CN219391172U - Integrated device for controlling thermocouple and testing thermocouple - Google Patents
Integrated device for controlling thermocouple and testing thermocouple Download PDFInfo
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- CN219391172U CN219391172U CN202223389273.9U CN202223389273U CN219391172U CN 219391172 U CN219391172 U CN 219391172U CN 202223389273 U CN202223389273 U CN 202223389273U CN 219391172 U CN219391172 U CN 219391172U
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- thermocouple
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- guide tube
- flange plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses an integrated device of a control thermocouple and a test thermocouple, which comprises a ceramic flange plate, wherein a first mounting hole for mounting the test thermocouple and a plurality of second mounting holes for mounting the control thermocouple are arranged on the ceramic flange plate, the second mounting holes are distributed in an annular array around the first mounting hole, and the first mounting hole is arranged at the center of the flange plate; the bottom of ring flange is connected with the corundum guide tube, is equipped with sealing gasket between corundum guide tube and the ring flange, and corundum guide tube and the coaxial setting of first mounting hole, along the axial on the pipe wall of corundum guide tube set up with the through-hole of second mounting hole one-to-one, the one end that the ring flange was kept away from to the corundum guide tube is equipped with the chamfer for stop test thermocouple wire and control thermocouple wire and contact at the measuring terminal. The utility model can accurately control the distance between the test thermocouple and the control thermocouple, ensures that the distance between the test thermocouple and the control thermocouple is minimized, can avoid the contact between the test thermocouple and the control thermocouple at the test end, and ensures the consistency, the accuracy and the test precision of the periodic test.
Description
Technical Field
The utility model belongs to the technical field of test and verification of auxiliary aviation hot processing equipment, and particularly relates to an integrated device of a control thermocouple and a test thermocouple.
Background
Most aviation products are parts such as titanium alloy, high-strength alloy steel castings and the like with high processing difficulty, and metal materials of the aviation products often need to be subjected to heat treatment to obtain expected metal structures and performances. Among them, a heating furnace is a device for heat-treating a metal material to a certain temperature, and in order to monitor the temperature in the heating furnace, a control thermocouple is generally disposed in the furnace to monitor the temperature in the furnace, so that the accuracy of the control thermocouple is very critical, particularly for temperature-sensitive aviation products.
For the above reasons, it is necessary to perform a system accuracy test on the heating furnace for the first time and periodically, wherein the system accuracy test is to compare the temperature recorded by the calibrated control thermocouple with the corrected temperature of the test thermocouple on the test instrument at the operating temperature to determine whether the measured temperature deviation is within the allowable error range. Currently, the precision test (SAT) of an aeronautical thermal processing equipment system is mainly referred to the high temperature measurement (AMS 2750F) of the american society of automotive engineering, and the test method, the test thermocouple, the test meter and the like are clearly defined. When the system precision test is performed, the measuring end (hot end) of the test thermocouple is as close as possible to the testing end (hot end) of the control thermocouple, the required distance is not more than 76mm (3 inches), and the position and depth of the tested thermocouple (control thermocouple) during the system precision (SAT) periodic test are consistent with those during the first test. However, the existing test is non-resident, when the system precision test is carried out on the heating furnace for the first time, a hole is formed beside the control record thermocouple protection tube and used for placing the test thermocouple lead tube, one person inserts the test thermocouple through the test thermocouple lead tube at the furnace top of the heating furnace during the test, and the other person enters the furnace cavity to determine the position and distance between the test thermocouple and the tested thermocouple, and after the determination is finished, the furnace top operator fixes the test thermocouple; and when the precision of the periodic system is tested, the heating furnace needs to be cooled, and then the operation is repeated. The non-resident test means has the following disadvantages:
firstly, at least two persons are required to cooperate to perform a test, one person is required to enter the furnace, the labor intensity and the personal safety risk are increased, in addition, the positions, the distances and the depths of the test thermocouples and the tested thermocouples are manually adjusted, especially when the heating furnace is subjected to periodic system precision test, the front and rear positions are inconsistent easily, the test precision and the accuracy are affected, especially when the distance between the control thermocouples and the test thermocouples is the smallest (the distance is the higher than the minimum precision), the test thermocouples are easy to swing in a thermal atmosphere environment, and the measurement ends of the control thermocouples and the test thermocouples are contacted to cause short circuit to cause test failure;
secondly, when the periodic system precision is tested, the heating furnace needs to be cooled firstly and then the operation testing flow is repeated, so that the production progress is influenced while time and energy are consumed;
thirdly, a test hole is required to be opened beside the outer protection tube of the control thermocouple of the heating furnace top, the heat preservation performance of the hearth is affected, and the furnace shell is easily damaged.
In view of the above, the present inventors have proposed an integrated device for controlling a thermocouple and a test thermocouple to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides an integrated device for controlling a thermocouple and a test thermocouple, which can accurately control the distance between the test thermocouple and the control thermocouple and ensure the consistency, the accuracy and the test precision of periodic test.
The utility model aims at solving the problems by the following technical scheme:
the integrated device comprises a flange plate detachably connected with a shell of a heating furnace body to be tested, wherein a first mounting hole for mounting the test thermocouple and a plurality of second mounting holes for mounting the control thermocouple are formed in the flange plate, the second mounting holes are distributed in an annular array around the first mounting hole, and the first mounting hole is formed in the center of the flange plate;
the corundum guide tube is arranged at the bottom of the flange plate, a sealing gasket is arranged between the corundum guide tube and the flange plate, the corundum guide tube and the first mounting hole are coaxially arranged and used for being penetrated by a test thermocouple wire, through holes corresponding to the number and the positions of the second mounting holes one by one are axially formed in the tube wall of the corundum guide tube, the through holes are located between the inner wall and the outer wall of the corundum guide tube and used for being penetrated by a control thermocouple wire, and a chamfer is arranged at one end, far away from the flange plate, of the corundum guide tube and used for blocking the contact between the test thermocouple wire and the control thermocouple wire at a measuring end.
Further, the chamfer angle is set to be 30-60 degrees; preferably, the chamfer is 45 °.
Further, the center hole distance between the first mounting hole and the second mounting hole is 3-10 mm.
Further, the diameter of the corundum guide tube is 8-12 mm, and the aperture of the central tube hole is 5-6 mm.
Further, the flange plate, the sealing gasket and the corundum guide tube are connected in an adhesive mode.
Further, the flange plate is a ceramic flange plate.
Further, the number of the through holes is 4+2N, wherein N is a natural number, and the aperture of the through holes is 1-1.2 mm.
Further, the length of the corundum guide tube is consistent with the length of the test thermocouple.
Further, the integrated device also includes a tapered plug for plugging the first mounting hole.
Compared with the prior art, the utility model has the following beneficial effects:
according to the integrated device for the control thermocouple and the test thermocouple, provided by the utility model, the distance between the test thermocouple and the control thermocouple is ensured, the distance between the test thermocouple and the control thermocouple can be minimized at the test end in real time, in addition, as the control thermocouple wire is arranged on the pipe wall of the corundum guide pipe, the test thermocouple wire is positioned in the center hole of the corundum guide pipe, and the corundum guide pipe positioned at the test end is provided with the chamfer with a conical surface, the possibility of contact between the control thermocouple wire and the test thermocouple wire even under the thermal atmosphere environment of the heating furnace is blocked by the chamfer and the length of the corundum guide pipe, so that the phenomenon of short circuit caused by contact between the control thermocouple wire and the test thermocouple wire at the measurement end is avoided. Compared with the prior art, through the use of the integrated device, the consistency, the accuracy and the test precision of periodic test are ensured, the test efficiency and the utilization rate of the heating furnace are improved, the field labor intensity is reduced, and the personal safety of operators is ensured; meanwhile, the test hole is prevented from being opened beside the thermocouple outer protection tube at the top of the heating furnace, the heat dissipation capacity of the furnace temperature is reduced, the heat preservation performance of the hearth is improved, the furnace shell is protected, and the service life of equipment is prolonged.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate principles of the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of an integrated device according to the present utility model;
FIG. 2 is a schematic diagram of the front view of the integrated device of the present utility model;
FIG. 3 is a schematic top view of an integrated device according to the present utility model.
Wherein: 1 is a flange plate; 2 is a sealing gasket; 3 is corundum guide tube; 11 is a first mounting hole; 12 is a second mounting hole; 31 are through holes.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of devices that are consistent with aspects of the utility model that are set forth in the following claims.
The present utility model will be described in further detail below with reference to the drawings and examples for better understanding of the technical solutions of the present utility model to those skilled in the art.
Referring to fig. 1 to 3, the integrated device for controlling thermocouples and testing thermocouples provided by the utility model comprises a flange plate detachably connected with a top shell of a heating furnace body to be tested, for example, the flange plate and the flange plate can be fixedly connected through bolts, a first mounting hole 11 for mounting the testing thermocouples and a plurality of second mounting holes 12 for mounting the controlling thermocouples are arranged on the flange plate 1, the plurality of second mounting holes 12 are distributed in an annular array around the first mounting hole 11, and the first mounting hole 11 is arranged at the center position of the flange plate 1. The bottom of the flange plate 1 is fixedly connected with a corundum guide tube 3 with a set length, a sealing gasket 2 is arranged between the corundum guide tube 3 and the flange plate 1, and preferably, the flange plate 1 is a ceramic flange plate and is fixedly connected with the sealing gasket 2 and the corundum guide tube 3 into a whole in an adhesive mode.
Specifically, in the embodiment of the utility model, the corundum guide tube 3 is coaxially arranged with the first mounting hole 11, the central tube hole of the corundum guide tube 3 is used for penetrating a test thermocouple wire, in addition, through holes 31 corresponding to the number and the positions of the second mounting holes 12 are formed in the tube wall of the corundum guide tube 3 in a one-to-one correspondence manner, the through holes 31 are positioned between the inner wall and the outer wall of the corundum guide tube 3 and used for controlling the penetration of the thermocouple wire, the positive electrode and the negative electrode are judged according to the hardness of the control thermocouple wire, the terminal of the ceramic flange plate 1 is correspondingly connected, the number of the preferable through holes 31 is generally 4+2N, wherein N is a natural number, and the diameter of the thermocouple wire is about 0.5mm, so the through holes 31 are generally set to be 1-1.2 mm. It is particularly notable that the integrated device is provided with a chamfer at one end (i.e. the measuring end or the hot end) of the corundum guide tube 3 far away from the flange plate 1, the chamfer is generally set to 30-60 degrees, preferably 45 degrees, i.e. the measuring end of the corundum guide tube 3 extending into the heating furnace is set to be a conical surface, so that a plurality of control thermocouple wires are positioned on the conical surface of the measuring end of the corundum guide tube 3, and the test thermocouple wires are positioned at the central tube hole of the corundum guide tube 3, thereby blocking the possibility that the test thermocouple wires are contacted with the control thermocouple wires at the measuring end, avoiding short circuit caused by contact of the test thermocouple wires at the measuring end while ensuring the minimum distance between the test thermocouple wires, and improving the test qualification rate and the test data accuracy. It is also preferred to provide a chamfer only at the point where the corundum guide tube 3 extends into the furnace, at the through hole 31, to prevent the control thermocouples from touching each other while touching the test thermocouple.
Further, in the embodiment of the utility model, the center hole distance between the first mounting hole 11 and the second mounting hole 12 is equal to the center hole distance between the center pipe hole of the corundum guide pipe 3 and the through hole 31, and the hole distance is 3-10 mm, so that the interval between the control thermocouple and the test thermocouple is 3-10 mm; in addition, the measuring end of the test thermocouple exceeds the length of the corundum guide tube 3 by 5-10 mm, the diameter of the corundum guide tube 3 is 8-12 mm, and the aperture of the central tube hole is 5-6 mm. According to the embodiment of the utility model, the four through holes on the corundum guide tube 3 are used as control thermocouples, the central tube hole is used as a test thermocouple, the materials of the couple are noble metals, an outer protection tube is sleeved outside the corundum guide tube 3 in actual use, and the bottom end is in a closed state, namely, the measurement end of the corundum guide tube is not in direct contact with the atmosphere in the furnace no matter the corundum guide tube is used as the control thermocouple or the test thermocouple.
In addition, the integrated device of the embodiment of the utility model further comprises a conical plug for plugging the first mounting hole 11, and when the test is not needed, the test hole is plugged by the conical plug, so that the heat dissipation of the furnace temperature is avoided, and the heat preservation performance of the hearth is improved.
The utility model relates to an integrated device for controlling a thermocouple and a test thermocouple, which comprises the following using processes:
firstly, confirming whether the state of a heating furnace to be tested is normal, checking whether a control thermocouple and a test thermocouple integrated device are correctly installed in a furnace body, and setting a test temperature;
then, a test thermocouple is inserted into a central tube hole of the corundum guide tube 3, and a compensating wire is connected to a safe operation station;
secondly, heating the heating furnace, and after the furnace temperature of the heating furnace is stable, respectively acquiring data of each zone, and simultaneously recording the data of the data acquisition device and the data of the control recording instrument;
then, comparing the acquired data with the control record data, and judging whether the test result accords with the corresponding grade heating furnace or not and whether the maximum SAT allowable deviation is met or not;
and finally, if the test result does not meet the maximum allowable deviation of the system precision test corresponding to the heating furnace, the reason is found out, and the steps are repeated until the requirement is met.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model.
It will be understood that the utility model is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
1. The integrated device for the control thermocouple and the test thermocouple is characterized by comprising a flange plate (1) detachably connected with a shell of a heating furnace body to be tested, wherein a first mounting hole (11) for mounting the test thermocouple and a plurality of second mounting holes (12) for mounting the control thermocouple are formed in the flange plate (1), the second mounting holes (12) are distributed in an annular array around the first mounting hole (11), and the first mounting hole (11) is formed in the center position of the flange plate (1);
the device comprises a flange plate (1), and is characterized in that a corundum guide tube (3) with a set length is fixedly connected to the bottom of the flange plate (1), a sealing gasket (2) is arranged between the corundum guide tube (3) and the flange plate (1), the corundum guide tube (3) and a first mounting hole (11) are coaxially arranged and used for being penetrated by a test thermocouple wire, through holes (31) corresponding to the number and the positions of second mounting holes (12) one by one are axially formed in the tube wall of the corundum guide tube (3), the through holes (31) are located between the inner wall and the outer wall of the corundum guide tube (3) and used for being penetrated by a control thermocouple wire, and one end, far away from the flange plate (1), of the corundum guide tube (3) is provided with a chamfer angle for blocking the test thermocouple wire from contacting with the control thermocouple wire at a measuring end.
2. An integrated control thermocouple and test thermocouple device according to claim 1, in which the chamfer is provided at 30 ° to 60 °.
3. An integrated control thermocouple and test thermocouple device according to claim 2, in which the chamfer is 45 °.
4. An integrated control thermocouple and test thermocouple device according to any of claims 1 to 3, characterised in that the centre hole spacing between the first mounting hole (11) and the second mounting hole (12) is 3 to 10mm.
5. The device for integrating a control thermocouple and a test thermocouple according to claim 4, wherein the corundum guide tube (3) has an outer diameter of 8-12 mm and a central tube hole diameter of 5-6 mm.
6. The integrated device for controlling thermocouples and testing thermocouples according to claim 4, wherein the flange plate (1), the sealing gasket (2) and the corundum guide tube (3) are connected by means of bonding.
7. An integrated device for controlling thermocouples and testing thermocouples according to claim 4, wherein the flange (1) is a ceramic flange.
8. An integrated device for controlling thermocouples and testing thermocouples according to claim 4, wherein the number of the through holes (31) is 4+2n, where N is a natural number, and the aperture of the through holes (31) is 1-1.2 mm.
9. An integrated control thermocouple and test thermocouple device according to claim 4, characterised in that the length of the measuring end of the test thermocouple exceeds the length of the corundum guide tube (3) by 5-10 mm.
10. An integrated device for controlling thermocouples and testing thermocouples according to claim 4, characterised in that the integrated device further comprises a conical plug for plugging the first mounting holes (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223389273.9U CN219391172U (en) | 2022-12-16 | 2022-12-16 | Integrated device for controlling thermocouple and testing thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223389273.9U CN219391172U (en) | 2022-12-16 | 2022-12-16 | Integrated device for controlling thermocouple and testing thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219391172U true CN219391172U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223389273.9U Active CN219391172U (en) | 2022-12-16 | 2022-12-16 | Integrated device for controlling thermocouple and testing thermocouple |
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| Country | Link |
|---|---|
| CN (1) | CN219391172U (en) |
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- 2022-12-16 CN CN202223389273.9U patent/CN219391172U/en active Active
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