CN110068396B - Wireless thermocouple - Google Patents
Wireless thermocouple Download PDFInfo
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- CN110068396B CN110068396B CN201910460001.7A CN201910460001A CN110068396B CN 110068396 B CN110068396 B CN 110068396B CN 201910460001 A CN201910460001 A CN 201910460001A CN 110068396 B CN110068396 B CN 110068396B
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- circuit board
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a wireless thermocouple, which comprises a receiving host, a protective sleeve, an electronic bin, a circuit board and a thermocouple, wherein the thermocouple is arranged in the protective sleeve, one end of the thermocouple extends into the electronic bin and is connected with the circuit board, the circuit board is provided with a data acquisition module, a data front-end processing module, a data processing module and a wireless communication module, thermoelectromotive force is acquired from the thermocouple through the data acquisition module, amplified and filtered through the data front-end processing module, analog signals are converted into digital signals through the data processing module, the thermoelectromotive force is directly converted into temperature by combining cold-end temperature compensation signals and the temperature characteristic of the thermocouple, the temperature is transmitted to the wireless communication module, the wireless communication module transmits the data to the receiving host according to preset data transmission requirements and communication protocols, and the receiving host receives and transmits the data to a cloud platform, and the gridding control of the temperature is realized.
Description
Technical Field
The invention relates to a wireless thermocouple.
Background
In industrial processes, temperature is one of the important parameters that needs to be measured and controlled. In temperature measurement, the application of the thermocouple or the thermal resistor is very wide, and the thermocouple or the thermal resistor has the advantages of simple structure, convenience in manufacturing, wide measurement range, high precision, small inertia, convenience in remote transmission of output signals and the like. In addition, since the thermocouple or the thermal resistor is an active sensor, no external power supply is required for measurement, and the energy consumption is low, the thermocouple or the thermal resistor is often used for measuring the temperature of gas or liquid in a furnace or a pipeline and the surface temperature of solid.
The conventional thermocouple or thermal resistor has different shapes according to requirements, but the basic composition structures of the thermocouple or the thermal resistor are almost the same, generally comprises main parts such as a thermal electrode, an insulating sleeve protection tube, a junction box and the like, and is generally matched with a display instrument, a recording instrument and an electronic regulator for use. The basic principle of thermocouple temperature measurement is that two material conductors with different components form a closed loop, when temperature gradients exist at two ends of a thermocouple, current passes through the loop, and electromotive force, namely thermoelectric potential, exists between the two ends, so-called Seebeck effect. The homogeneous conductors of the two different compositions are hot electrodes, the end with the higher temperature being the working end and the end with the lower temperature being the free end, which is usually at some constant temperature. According to the functional relation between the thermoelectromotive force and the temperature, a thermocouple graduation table is manufactured; if the temperature of the cold end (environment) changes during measurement, the accuracy of measurement is seriously influenced. Therefore, certain measures are taken for compensation at the cold end, and the influence caused by the temperature change of the cold end is called that the cold end compensation of the thermocouple is normal.
Meanwhile, in the prior art, a long lead is often needed for transmitting a weak thermoelectromotive force signal sensed by a thermocouple to a display instrument, and the signal is an analog quantity signal, so that the thermoelectromotive force signal is easily interfered in the transmission process, and the reliability of data is influenced; in addition, the wire transmission mode has high cost and larger maintenance difficulty; and meanwhile, the analog signals are inconvenient for the control system to use data. Meanwhile, in the prior art, a compensation wire is adopted in the cold end compensation aspect, but the structure is complex, and the actual temperature of the cold end cannot be completely and accurately reflected. If the measured target temperature is higher, the temperature is easy to conduct the cold end, so that the difference between the cold end temperature and the hot end temperature is very small, the test advantage of the thermocouple is hardly reflected even if a temperature compensation mode is adopted, and the problem that the service life of an electronic device is reduced due to the high temperature of the cold end is easy to cause is solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wireless thermocouple which does not need cable connection, has low use cost, convenient installation, accurate temperature measurement and good electronic cabin sealing performance, can transmit temperature information to a receiving host machine in a wireless signal mode, is convenient to realize temperature gridding control and has practicability and wide application.
In order to solve the problems, the invention adopts the following technical scheme:
a wireless thermocouple comprises a receiving host, a protective sleeve, an electronic bin, a circuit board and a thermocouple, wherein an electronic bin cover is arranged at the upper end of the electronic bin, the thermocouple is arranged in the protective sleeve, one end of the thermocouple extends into the electronic bin and is connected with the circuit board, a data acquisition module, a data front-end processing module, a data processing module and a wireless communication module are arranged on the circuit board, the data acquisition module is used for acquiring thermoelectromotive force from the thermocouple, the data front-end processing module is used for amplifying and filtering acquired analog signals, the data processing module is used for converting the analog signals into digital signals and combining cold-end temperature compensation signals and the temperature characteristics of the thermocouple to directly convert the thermoelectromotive force into temperature and transmit the temperature to the wireless communication module, the wireless communication module is used for transmitting data information to the receiving host, and the wireless communication module comprises a data receiving and transmitting unit and an antenna, the data acquisition module is connected with the thermocouple, a temperature probe is arranged at the upper end of the circuit board, the thermocouple comprises a positive hot electrode and a negative hot electrode, the bottoms of the positive hot electrode and the negative hot electrode are connected to form a hot end, and the upper ends of the positive hot electrode and the negative hot electrode are directly connected with the circuit board and form a cold end of the thermocouple.
Be equipped with first terminal and second terminal on the circuit board, the cold junction of positive thermal electrode and negative thermal electrode is connected in first terminal and second terminal respectively, temperature probe fixes on first terminal, be equipped with heat conduction silica gel between temperature probe and the first terminal.
The electronic cabin is characterized in that a plug interface protruding outwards is arranged on the side portion of the electronic cabin, a plug is installed on the plug interface, a containing cavity is formed in the plug interface, the antenna is installed in the containing cavity and connected with the data receiving and transmitting unit, and the plug is made of plastic materials.
The electronic cabin is internally provided with a fixed power supply, the electronic cabin is internally provided with a power supply seat, the fixed power supply is fixed on the power supply seat, and the fixed power supply is connected with the circuit board by a connector with a lead.
The electronic cabin is characterized in that a boss extending inwards is arranged at the lower end of the inside of the electronic cabin, a groove is formed in the boss, a second sealing ring is arranged in the groove, an extending part extending inwards is arranged at the bottom of the electronic cabin, a groove is formed in the top end of the extending part, and a first sealing ring is arranged in the groove.
The electronic bin is characterized in that a cover plate is arranged inside the electronic bin, two copper columns are arranged between the circuit board and the cover plate, the lower ends of the copper columns penetrate through the cover plate to be in threaded connection with a boss inside the electronic bin, the cover plate is fixed on the boss, and the circuit board is fixed at the upper ends of the copper columns.
And a third sealing ring is arranged at the joint of the copper column and the cover plate.
An annular sealing cavity is formed among the extending part, the cover plate and the electronic bin, an air inlet hole and an air outlet hole are formed in the bottom of the annular sealing cavity, and the air inlet hole and the air outlet hole penetrate through the bottom of the electronic bin.
A partition is arranged between the air inlet hole and the air outlet hole, and the two sides of the partition are respectively connected with the boss and the extending part.
The protective sheath is connected with the electron storehouse, and electron storehouse, electron storehouse lid, protective sheath, end cap constitute a seal structure body, and seal structure body holds thermocouple, circuit board and antenna wherein, the outside welding of protective sheath has a connecting seat, is equipped with the screw thread on the connecting seat.
According to the invention, the temperature probe is arranged at one end of the cold end of the thermocouple, and the cold end is measured by the temperature probe, so that the accuracy of temperature detection is improved; the data acquisition module, the data front-end processing module, the data processing module and the wireless communication module are arranged in the electronic bin, so that the thermal electromotive force sensed by the thermocouple is directly converted into a temperature signal in the electronic bin, the signal is less interfered by the outside, the reliability of the tested data is improved, meanwhile, the obtained temperature data can be wirelessly transmitted, the traditional mode of cable transmission is changed, the use cost is reduced, the temperature measuring device is more convenient to use, and the grid management of the temperature measuring device is facilitated; meanwhile, the electronic bin is sealed, so that the heat and the external environment cannot interfere with electronic elements in the electronic bin, the accuracy of temperature detection is improved, the service life of each electronic element is prolonged, and the electronic bin has practicability and wide application range.
As an optimal technical scheme, a first binding post and a second binding post are arranged on the circuit board, cold ends of the positive thermal electrode and the negative thermal electrode are respectively connected with the first binding post and the second binding post, the temperature probe is fixed on the first binding post, and heat-conducting silica gel is arranged between the temperature probe and the first binding post.
This setting for the temperature of thermocouple cold junction can be accurate to the measurement of temperature probe, has improved its precision simultaneously.
According to the preferable technical scheme, an outwardly-protruding plug interface is arranged on the side portion of the electronic bin, a plug is mounted on the plug interface, a containing cavity is formed in the plug interface, the antenna is mounted in the containing cavity and connected with the data receiving and transmitting unit, and the plug is made of plastic materials.
This setting for the electron storehouse has better leakproofness, has guaranteed simultaneously that wireless signal on the antenna can normal transmission, makes temperature measuring device can normally work.
As a preferred technical scheme, a fixed power supply is arranged in the electronic bin, a power supply seat is arranged in the electronic bin, the fixed power supply is fixed on the power supply seat, and the fixed power supply is connected with the circuit board through a connector with a lead.
The temperature measuring device can work through an internal power supply, and is more convenient to use; meanwhile, the subsequent fixed power supply is convenient to replace.
According to the preferable technical scheme, the lower end of the inside of the electronic bin is provided with a boss extending inwards, the boss is provided with a groove, a second sealing ring is arranged in the groove, the bottom of the electronic bin is provided with an extending part extending inwards, the top end of the extending part is provided with a groove, and a first sealing ring is arranged in the groove.
This setting for the electron storehouse has better leakproofness, and the inside heat of protective sheath can not directly flow in the electron storehouse, makes the temperature can not lead to the fact the influence to the inside electronic component in electron storehouse, has improved the accurate nature of temperature detection simultaneously.
According to the preferable technical scheme, a cover plate is arranged inside the electronic bin, two copper columns are arranged between the circuit board and the cover plate, the lower ends of the copper columns penetrate through the cover plate to be in threaded connection with a boss inside the electronic bin, the cover plate is fixed on the boss, and the circuit board is fixed at the upper ends of the copper columns.
This setting for keep having certain distance between apron and the circuit board, make the temperature on the apron can not cause the influence to the circuit board, improved circuit board and each electronic component's on the circuit board life.
As a preferred technical scheme, a third sealing ring is arranged at the joint of the copper column and the cover plate.
This setting prevents that the heat in the annular seal cavity from getting into the inside in electron storehouse along the copper post, guarantees electronic component's normal work in the electron storehouse, improves electronic component's life, indirect promotion the accurate nature when the temperature detects.
As a preferred technical scheme, an annular sealing cavity is formed among the extension part, the cover plate and the electronic bin, an air inlet hole and an air outlet hole are formed in the bottom of the annular sealing cavity, and the air inlet hole and the air outlet hole penetrate through the bottom of the electronic bin.
This setting for the annular seal cavity can lead to the strength that compressed air or nitrogen gas etc. have pressure, through the sealed intracavity circulation of the gaseous that has pressure, takes the heat out of sealed chamber, prevents that heat transfer from getting into the electron storehouse in, improves the accurate nature that the temperature detected simultaneously.
As the preferred technical scheme, a separation barrier is arranged between the air inlet hole and the air outlet hole, and the two sides of the separation barrier are respectively connected with the lug boss and the extension part.
The arrangement enables the gas in the annular sealing cavity to form a circulation, and the heat inside the annular sealing cavity is taken out through the circulation.
According to the preferable technical scheme, the protective sleeve is connected with the electronic bin, the electronic bin cover, the protective sleeve and the plug form a sealing structure body, the sealing structure body contains the thermocouple, the circuit board and the antenna, a connecting seat is welded on the outer side of the protective sleeve, and threads are arranged on the connecting seat.
This setting for temperature measuring device has better leakproofness, and the installation and the fixing of temperature measuring device are convenient for simultaneously.
The invention has the beneficial effects that:
and cable connection is not needed, so that the mounting structure is simplified, and the use cost is saved.
And secondly, the thermocouple adopts wireless data transmission, can be randomly networked during use, and is very convenient to install and apply.
And thirdly, the electronic bin is integrally sealed, heat and external factors are difficult to influence electronic elements in the electronic bin, the electronic elements are good in working stability, and the temperature test accuracy is high.
And fourthly, the temperature probe directly measures the temperature of the cold end, so that the accuracy of temperature test is improved.
And fifthly, the thermoelectromotive force sensed by the thermocouple is directly converted into a temperature signal in the electronic cabin, so that the signal is less interfered by the outside, and the reliability of the test data is improved.
Sixthly, the lower part of the electronic bin is provided with an air inlet hole and an air outlet hole, so that the stability of the temperature of the cold end is guaranteed, the ambient temperature of the electronic bin is reduced, and the working stability of elements of the electronic bin is improved.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, but the protection scope of the present invention is not limited.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the thermocouple location of the present invention;
FIG. 4 is a schematic view of the fixed power source installation of the present invention;
FIG. 5 is a schematic view of the terminal mounting of the present invention;
FIG. 6 is a schematic view of the present invention showing the position of the shelves;
FIG. 7 is a schematic view of the seal ring installation of the present invention;
FIG. 8 is a schematic diagram of the principles of the present invention;
the electronic device comprises a protective sleeve 1, an electronic bin 2, an electronic bin cover 3, a plug 4, a connecting seat 5, a positive hot electrode 6, a negative hot electrode 7, a circuit board 8, a fixed power supply 9, a power supply seat 10, an antenna 11, a plug interface 12, a cover plate 13, a cover plate 14, an annular sealing cavity, a copper column 15, a temperature probe 16, a first sealing ring 17, a second sealing ring 18, an air inlet 19, an air outlet 20, a partition 21, an extension 22, a boss 23, a first wiring terminal 24, a capacitor 25, a data acquisition module 27, a data front-end processing module 28, a data processing module 29, a wireless communication module 30, a data transceiving unit 31, a receiving host, a cloud platform 32, a cloud platform 33, a third sealing ring 34 and a second wiring terminal.
Detailed Description
Referring to fig. 1 to 8, a wireless thermocouple includes a protection cover 1, an electronic cabin 2, a circuit board 8, a thermocouple, a receiving host 31 and a cloud platform 32, the protection cover 1 is connected to the electronic cabin 2, an electronic cabin cover 3 is disposed at an upper end of the electronic cabin 2, a connection seat 5 is welded at an outer side of the protection cover 1, a screw thread is disposed on the connection seat 5, the thermocouple is disposed inside the protection cover 1, one end of the thermocouple extends into the electronic cabin 2 and is connected to the circuit board 8, a data acquisition module 26, a data front-end processing module 27, a data processing module 28 and a wireless communication module 29 are disposed on the circuit board 8, the data acquisition module 26 is used for acquiring a thermal electromotive force from the thermocouple, the data front-end processing module 27 is used for amplifying and filtering acquired analog signals, and the data processing module 28 is used for converting analog signals into digital signals, the thermoelectric power is directly converted into temperature and transmitted to the wireless communication module 29 by combining a cold end temperature compensation signal and the temperature characteristic of the thermocouple, the wireless communication module 29 is used for transmitting data information to the receiving host 31, the receiving host 31 receives and transmits the data to the cloud platform 32, the data is subjected to gridding management through the cloud platform 32, the wireless communication module 29 comprises a data receiving and transmitting unit 30 and an antenna 11, the data acquisition module 26 is connected with the thermocouple, the upper end of the circuit board 8 is provided with a temperature probe 16, the thermocouple comprises a positive thermal electrode 6 and a negative thermal electrode 7, the bottoms of the positive thermal electrode 6 and the negative thermal electrode 7 are connected to form a hot end, the upper ends of the positive thermal electrode 6 and the negative thermal electrode 7 are directly connected with the circuit board 8 to form a cold end binding post of the thermocouple, the circuit board 8 is provided with a first binding post 24 and a second binding, the cold ends of positive hot electrode and negative hot electrode are respectively in first terminal 24 and second terminal connection 34, temperature probe 16 is fixed on first terminal 24, be equipped with heat conduction silica gel (not shown) between temperature probe 16 and first terminal 24.
The side part of the electronic bin 2 is provided with an outwardly convex plug interface 12, a plug 4 is installed on the plug interface 12, a containing cavity is formed in the plug interface 12, the antenna 11 is installed in the containing cavity, the antenna 11 is connected with the data receiving and transmitting unit 30, the plug 4 is made of plastic materials, a fixed power supply 9 is arranged in the electronic bin 2, a power supply seat 10 is arranged in the electronic bin 2, the fixed power supply 9 is fixed on the power supply seat 10, and the fixed power supply 9 is connected with the circuit board 8 through a connector with a lead.
The lower end of the inside of the electronic bin 2 is provided with a boss 23 extending inwards, the boss 23 is provided with a groove, a second sealing ring 18 is arranged in the groove, the bottom of the electronic bin 2 is provided with an extending part 22 extending inwards, the top end of the extending part 22 is provided with a groove, a first sealing ring 17 is arranged in the groove, the inside of the electronic bin 2 is provided with a cover plate 13, two copper columns 15 are arranged between the circuit board 6 and the cover plate 13, the lower ends of the copper columns 15 penetrate through the cover plate 13 to be in threaded connection with the boss 23 in the inside of the electronic bin 2, the cover plate 13 is fixed on the boss 23, the circuit board 8 is fixed at the upper ends of the copper columns 15, a third sealing ring 33 is arranged at the connection part of the copper columns 15 and the cover plate 13, an annular sealing cavity 14 is formed among the extending part 22, the cover plate 13 and the electronic bin 2, the bottom of the annular sealing cavity 14 is provided with an air, a partition 21 is arranged between the air inlet hole 19 and the air outlet hole 20, and two sides of the partition 21 are respectively connected with a boss 23 and an extension part 22.
When the temperature measuring device is used, the temperature measuring device can be fixed on a measured object through the connecting seat according to the using condition, the data acquisition module acquires the thermoelectromotive force from the thermocouple, the data front-end processing module amplifies and filters the analog signal, the data processing module converts the analog signal into the digital signal, the temperature probe measures the temperature of the cold end, the cold end temperature compensation signal and the temperature characteristic of the thermocouple are combined, the thermoelectromotive force is directly converted into the temperature and is transmitted to the wireless communication module, the wireless communication module transmits the data to the receiving host according to the preset data transmission requirement and the communication protocol, and finally the receiving host receives and transmits the data to the cloud platform, so that the gridding control of data information is realized.
When the thermocouple is at a high temperature during working, the temperature is transferred to the annular sealing cavity by the extension part, and the heat in the annular sealing cavity is taken out through the air inlet and the air outlet at the lower end of the electronic bin under the action of air circulation, so that the aim of cooling is fulfilled, the temperature is difficult to transfer into the electronic bin, the stability of the temperature in the electronic bin is ensured, the testing accuracy is improved, and the service life of electronic elements in the electronic bin is prolonged.
The data acquisition module, the data front-end processing module, the data processing module and the wireless communication module are connected through a circuit.
The electronic cabin is of a full-sealing structure.
The temperature probe can also be arranged on the second binding post, and the cold end temperature can be tested through the second binding post.
The invention achieves the following advantages:
and cable connection is not needed, so that the mounting structure is simplified, and the use cost is saved.
And secondly, the thermocouple adopts wireless data transmission, can be randomly networked during use, and is very convenient to install and apply.
And thirdly, the electronic bin is integrally sealed, heat and external factors are difficult to influence electronic elements in the electronic bin, the electronic elements are good in working stability, and the temperature test accuracy is high.
And fourthly, the temperature probe directly measures the temperature of the cold end, so that the accuracy of temperature test is improved.
And fifthly, the thermoelectromotive force sensed by the thermocouple is directly converted into a temperature signal in the electronic cabin, so that the signal is less interfered by the outside, and the reliability of the test data is improved.
Sixthly, the lower part of the electronic bin is provided with an air inlet hole and an air outlet hole, so that the stability of the temperature of the cold end is guaranteed, the ambient temperature of the electronic bin is reduced, and the working stability of elements of the electronic bin is improved.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (3)
1. A wireless thermocouple comprises a receiving host, a protective sleeve, an electronic bin, a circuit board and a thermocouple, wherein an electronic bin cover is arranged at the upper end of the electronic bin, the thermocouple is arranged in the protective sleeve, one end of the thermocouple extends into the electronic bin and is connected with the circuit board, a data acquisition module, a data front-end processing module, a data processing module and a wireless communication module are arranged on the circuit board, the data acquisition module is used for acquiring thermoelectromotive force from the thermocouple, the data front-end processing module is used for amplifying and filtering acquired analog signals, the data processing module is used for converting the analog signals into digital signals, directly converting the thermoelectromotive force into temperature and transmitting the temperature to the wireless communication module, the wireless communication module is used for transmitting data information to the receiving host, and the wireless communication module comprises a data receiving and transmitting unit and an antenna, the data acquisition module is connected with the thermocouple, and is characterized in that: the upper end of the circuit board is provided with a temperature probe, the thermocouple comprises a positive hot electrode and a negative hot electrode, the bottoms of the positive hot electrode and the negative hot electrode are connected to form a hot end, and the upper ends of the positive hot electrode and the negative hot electrode are directly connected with the circuit board to form a cold end of the thermocouple; the circuit board is provided with a first wiring terminal and a second wiring terminal, cold ends of the positive thermal electrode and the negative thermal electrode are respectively connected with the first wiring terminal and the second wiring terminal, the temperature probe is fixed on the first wiring terminal, and heat-conducting silica gel is arranged between the temperature probe and the first wiring terminal; the side part of the electronic bin is provided with an outwardly-protruding plug interface, a plug is mounted on the plug interface, a containing cavity is arranged inside the plug interface, the antenna is mounted in the containing cavity and connected with the data receiving and transmitting unit, and the plug is made of plastic materials; a fixed power supply is arranged in the electronic bin, a power supply seat is arranged in the electronic bin, the fixed power supply is fixed on the power supply seat, and the fixed power supply is connected with the circuit board by a connector with a lead; the electronic cabin is characterized in that a cover plate is arranged inside the electronic cabin, two copper columns are arranged between the circuit board and the cover plate, the lower ends of the copper columns penetrate through the cover plate to be in threaded connection with a boss inside the electronic cabin and fix the cover plate on the boss, a groove is formed in the boss, a second sealing ring is arranged in the groove, an extending portion extending inwards is arranged at the bottom of the electronic cabin, a groove is formed in the top end of the extending portion, a first sealing ring is arranged in the groove, the circuit board is fixed at the upper end of the copper columns, an annular sealing cavity is formed among the extending portion, the cover plate and the electronic cabin, an air inlet hole and an air outlet hole are formed in the bottom of the annular sealing cavity and penetrate through the bottom of the electronic cabin, a partition is arranged between the air inlet hole and the air.
2. A wireless thermocouple according to claim 1, wherein: and a third sealing ring is arranged at the joint of the copper column and the cover plate.
3. A wireless thermocouple according to claim 1, wherein: the protective sheath is connected with the electron storehouse, and electron storehouse, electron storehouse lid, protective sheath, end cap constitute a seal structure body, and seal structure body holds thermocouple, circuit board and antenna wherein, the outside welding of protective sheath has a connecting seat, is equipped with the screw thread on the connecting seat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910460001.7A CN110068396B (en) | 2019-05-30 | 2019-05-30 | Wireless thermocouple |
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| CN201910460001.7A CN110068396B (en) | 2019-05-30 | 2019-05-30 | Wireless thermocouple |
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| CN110068396A CN110068396A (en) | 2019-07-30 |
| CN110068396B true CN110068396B (en) | 2020-11-13 |
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| CN110514309B (en) * | 2019-09-06 | 2021-07-06 | 杭州纵联科技有限公司 | Wireless temperature sensor and wireless temperature measuring device comprising same |
| CN110763362B (en) * | 2019-11-14 | 2021-01-15 | 中国计量科学研究院 | Pressure-controlled twisted platinum resistance thermometer |
| CN112903126B (en) * | 2021-01-26 | 2022-08-23 | 上海精普机电科技有限公司 | Wireless thermocouple and system |
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| CN205506245U (en) * | 2015-12-22 | 2016-08-24 | 郑州海威光电科技有限公司 | Novel portable temperature measurement box of wireless transmission |
| CN207066627U (en) * | 2017-07-26 | 2018-03-02 | 潍坊歌尔电子有限公司 | A kind of wireless type thermocouple temperature measuring apparatus |
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| CN110068396A (en) | 2019-07-30 |
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