A thermocouple testing system

Abstract

The present invention belongs to the field of temperature monitoring technology and specifically discloses a thermocouple testing system, comprising a first thermocouple, a testing area, a temperature simulation area, and a data acquisition area. The testing area is used to simulate the temperature inside a heating furnace, and the temperature simulation area is used to simulate the temperature of the insulation lining of the heating furnace. The detection end of the first thermocouple passes through the temperature simulation area and enters the testing area, and the cold end of the first thermocouple is located in the temperature simulation area. The data acquisition area includes an acquisition unit and a detection unit. The acquisition unit transmits the data of the first thermocouple to the detection unit, and the detection unit is used to detect the temperature information transmitted by the first thermocouple. The temperature simulation area includes a temperature simulation cavity, and a heating wire is provided in the temperature simulation cavity. The above system solves the problem that there is currently no judgment on whether the temperature of the insulation lining affects the thermocouple test data, which is likely to lead to inaccurate temperature detection of the heating furnace, thereby leading to inaccurate actual forging temperature of the material or workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature monitoring, and in particular relates to a thermocouple testing system. Background Art

[0002] In the metallurgical industry, materials or workpieces must be heated to forging temperature before processing. Heating furnaces are key components of heating and refining equipment. The inner walls of heating furnaces are typically lined with an insulating lining, the primary function of which is to reduce heat loss during operation. To determine the heating temperature within the furnace, thermocouples are typically used to monitor the internal temperature. The thermocouples first pass through the insulating lining before entering the furnace for temperature measurement, with the cold end of the thermocouple located within the lining. As the temperature inside the heating furnace increases, the temperature of its insulation lining will also increase (for example, when the temperature inside the heating furnace rises to about 1000°C, the temperature of the insulation lining may be between 200-300°C). Therefore, it is necessary to determine whether the temperature of the insulation lining affects the thermocouple test data in order to accurately apply the thermocouple to the subsequent temperature detection of the heating furnace. However, at present, there is no determination on whether the temperature of the insulation lining affects the thermocouple test data, which is likely to lead to inaccurate temperature detection of the heating furnace, thereby causing inaccurate actual forging temperature of the material or workpiece. Summary of the Invention

[0003] The purpose of the present invention is to provide a thermocouple testing system to solve the problem that there is currently no judgment on whether the temperature of the insulation lining affects the thermocouple test data, which is likely to lead to inaccurate temperature detection of the heating furnace and thus inaccurate actual forging temperature of the material or workpiece.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a thermocouple testing system, comprising a first thermocouple, a test area, a temperature simulation area and a data acquisition area, the test area being used to simulate the temperature inside a heating furnace, and the temperature simulation area being used to simulate the temperature of the insulation lining of the heating furnace; the detection end of the first thermocouple passes through the temperature simulation area and enters the test area, and the cold end of the first thermocouple is located in the temperature simulation area; the data acquisition area comprises an acquisition part and a detection part, the acquisition part is connected to the first thermocouple and transmits the data of the first thermocouple to the detection part, and the detection part is used to detect the temperature information transmitted by the first thermocouple; the temperature simulation area comprises a temperature simulation cavity, a heating wire is provided in the temperature simulation cavity, and the heating wire is used to heat the inside of the temperature simulation cavity.

[0005] Furthermore, the collection part includes a vacuum temperature measurement adapter device, a first flange is provided on one side of the vacuum temperature measurement adapter device, and a second flange is provided on the side of the temperature simulation cavity away from the test area, and the first flange and the second flange are connected; the first thermocouple can pass through the center holes of the first flange and the second flange.

[0006] Furthermore, a mounting plate is provided on the other side of the vacuum temperature measurement adapter device, and an adapter is provided on the mounting plate, and the adapter is used to connect the first thermocouple to the detection part.

[0007] Furthermore, the detection part is connected to a thermocouple wire, the thermocouple wire is provided with a connector, and the connector and the adapter can be cooperatively connected.

[0008] Furthermore, the connector and adapter are plugs and sockets.

[0009] Furthermore, the temperature simulation area also includes a temperature monitoring structure, which includes a second thermocouple and a temperature control instrument. The second thermocouple is used to monitor the temperature in the temperature simulation cavity, and the temperature control instrument is connected to the second thermocouple.

[0010] Furthermore, the first thermocouples are provided in a plurality of groups, and the number of the adapters and connectors is greater than or equal to the number of the first thermocouples.

[0011] Furthermore, a heating chamber is provided inside the temperature simulation cavity, the heating wire is provided in the heating chamber, and a heat preservation structure is provided in the heating chamber.

[0012] Furthermore, a connecting pipe is connected to the center hole of the first flange, and a through hole is provided inside the connecting pipe for passing the first thermocouple; the connecting pipe can pass through the center hole of the second flange, and a limiter is provided on the connecting pipe, and the limiter can be abutted against the first flange.

[0013] Furthermore, a plurality of groups of adjustment holes are evenly arranged around the circumference of the second flange; the adjustment holes are strip-shaped holes, and the extension lines of the adjustment holes in the length direction pass through the center of the second flange; a plurality of groups of circular holes are also provided on the second flange, and the plurality of groups of circular holes are evenly distributed around the circumference of the second flange; the adjustment holes and the circular holes are staggered.

[0014] The working principle of this technical solution is: the temperature of the test area is raised to the required temperature, the heating wire heats the inside of the temperature simulation cavity, the second thermocouple and the temperature control instrument monitor the temperature inside the temperature simulation cavity in real time, so that the temperature inside the temperature simulation cavity also reaches the required temperature. The test end of the first thermocouple detects the temperature of the test area, and transmits the detection data to the detection unit through the adapter and the connector. The detection unit detects and displays the data transmitted by the first thermocouple. By comparing the temperature detected by the detection unit with the actual temperature to which the test area is raised, it is determined whether the temperature of the temperature simulation area has an impact on the measurement of the first thermocouple, that is, whether the increase in the ambient temperature of the cold end of the first thermocouple has an impact on the measurement of the first thermocouple.

[0015] The beneficial effects of this technical solution are: ① This technical solution simulates the heating furnace to determine whether the temperature of the insulation lining of the heating furnace affects the measurement of the thermocouple, thereby providing a certain basis for the application of thermocouples in the temperature detection of the heating furnace in the later stage. ② By setting up multiple groups of first thermocouples, multiple groups of first thermocouples can be detected at the same time, and it can be compared to determine whether there are thermocouples with abnormal detection in these groups of thermocouples. ③ The second thermocouple and the temperature control instrument can monitor the temperature inside the temperature simulation cavity in real time. ④ By setting up an insulation structure, the problem of internal temperature loss too quickly can be prevented. ⑤ The adjustment hole can adapt to flanges of different models and sizes, and there is no need to replace the adjustment flange to connect the temperature simulation cavity and the flange. ⑥ The two sides of the adjustment hole are set as arcs, which can better adapt to the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a thermocouple testing system of the present invention;

[0017] Figure 2 Schematic diagram of the structure of the second flange. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: test furnace 1, first thermocouple 2, temperature simulation cavity 3, heating wire 4, insulation structure 5, second thermocouple 6, temperature control instrument 7, second flange 8, first flange 9, connecting pipe 10, limiter 11, vacuum temperature measurement adapter 12, mounting plate 13, adapter 14, connector 15, thermocouple wire 16, detection part 17, adjustment hole 18, and circular hole 19.

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The embodiment is basically as shown in the attached Figure 1-2 Figure 1 shows a thermocouple testing system comprising a first thermocouple 2, a testing area, a temperature simulation area, and a data acquisition area. The testing area is used to simulate the temperature inside a heating furnace, and the testing area employs a test furnace 1. The temperature simulation area simulates the temperature of the heating furnace's insulation lining. The detection end of the first thermocouple 2 passes through the temperature simulation area and then enters the testing area, while the cold end of the first thermocouple 2 is located within the temperature simulation area.

[0022] The temperature simulation area includes a temperature simulation cavity 3 and a temperature monitoring structure. A heating cavity is provided inside the temperature simulation cavity 3, and a heating wire 4 is provided inside the heating cavity, specifically an armored heating wire. An insulation structure 5 is provided inside the heating cavity, specifically, the heating cavity is filled with insulation cotton. The heating wire 4 is used to heat the interior of the temperature simulation cavity 3. There are two groups of temperature monitoring structures, located on both sides of the temperature simulation cavity 3. Each group of temperature monitoring structures includes a second thermocouple 6 and a temperature control instrument 7. The second thermocouple 6 is used to monitor the temperature inside the temperature simulation cavity 3. The second thermocouple 6 is inserted into the heating cavity, and the temperature control instrument 7 is connected to the second thermocouple 6.

[0023] The data acquisition area includes an acquisition unit and a detection unit 17. The detection unit 17 uses a secondary instrument. The acquisition unit is connected to the first thermocouple 2 and transmits the data from the first thermocouple 2 to the detection unit 17. The detection unit 17 is used to detect the temperature information transmitted by the first thermocouple 2. The acquisition unit includes a vacuum temperature measurement adapter 12. The right side of the vacuum temperature measurement adapter 12 is provided with a first flange 9. The left side of the temperature simulation chamber 3 is welded with a second flange 8. The first flange 9 and the second flange 8 are connected by bolts. The left side of the vacuum temperature measurement adapter 12 is provided with a mounting plate 13. The mounting plate 13 is provided with an adapter 14. The adapter 14 is used to connect the first thermocouple 2 to the detection unit 17. The detection unit 17 is connected to a thermocouple wire 16, specifically a high-temperature thermocouple wire. The thermocouple wire 16 is connected to a connector 15. The connector 15 and the adapter 14 can be connected in a mating manner. Specifically, the connector 15 and the adapter 14 use a plug and socket, and a K-grade plug and socket can be used. Several groups of first thermocouples 2 are provided, and the number of adapters 14 and connectors 15 is respectively greater than or equal to the number of first thermocouples 2. Multiple groups of first thermocouples 2 are provided, and multiple groups of first thermocouples 2 can be tested simultaneously, and it can be compared to determine whether there are any first thermocouples 2 with abnormal detection in these groups of first thermocouples 2. A connecting pipe 10 is connected to the center hole of the first flange 9, and the interior of the connecting pipe 10 is provided with a through hole for passing the first thermocouple 2; the connecting pipe 10 can pass through the center hole of the second flange 8, and a limiter 11 is provided on the connecting pipe 10, which can be offset against the first flange 9.

[0024] like Figure 2 As described above, a plurality of groups of adjustment holes 18 are evenly arranged around the circumference of the second flange 8; the adjustment holes 18 are strip-shaped holes, and the extension lines of the adjustment holes 18 in the length direction pass through the center of the second flange 8; a plurality of groups of circular holes 19 are also provided on the second flange 8, and the plurality of circular holes 19 are evenly distributed around the circumference of the second flange 8; the adjustment holes 18 and the circular holes 19 are staggered.

[0025] The specific implementation process is as follows:

[0026] The temperature of the test area is raised to the desired temperature (e.g., 1000°C), the heating wire 4 heats the inside of the temperature simulation cavity 3, and the second thermocouple 6 and the temperature control instrument 7 monitor the temperature inside the temperature simulation cavity 3 in real time, so that the temperature inside the temperature simulation cavity 3 also reaches the desired temperature (e.g., 250°C). The test end of the first thermocouple 2 detects the temperature of the test area and transmits the detection data to the detection unit 17 through the adapter 14 and the connector 15. The detection unit 17 detects and displays the data transmitted by the first thermocouple 2. By comparing the temperature detected by the detection unit 17 with the actual temperature to which the test area has risen, it is determined whether the temperature of the temperature simulation area has an impact on the measurement of the first thermocouple 2, that is, whether the increase in the ambient temperature of the cold end of the first thermocouple has an impact on the measurement of the first thermocouple.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A thermocouple testing system, characterized in that: The invention comprises a first thermocouple (2), a test area, a temperature simulation area and a data acquisition area, wherein the test area is used to simulate the temperature inside the heating furnace, and the temperature simulation area is used to simulate the temperature of the heat-insulating lining of the heating furnace; the detection end of the first thermocouple (2) passes through the temperature simulation area and enters the test area, and the cold end of the first thermocouple (2) is located in the temperature simulation area; the data acquisition area comprises an acquisition part and a detection part (17), wherein the acquisition part is connected to the first thermocouple (2) and transmits the data of the first thermocouple (2) to the detection part (17), and the detection part (17) is connected to the first thermocouple (2) and transmits the data of the first thermocouple (2) to the detection part (17). The portion (17) is used to detect the temperature information transmitted by the first thermocouple (2); the temperature simulation area includes a temperature simulation cavity (3), a heating wire (4) is provided in the temperature simulation cavity (3), and the heating wire (4) is used to heat the interior of the temperature simulation cavity (3); the temperature simulation area also includes a temperature monitoring structure, and the temperature monitoring structure includes a second thermocouple (6) and a temperature control instrument (7), the second thermocouple (6) is used to monitor the temperature in the temperature simulation cavity (3), and the temperature control instrument (7) is connected to the second thermocouple (6).

2. A thermocouple testing system according to claim 1, characterized in that: The collecting part comprises a vacuum temperature measurement adapter (12), a first flange (9) is provided on one side of the vacuum temperature measurement adapter (12), a second flange (8) is provided on a side of the temperature simulation cavity (3) away from the test area, the first flange (9) and the second flange (8) are connected; and the first thermocouple (2) can pass through the center holes of the first flange (9) and the second flange (8).

3. A thermocouple testing system according to claim 2, characterized in that: A mounting plate (13) is provided on the other side of the vacuum temperature measurement adapter (12), and an adapter (14) is provided on the mounting plate (13). The adapter (14) is used to connect the first thermocouple (2) to the detection part (17).

4. A thermocouple testing system according to claim 3, characterized in that: The detection part (17) is connected to a thermocouple wire (16), and a connecting piece (15) is provided on the thermocouple wire (16). The connecting piece (15) and the adapter (14) can be matched and connected.

5. A thermocouple testing system according to claim 4, characterized in that: The connecting piece (15) and the adapter (14) are in the form of a plug and a socket.

6. A thermocouple testing system according to claim 4, characterized in that: The first thermocouples (2) are provided in a plurality of groups, and the number of the adapters (14) and the connectors (15) is greater than or equal to the number of the first thermocouples (2).

7. A thermocouple testing system according to claim 1, characterized in that: A heating cavity is provided inside the temperature simulation cavity (3), the heating wire (4) is provided in the heating cavity, and a heat preservation structure (5) is provided in the heating cavity.

8. A thermocouple testing system according to claim 1, characterized in that: A connecting pipe (10) is connected to the center hole of the first flange (9), and a through hole is provided inside the connecting pipe (10) for passing the first thermocouple (2); the connecting pipe (10) can pass through the center hole of the second flange (8), and a limiting member (11) is provided on the connecting pipe (10), and the limiting member (11) can be abutted against the first flange (9).

9. A thermocouple testing system according to claim 2, characterized in that: The second flange (8) is evenly provided with a plurality of groups of adjustment holes (18) in the circumference thereof; the adjustment holes (18) are strip-shaped holes, and the extension lines of the length directions of the adjustment holes (18) pass through the center of the circle of the second flange (8); the second flange (8) is also provided with a plurality of groups of circular holes (19), and the plurality of groups of circular holes (19) are evenly distributed in the circumference of the second flange (8); the adjustment holes (18) and the circular holes (19) are arranged in a staggered manner.

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