Hot end structure of high-temperature sensor

Abstract

The utility model provides a hot end structure of a high-temperature sensor, which relates to the technical field of high-temperature sensors and comprises a B-shaped thermocouple, a thermode is arranged at the bottom end of the B-shaped thermocouple, a hot end head is mounted at the bottom end of the thermode, a connecting frame is arranged in the middle sections of the B-shaped thermocouple and the thermode, clamping grooves are formed in two sides of the connecting frame, and the clamping grooves are connected with the B-shaped thermocouple. A hot end protection assembly is installed in the middle of the clamping groove. The hot end protection assembly comprises an installation sleeve, a clamp and a protection cover, the installation sleeve is installed in the middle of the clamping groove, through the installation sleeve and the protection cover of the hot end protection assembly, the clamp is clamped in the clamping groove for assembly, the unused B-shaped thermocouple can be conveniently protected, the condition that the B-shaped thermocouple is rubbed and collided is avoided, and the service life of the B-shaped thermocouple is prolonged. The installation sleeve and the protection cover are used in cooperation, dust on the outer surface of the B-shaped thermocouple can be shielded, and the situation that dust is accumulated on the hot electrode and the hot end of the B-shaped thermocouple, and consequently detection errors are caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature sensors, in particular to a hot-end structure of a high-temperature sensor. Background Art

[0002] A high-temperature sensor is also called a "thermocouple sensor". A thermocouple sensor is a self-powered sensor used to measure temperature. It consists of two metal wires made of different materials, which are connected together through a hot junction. The output voltage of the thermocouple sensor is proportional to the temperature difference between the hot junction and the cold junction of the wire. This kind of sensor is widely used to measure the surface temperature of furnaces, liquids, gases in pipelines, and solids, and its temperature measurement range is between -270°C and [temperature value not provided]°C.

[0003] In the prior art, when the B-shaped thermocouple is not in use, the B-shaped thermocouple is prone to being damaged on the inner surface due to collision and friction, thus shortening the service life of the B-shaped thermocouple.

[0004] Therefore, the utility model provides a hot-end structure of a high-temperature sensor. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art and provide a hot-end structure of a high-temperature sensor.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A hot-end structure of a high-temperature sensor, including a B-shaped thermocouple. A hot electrode is arranged at the bottom end of the B-shaped thermocouple, and a hot end head is installed at the bottom end of the hot electrode. An adapter is arranged in the middle section between the B-shaped thermocouple and the hot electrode, and clamping grooves are formed on both sides of the adapter. A hot-end protection component is installed in the middle of the clamping grooves;

[0007] The hot-end protection component includes a mounting sleeve, a clamp, and a protective cover. The mounting sleeve is installed in the middle of the clamping groove, and clamps are connected to both sides of the inner wall of the mounting sleeve. The lower end of the mounting sleeve is connected to the protective cover;

[0008] Insertion slots are formed on both sides in the middle of the hot-end protection component; and a cleaning component is arranged in the middle of the insertion slots. An observation component is installed at the bottom end of the insertion slots. A connecting wire is connected to the top end of the B-shaped thermocouple.

[0009] As a preferred implementation manner, the clamps are symmetrically distributed about the axis of the mounting sleeve, and the protective cover is connected to the mounting sleeve.

[0010] The technical effects of adopting the above further scheme are as follows: The B-type thermocouple 1 is made of platinum-rhodium alloy, with 30% rhodium and 70% platinum. The negative electrode BN is platinum-rhodium alloy with 6% rhodium content, so it is commonly known as double platinum-rhodium thermocouple. The long-term maximum operating temperature of this thermocouple is 1600 °C, and the short-term maximum operating temperature is 1800 °C. The B-type thermocouple has the advantages of the highest accuracy, the best stability, a wide temperature measurement range, a long service life, and a high temperature measurement upper limit in the thermocouple series. The top of the B-type thermocouple is connected with a connecting wire for signal connection. The bottom of the B-type thermocouple is provided with a thermal electrode, and the heat detected by the hot end is transmitted to the B-type thermocouple through the thermal electrode for detection and processing. There is a connecting frame in the middle of the B-type thermocouple and the thermal electrode, and the card slots are symmetrically distributed on both sides of the connecting frame. Through the installation sleeve and the protective cover of the hot end protection component, it is assembled by clamping in the card slots, which is convenient for protecting the unused B-type thermocouple and avoiding the situation of the B-type thermocouple being rubbed and collided.

[0011] As a preferred implementation manner, the installation sleeve forms a clamping structure with the connecting frame and the card slots through a clamp, and the inner wall shape structure of the installation sleeve completely coincides with the outer wall shape structure of the B-type thermocouple.

[0012] The technical effects of adopting the above further scheme are as follows: The installation sleeve and the protective cover are used in combination to block the dust on the outer surface of the B-type thermocouple, avoiding the situation that the thermal electrode and the hot end of the B-type thermocouple accumulate dust and cause detection errors.

[0013] As a preferred implementation manner, the cleaning component includes an installation frame, a card strip and a cleaning brush. An installation frame is arranged in the middle of the installation slot, and card strips are connected to both sides of the installation frame, and a cleaning brush is arranged in a circle on the inner wall of the card strip.

[0014] The technical effects of adopting the above further scheme are as follows: Through the installation slots opened on both sides inside the installation sleeve and the protective cover, with the setting of the cleaning component, the dust on the outer surface of the B-type thermocouple can be removed, avoiding affecting the detection effect of the B-type thermocouple on objects in the later stage.

[0015] As a preferred implementation manner, the installation frame and the card strip are fixedly connected, and the cleaning brushes are annularly distributed about the axis of the installation frame.

[0016] The technical effects of adopting the above further scheme are as follows: The card strip of the installation frame is clamped inside the installation slot for installation, and the cleaning brush is used to clean the dust on the outer surface of the B-type thermocouple.

[0017] As a preferred embodiment, the observation component includes a fixing frame, an observation window and a threaded tube. The fixing frame is installed at the bottom end of the installation slot, and the observation window is arranged in the middle of the fixing frame. The top end of the fixing frame is connected with the threaded tube.

[0018] The technical effect of adopting the above further scheme is that: by arranging the observation component at the bottom end of the protective cover, it is convenient to threadedly install the observation window of the fixing frame at the bottom of the protective cover through the threaded tube for assembly.

[0019] As a preferred embodiment, the fixing frame and the observation window are fixedly connected, and the observation window is made of a transparent material structure.

[0020] The technical effect of adopting the above further scheme is that: through the observation window, the placement and cleaning effect of the B-type thermocouple inside the installation sleeve can be seen, avoiding the influence of the B-type thermocouple cleaning dust on the surrounding working environment.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0022] The B-type thermocouple 1 is made of platinum-rhodium alloy, which contains 30% rhodium and 70% platinum. The negative electrode BN is platinum-rhodium alloy with a rhodium content of 6%. Therefore, it is commonly known as double platinum-rhodium thermocouple. The long-term maximum operating temperature of this thermocouple is 1600°C, and the short-term maximum operating temperature is 1800°C. The B-type thermocouple has the advantages of the highest accuracy, the best stability, a wide temperature measurement range, a long service life, and a high temperature measurement upper limit in the thermocouple series. The top end of the B-type thermocouple is connected with a connecting wire for signal connection. The bottom end of the B-type thermocouple is provided with a thermal electrode, and the heat detected by the hot end is transmitted to the B-type thermocouple through the thermal electrode for detection and processing. A connecting frame is arranged in the middle of the B-type thermocouple and the thermal electrode, and the card slots are symmetrically distributed on both sides of the connecting frame. Through the installation sleeve and the protective cover of the hot end protection component, it is assembled by clamping in the card slots, which is convenient for protecting the unused B-type thermocouple to avoid the situation of the B-type thermocouple being rubbed and collided. The installation sleeve and the protective cover are used in combination to block the dust on the outer surface of the B-type thermocouple, avoiding the situation that the thermal electrode and the hot end of the B-type thermocouple accumulate dust and cause detection errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the hot end structure of the sensor of the present utility model;

[0024] Figure 2 It is an internal structure diagram of the hot end protection component of the present utility model;

[0025] Figure 3 For the present utility model Figure 2 The enlarged structure diagram at A;

[0026] Figure 4 This is a partially enlarged structural diagram of the B-shaped thermocouple of the present utility model.

[0027] Wherein: 1. B-shaped thermocouple; 2. Thermal electrode; 3. Thermal end; 4. Connecting frame; 5. Card slot; 6. Thermal end protection assembly; 601. Installation sleeve; 602. Clip; 603. Protective cover; 7. Installation slot; 8. Cleaning assembly; 801. Installation frame; 802. Card strip; 803. Cleaning brush; 9. Observation assembly; 901. Fixed frame; 902. Observation window; 903. Threaded tube; 10. Connecting wire. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Embodiment

[0030] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the present utility model provides a technical solution: a hot end structure of a high-temperature sensor, including a B-shaped thermocouple 1, a thermal electrode 2 is provided at the bottom end of the B-shaped thermocouple 1, and a thermal end 3 is installed at the bottom end of the thermal electrode 2. A connecting frame 4 is provided in the middle section between the B-shaped thermocouple 1 and the thermal electrode 2, and card slots 5 are opened on both sides of the connecting frame 4. A thermal end protection assembly 6 is installed in the middle of the card slots 5;

[0031] The thermal end protection assembly 6 includes an installation sleeve 601, a clip 602 and a protective cover 603. The installation sleeve 601 is installed in the middle of the card slot 5, and clips 602 are connected to both sides of the inner wall of the installation sleeve 601. The lower end of the installation sleeve 601 is connected to the protective cover 603;

[0032] On both sides of the middle of the hot-end protection component 6, there are installation slots 7 opened; and in the middle of the installation slot 7, there is a cleaning component 8 arranged, and at the bottom end of the installation slot 7, an observation component 9 is installed. The top end of the B-type thermocouple 1 is connected with a connecting wire 10. Specifically speaking, first of all, the B-type thermocouple 1 is made of platinum-rhodium alloy, in which the rhodium content is 30%, and the platinum content is 70%. The negative electrode BN is platinum-rhodium alloy, and the rhodium content is 6%. Therefore, it is commonly known as double platinum-rhodium thermocouple. The long-term maximum operating temperature of this thermocouple is 1600 °C, and the short-term maximum operating temperature is 1800 °C. The B-type thermocouple has the advantages of the highest accuracy, the best stability, a wide temperature measurement range, a long service life, and a high temperature measurement upper limit in the thermocouple series. The top end of the B-type thermocouple 1 is connected with a connecting wire 10, and signal connection is carried out through the connecting wire 10. At the bottom end of the B-type thermocouple 1, there is a thermal electrode 2, and the heat detected by the hot end 3 is transmitted to the B-type thermocouple 1 through the thermal electrode 2 for detection and processing. An adapter 4 is arranged in the middle of the B-type thermocouple 1 and the thermal electrode 2. The clamping grooves 5 are symmetrically distributed on both sides of the adapter 4. Through the mounting sleeve 601 and the protective cover 603 of the hot-end protection component 6, and using the clip 602 to be clamped in the clamping groove 5 for assembly, it is convenient to protect the unused B-type thermocouple 1 to avoid the situation that the B-type thermocouple 1 is subjected to friction and collision. The mounting sleeve 601 and the protective cover 603 are used in combination to block the dust on the outer surface of the B-type thermocouple 1 to avoid the situation that the thermal electrode 2 and the hot end 3 of the B-type thermocouple 1 accumulate dust and cause detection errors. Through the installation slots 7 opened on both sides of the inside of the mounting sleeve 601 and the protective cover 603, through the setting of the cleaning component 8, the dust on the outer surface of the B-type thermocouple 1 can be removed to avoid affecting the detection effect of the B-type thermocouple 1 on objects in the later stage. The clamping strip 802 of the mounting frame 801 is clamped inside the installation slot 7 for installation, and the cleaning brush 803 is used to clean the dust on the outer surface of the B-type thermocouple 1. Through the bottom end of the protective cover 603, there is an observation component 9, which is convenient to threadedly install the observation window 902 of the fixing frame 901 at the bottom of the protective cover 603 through the threaded tube 903. Through the observation window 902, the placement and cleaning effect of the B-type thermocouple 1 inside the mounting sleeve 601 can be seen, and to avoid the situation that the cleaning of the dust of the B-type thermocouple 1 affects the surrounding working environment. Through this technical solution, the problem that when the B-type thermocouple 1 is not in use, the B-type thermocouple 1 is subjected to collision and friction, which will cause damage to the inner surface of the B-type thermocouple 1, thus shortening the service life of the B-type thermocouple 1 is solved. It is realized that the B-type thermocouple 1 is platinum-rhodium alloy, in which the rhodium content is 30%, the platinum content is 70%, the negative electrode BN is platinum-rhodium alloy, and the rhodium content is 6%. Therefore, it is commonly known as double platinum-rhodium thermocouple. The long-term maximum operating temperature of this thermocouple is 1600 °C, and the short-term maximum operating temperature is 1800 °C,Type B thermocouples have the advantages of the highest accuracy, the best stability, a wide temperature measurement range, a long service life, and a high upper temperature limit in the thermocouple series. The top of the Type B thermocouple 1 is connected to a connecting wire 10 for signal connection. The bottom of the Type B thermocouple 1 is provided with a thermal electrode 2. The heat head 3 transports the detected heat to the Type B thermocouple 1 through the thermal electrode 2 for detection and processing. An adapter 4 is provided in the middle of the Type B thermocouple 1 and the thermal electrode 2. The card slots 5 are symmetrically distributed on both sides of the adapter 4. Through the mounting sleeve 601 and the protective cover 603 of the hot end protection component 6, and using the clip 602 to snap into the card slot 5 for assembly, it is convenient to protect the unused Type B thermocouple 1, avoiding the situation that the Type B thermocouple 1 is subject to friction and collision. The mounting sleeve 601 and the protective cover 603 are used in combination to block the dust on the outer surface of the Type B thermocouple 1, avoiding the situation that dust accumulates on the thermal electrode 2 and the heat head 3 of the Type B thermocouple 1, resulting in detection errors.,

[0033] Furthermore, as Figure 2 and Figure 3 shown: It also includes an observation component 9 including a fixing frame 901, an observation window 902, and a threaded tube 903. The fixing frame 901 is installed at the bottom of the installation slot 7, and an observation window 902 is provided in the middle of the fixing frame 901. The top of the fixing frame 901 is connected to a threaded tube 903. The advantage of this technical solution is that an observation component 9 is provided at the bottom of the protective cover 603, which facilitates the threaded installation of the observation window 902 of the fixing frame 901 at the bottom of the protective cover 603 through the threaded tube 903. Through the observation window 902, the placement and cleaning effect of the Type B thermocouple 1 inside the mounting sleeve 601 can be seen, avoiding the situation that the cleaning of the dust on the Type B thermocouple 1 affects the surrounding working environment.,

[0034] In the above solutions, there is also the problem that it is not convenient to protect the outer wall of the Type B thermocouple 1. As Figure 2 and Figure 3 shown: In this solution, the cleaning component 8 includes a mounting frame 801, a card strip 802, and a cleaning brush 803. The mounting frame 801 is provided in the middle of the installation slot 7, and the card strip 802 is connected to both sides of the mounting frame 801. A cleaning brush 803 is provided in a circle on the inner wall of the card strip 802. Through the installation slots 7 opened on both sides inside the mounting sleeve 601 and the protective cover 603, through the setting of the cleaning component 8, the dust on the outer surface of the Type B thermocouple 1 can be removed, avoiding affecting the detection effect of the Type B thermocouple 1 on objects in the later stage. The card strip 802 of the mounting frame 801 is snapped into the installation slot 7 for installation, and the cleaning brush 803 is used to clean the dust on the outer surface of the Type B thermocouple 1.,

[0035] Working principle:

[0036] As Figures 1-4 shown:

[0037] First, the B-type thermocouple 1 is made of platinum-rhodium alloy, which contains 30% rhodium and 70% platinum. The negative electrode BN is also made of platinum-rhodium alloy with 6% rhodium content, so it is commonly known as a double platinum-rhodium thermocouple. The maximum long-term operating temperature of this thermocouple is 1600 °C, and the maximum short-term operating temperature is 1800 °C. The B-type thermocouple has the advantages of the highest accuracy, the best stability, a wide temperature measurement range, a long service life, and a high temperature measurement upper limit in the thermocouple series. The top of the B-type thermocouple 1 is connected to a connecting wire 10 for signal connection. The bottom of the B-type thermocouple 1 is provided with a thermal electrode 2. The heat head 3 transmits the detected heat to the B-type thermocouple 1 through the thermal electrode 2 for detection and processing. An adapter bracket 4 is provided in the middle between the B-type thermocouple 1 and the thermal electrode 2. The card slots 5 are symmetrically distributed on both sides of the adapter bracket 4. Through the mounting sleeve 601 and the protective cover 603 of the hot end protection component 6, and using the clip 602 to engage in the card slot 5 for assembly, it is convenient to protect the unused B-type thermocouple 1 to avoid the situation of the B-type thermocouple 1 being rubbed and collided. The mounting sleeve 601 and the protective cover 603 are used in combination to block the dust on the outer surface of the B-type thermocouple 1, avoiding the situation that the thermal electrode 2 and the heat head 3 of the B-type thermocouple 1 accumulate dust and cause detection errors. Through the cleaning component 8 provided by opening the installation slots 7 on both sides inside the mounting sleeve 601 and the protective cover 603, the dust on the outer surface of the B-type thermocouple 1 can be removed to avoid affecting the detection effect of the B-type thermocouple 1 on objects in the later stage. The card strip 802 of the mounting frame 801 is engaged inside the installation slot 7 for installation, and the cleaning brush 803 is used to clean the dust on the outer surface of the B-type thermocouple 1. Through the bottom of the protective cover 603, an observation component 9 is provided, which is convenient to threadedly install the observation window 902 of the fixing frame 901 at the bottom of the protective cover 603 through the threaded tube 903. Through the observation window 902, the placement and cleaning effect of the B-type thermocouple 1 inside the mounting sleeve 601 can be seen, avoiding the situation that the B-type thermocouple 1 affects the surrounding working environment when cleaning the dust.

[0038] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A hot end structure of a high-temperature sensor, comprising a B-shaped thermocouple (1), characterized in that: The bottom end of the Type B thermocouple (1) is provided with a thermoelectrode (2), and a hot end (3) is installed at the bottom end of the thermoelectrode (2). An adapter (4) is arranged in the middle section between the Type B thermocouple (1) and the thermoelectrode (2), and clamping grooves (5) are formed on both sides of the adapter (4). A hot end protection component (6) is installed in the middle of the clamping groove (5); The hot end protection component (6) includes a mounting sleeve (601), a clip (602) and a protective cover (603). The mounting sleeve (601) is installed in the middle of the clamping groove (5), and clips (602) are connected to both sides of the inner wall of the mounting sleeve (601). The lower end of the mounting sleeve (601) is connected to the protective cover (603); Mounting slots (7) are formed on both sides in the middle of the hot end protection component (6); and a cleaning component (8) is arranged in the middle of the mounting slot (7). An observation component (9) is installed at the bottom end of the mounting slot (7). A connecting wire (10) is connected to the top end of the Type B thermocouple (1).

2. The hot end structure of a high-temperature sensor according to claim 1, characterized in that: The clips (602) are symmetrically distributed about the axis of the mounting sleeve (601), and the protective cover (603) is connected to the mounting sleeve (601).

3. The hot end structure of a high-temperature sensor according to claim 1, characterized in that: The mounting sleeve (601) and the adapter (4) and the clamping groove (5) form a clamping structure through the clips (602). The shape and structure of the inner wall of the mounting sleeve (601) are completely consistent with the shape and structure of the outer wall of the Type B thermocouple (1).

4. A hot end structure of a high-temperature sensor according to claim 1, characterized in that: The cleaning component (8) includes a mounting frame (801), a clamping strip (802) and a cleaning brush (803). The mounting frame (801) is arranged in the middle of the mounting slot (7), and clamping strips (802) are connected to both sides of the mounting frame (801). A cleaning brush (803) is arranged in a circle on the inner wall of the clamping strip (802).

5. A hot end structure of a high-temperature sensor according to claim 4, characterized in that: The mounting frame (801) and the clamping strip (802) are fixedly connected, and the cleaning brushes (803) are annularly distributed about the axis of the mounting frame (801).

6. The hot end structure of a high-temperature sensor according to claim 1, characterized in that: The observation component (9) includes a fixing frame (901), an observation window (902) and a threaded tube (903). The fixing frame (901) is installed at the bottom end of the mounting slot (7), and the observation window (902) is arranged in the middle of the fixing frame (901). The top end of the fixing frame (901) is connected to the threaded tube (903).

7. A hot end structure of a high-temperature sensor according to claim 6, characterized in that: The fixing frame (901) and the observation window (902) are fixedly connected, and the observation window (902) is made of a transparent material structure.

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