CN218297437U - High-precision calibration device for short thermocouple - Google Patents
High-precision calibration device for short thermocouple Download PDFInfo
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- CN218297437U CN218297437U CN202221889315.2U CN202221889315U CN218297437U CN 218297437 U CN218297437 U CN 218297437U CN 202221889315 U CN202221889315 U CN 202221889315U CN 218297437 U CN218297437 U CN 218297437U
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Abstract
The utility model relates to the technical field of short thermocouple calibration devices, in particular to a high-precision calibration device of a short thermocouple, which is characterized by comprising a temperature control device and a short thermocouple detection device; the temperature control device is electrically connected with the short thermocouple detection device; the short thermocouple detection device comprises a short thermocouple socket to be detected, a heating through hole, a furnace foot, a standard thermocouple socket and a device shell; the device shell bottom is equipped with the stove foot, and the left and right sides is equipped with heating through-hole, and the front side is equipped with standard thermocouple socket, and the rear side is equipped with the short type thermocouple socket that awaits measuring. The beneficial effects of the utility model are that, this device detects short type thermocouple has high efficiency, stable advantage, only needs to judge whether qualified from the difference between the thermocouple that awaits measuring and standard thermoelectric even number value when detecting short type thermocouple in batches, reaches the calibration function of device.
Description
Technical Field
The utility model belongs to the technical field of short type thermocouple calibrating device technique and specifically relates to a high accuracy calibrating device of short type thermocouple.
Background
The thermocouple is a sensing device which directly converts heat energy into an electric signal and outputs a direct current voltage signal to realize rapid display, record and transmission of temperature data. The working principle of the thermocouple wire temperature measurement device is that the temperature difference between a temperature measurement port (cold end for short) of the thermocouple wire in a normal temperature environment and a temperature measurement port (hot end for short) of a test object environment is measured based on the Seebeck effect, the potential difference generated by the temperature difference between the cold end and the hot end of the thermocouple wire is calculated through the thermoelectric effect linear relation, and then the temperature of the detected object is measured. The thermocouple is widely used by various industries due to the characteristics of simple assembly, convenient replacement, good shock resistance, high measurement precision, quick thermal response, good pressure resistance and the like. At present, the structures of the thermocouples mainly comprise two types of standard thermocouples and non-standard thermocouples. The standard thermocouple mainly comprises a thermocouple wire, an insulating filling material, a high-temperature sealing material, a protective sleeve and a junction box, the test temperature is between 0 and 1800 ℃, and the dual functions of sealing and moisture prevention are realized between the thermocouple wire and a thermocouple probe tail compensation lead by applying the high-temperature sealing material. In addition, the sealing material also needs to have the characteristics of resistance wire obstruction, heat stress absorption, moisture resistance, low manufacturing cost, high reliability and the like.
The thermocouple is a temperature measuring element made of two different conductor materials based on the Seebeck effect, and is one of the most widely used temperature sensing elements in the field of temperature measurement. For short thermocouples with the length less than 200mm, a shaped calibration method does not exist in China, and a stable and reliable home-made calibration device is lacked.
SUMMERY OF THE UTILITY MODEL
In order to overcome the current not enough, the utility model provides a high accuracy calibrating device of short type thermocouple.
The utility model provides a technical scheme that its technical problem adopted is: a high-precision calibration device for a short thermocouple is characterized by comprising a temperature control device and a short thermocouple detection device; the temperature control device is electrically connected with the short thermocouple detection device; the short thermocouple detection device comprises a short thermocouple socket to be detected, a heating through hole, a furnace foot, a standard thermocouple socket and a device shell; the device shell bottom is equipped with the stove foot, and the left and right sides is equipped with heating through-hole, and the front side is equipped with standard thermocouple socket, and the rear side is equipped with the short type thermocouple socket that awaits measuring.
According to another embodiment of the present invention, it is further included that the standard thermocouple socket and the short thermocouple socket to be measured are opposite and not communicated with each other.
According to the utility model discloses a further embodiment, it is further including, the heating through-hole is equipped with a plurality of, is the circumference range, be equipped with the heating rod in the heating through-hole.
According to another embodiment of the present invention, the short thermocouple insertion holes to be measured are provided with a plurality of groups, which are horizontally arranged on the rear two sides of the device housing; the standard thermocouple sockets are provided with a plurality of groups which are horizontally arranged on the front side of the device shell.
According to the utility model discloses a further embodiment, further include, the heating rod is equipped with a plurality of groups, and the right side is connected with temperature control device through the electric wire.
According to the utility model discloses a further embodiment includes that, device shell device is made by heat-resisting alloy material, inside parcel insulation material.
According to another embodiment of the present invention, further comprising, the device housing means is made of heat resistant alloy material, and the inside is wrapped with heat insulating material.
The beneficial effects of the utility model are that, this device detects short type thermocouple has high efficiency, stable advantage, only needs to follow the difference between the thermocouple that awaits measuring and standard thermoelectric even number value when detecting short type thermocouple in batches and just can judge whether qualified the thermocouple that awaits measuring, reaches the calibration function of device.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a side view of a short thermocouple detection apparatus;
fig. 3 is a rear view of the present invention.
In the figure, 1, a temperature control device, 2, a short thermocouple detection device, 3, a short thermocouple socket to be detected, 4, a heating through hole, 5, a furnace foot, 6, a standard thermocouple socket, 7, a heating rod, 8 and a device shell.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention, and a high-precision calibration device for a short thermocouple is characterized by comprising a temperature control device 1 and a short thermocouple detection device 2; the temperature control device 1 is electrically connected with the short thermocouple detection device 2; the short thermocouple detection device 2 comprises a short thermocouple socket 3 to be detected, a heating through hole 4, a furnace foot 5, a standard thermocouple socket 6 and a device shell 8; the device is characterized in that furnace feet 5 are arranged at the bottom of a shell 8, heating through holes 4 are formed in the left side and the right side of the shell, a standard thermocouple socket 6 is arranged on the front side of the shell, and a short thermocouple socket 3 to be tested is arranged on the rear side of the shell.
According to another embodiment of the present invention, it is further included that the standard thermocouple socket 6 and the short thermocouple socket 3 to be tested are opposite and not communicated with each other.
According to the utility model discloses a further embodiment, further include, heating through-hole 4 is equipped with a plurality of, is the circumference range, be equipped with heating rod 7 in the heating through-hole 4.
According to another embodiment of the present invention, it further comprises that the short thermocouple sockets 3 to be measured are provided with a plurality of groups, and horizontally arranged on the two sides of the rear of the device housing 8; the standard thermocouple sockets 6 are provided with a plurality of groups and are horizontally arranged on the front side of the device shell 8.
Specifically, the standard thermocouple socket 6 and the short thermocouple socket are opposite to each other and are not communicated, a qualified standard thermocouple is inserted into the standard thermocouple socket 6, a short thermocouple to be detected is inserted into the opposite standard thermocouple socket 3 on the other side, the distance between the tail ends of the two thermocouples is short at the moment, the temperature of the surrounding environment is almost the same, the qualified standard thermocouple can measure a stable temperature value in the device, the value of the short thermocouple to be detected is compared with the qualified standard thermocouple, whether an error exists is obtained, and therefore whether the short thermocouple to be detected is qualified is obtained.
According to the utility model discloses a further embodiment, it is further included, heating rod 7 is equipped with a plurality of groups, and the right side is connected with temperature control device 1 through the electric wire.
Specifically, the heat source of the device is provided by a heating rod 7, a temperature is set by a temperature control device 1, and the heat is transmitted into a short thermocouple detection device 2 through the heating rod 7 to reach the internal temperature of the basic stable device; the temperature control device 1 controls temperature variables, and further realizes temperature rise and fall so as to meet different temperature measurement interval requirements.
According to another embodiment of the present invention, it further comprises that the device housing 8 is made of heat-resistant alloy material, and the inside is wrapped with heat-insulating material.
Specifically, in order to prevent the internal temperature from changing too quickly and further affecting the measurement accuracy, the device case 8 is filled with a heat insulating material with low thermal conductivity, such as asbestos, light-weight firebricks, or the like; the device shell 8 is made of heat-resistant alloy materials in order to prevent useless consumption caused by overheating, and the periphery of the device shell 8 is sealed to prevent scalding.
In the specific operation process, the temperature in the short thermocouple detection device 2 is controlled by the temperature control device 1, a qualified standard thermocouple is inserted into the standard thermocouple socket 6, a short thermocouple to be detected is inserted into the opposite standard thermocouple socket 3 on the other side, and then whether an error exists is obtained by comparing the numerical value difference between the qualified standard thermocouple and the short thermocouple to be detected, so that whether the short thermocouple to be detected is qualified is obtained.
The foregoing description is intended to be illustrative, rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations, or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A high-precision calibration device for a short thermocouple is characterized by comprising a temperature control device (1) and a short thermocouple detection device (2); the temperature control device (1) is electrically connected with the short thermocouple detection device (2); the short thermocouple detection device (2) comprises a short thermocouple socket (3) to be detected, a heating through hole (4), a furnace foot (5), a standard thermocouple socket (6) and a device shell (8); the device is characterized in that a furnace foot (5) is arranged at the bottom of a shell (8), heating through holes (4) are formed in the left side and the right side of the shell, a standard thermocouple socket (6) is arranged on the front side of the shell, and a short thermocouple socket (3) to be tested is arranged on the rear side of the shell.
2. The high-precision calibrating device for the short thermocouple according to claim 1, wherein the standard thermocouple socket (6) and the short thermocouple socket (3) to be tested are opposite and not communicated with each other.
3. The high-precision calibrating device for the short thermocouple according to claim 2, characterized in that the short thermocouple sockets (3) to be measured are provided with a plurality of groups which are horizontally arranged at the two rear sides of the device shell (8); the standard thermocouple sockets (6) are provided with a plurality of groups which are horizontally arranged on the front side of the device shell (8).
4. The high-precision calibrating device for the short thermocouple according to claim 1, wherein the heating through holes (4) are provided in a plurality of numbers in a circumferential arrangement, and the heating rods (7) are arranged in the heating through holes (4).
5. The high accuracy calibrating device for short thermocouple according to claim 4, wherein the heating rod (7) is provided with a plurality of groups, and the right side is connected with the temperature control device (1) through an electric wire.
6. A high accuracy calibrating device for short type thermocouples according to claim 1, wherein the device housing (8) is made of heat resistant alloy material and is internally wrapped with heat insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221889315.2U CN218297437U (en) | 2022-07-22 | 2022-07-22 | High-precision calibration device for short thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221889315.2U CN218297437U (en) | 2022-07-22 | 2022-07-22 | High-precision calibration device for short thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218297437U true CN218297437U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221889315.2U Active CN218297437U (en) | 2022-07-22 | 2022-07-22 | High-precision calibration device for short thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218297437U (en) |
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2022
- 2022-07-22 CN CN202221889315.2U patent/CN218297437U/en active Active
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