulating inner shell (103) is plugged into the mounting inner shell (102); the upper cover (301) is disposed on the mounting outer shell (101); the measuring meter body (303) and the heat-transfer block (304) are located in the heat-insulating inner shell (103); first connecting through holes are coaxially provided on both sides of the mounting outer shell (101), the mounting inner shell (102) and the heat-insulating inner shell (103); the connecting through holes are coaxially corresponding to the through holes of the heat-transfer block (304); and the two sets of external connection portions (2) are sequentially connected to the through holes of the heat-transfer block (304) via the first connecting through holes.

3. A thermal control instrument capable of high temperature transition according to claim 2, characterized in that: The heat-insulating inner shell (103) is provided with a plug-in slot (104), the measuring meter body (303) is located in the heat-insulating inner shell (103) and abuts against the top of the plug-in slot (104), the temperature transfer block (304) is located in the plug-in slot (104), the plug-in slot (104) corresponds to the position of the first connecting through hole, and second connecting through holes are respectively opened on both sides of the plug-in slot (104), the second connecting through hole is coaxially arranged with the first connecting through hole and the through hole of the temperature transfer block (304), and is used to penetrate the two sets of external connection parts (2) and connect to the through hole of the temperature transfer block (304).

4. A thermal control instrument capable of high temperature transition according to claim 2, characterized in that: The first connecting through hole, the second connecting through hole and the through hole of the temperature transfer block (304) are provided with internal threads, and the two sets of external connection parts (2) are both threadedly connected to the first connecting through hole, the second connecting through hole and the through hole of the temperature transfer block (304).

5. A thermal control instrument capable of high temperature transition according to claim 3, characterized in that: The internal structure of the plug-in slot (104) corresponds to the external structure of the temperature transfer block (304).

6. A thermal control instrument capable of high temperature transition according to claim 2, characterized in that: The inner diameter of the mounting outer shell (101) corresponds to the outer diameter of the mounting inner shell (102), and the inner diameter of the mounting inner shell (102) corresponds to the outer diameter of the heat-insulating inner shell (103).

7. A thermal control instrument capable of high temperature transition according to claim 2, characterized in that: The external connection part (2) comprises an external connection plate (201) and a docking joint (202); the external connection plate (201) is fixedly arranged on the mounting housing (101); an assembly through hole is provided on the external connection plate (201) at a position corresponding to the first connection through hole; one end of the docking joint (202) is connected to the through hole of the temperature transfer block (304) via the assembly through hole and the first connection through hole, and the other end is connected to an external delivery pipe.

8. A thermal control instrument capable of high temperature transition according to claim 7, characterized in that: The plate-shaped surface of the external connection plate (201) corresponds to the outer wall of the installation shell (101), and the external connection plate (201) is fixed to the outer wall of the installation shell (101) by means of screws.

9. A thermal control instrument capable of high temperature transition according to claim 2, characterized in that: An annular protrusion is provided on the inner wall of the upper cover (301), and a disc-shaped transparent plate is provided on the annular protrusion. The measuring meter body (303) is threadedly assembled on the upper cover (301).

10. A thermal control instrument capable of high temperature transition according to claim 9, characterized in that: A steering plate (302) is provided between the upper cover (301) and the measuring meter body (303), a through hole is provided on the steering plate (302), the steering plate (302) is threadedly connected to the inner wall of the upper cover (301), and is located below the disc-shaped transparent plate.