Multifunctional thermocouple wire temperature measuring device

Abstract

The invention relates to the technical field of thermocouples, in particular to a multifunctional thermocouple wire temperature measuring device which comprises thermocouple wires arranged in a vacuum tube and a receiving end connected with the vacuum tube, a frosted glass rod is connected between the thermocouple wires through a thermocouple fixing block, and a demagnetization box is arranged on the frosted glass rod. An iron core, a wire coil and a heating rod are arranged in the degaussing box, the wire coil is wound on the iron core, a heat insulation plate is arranged between the wire coil and the heating rod, and a magnet electric connector is fixedly arranged on the bottom side face of the lower connecting end. The thermocouple wire can stably run in the vacuum tube for a long time, the reliability is high, the maintenance cost is reduced, the use efficiency of equipment is improved, the multiple demagnetization boxes are distributed on the thermocouple wire, a high-temperature and high-magnetism environment is formed in the vacuum tube, the purpose of eliminating internal magnetization is achieved, the detection accuracy is improved, whether magnetism exists or not is controlled at any time, and the service life of the equipment is prolonged. The normal use of the thermocouple wire is not affected, and the use flexibility is improved.

Description

Technical Field

[0001] The invention relates to a temperature measuring device, in particular to a multifunctional thermocouple wire temperature measuring device, belonging to the technical field of thermocouples. Background Art

[0002] Thermocouple temperature measuring device is mainly composed of thermocouple wire, insulating sleeve, protective tube, junction box and other parts. Among them, thermocouple wire is the core element of temperature measurement. It is composed of two conductors with different components such as nickel-chromium alloy and nickel-aluminum alloy. After they are connected into a circuit, thermoelectric potential is generated under temperature difference, thereby realizing temperature measurement.

[0003] Since thermocouples are composed of two different metals, they are easily disturbed by noise generated by stray electric and magnetic fields during the measurement process, especially when measuring millivolt signal changes. This noise may cause measurement errors. When thermocouples are used for a long time, they will be magnetized due to the influence of the surrounding environment, affecting the accuracy of temperature measurement. Moreover, these metals may corrode over time under certain working conditions, thereby reducing the accuracy of temperature measurement. Corrosion will not only affect the conductivity of the thermocouple, but may also change its thermoelectric properties, resulting in increased measurement errors.

[0004] Therefore, it is urgent to improve the thermocouple wire temperature measuring device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a multifunctional thermocouple wire temperature measuring device. The thermocouple wire can operate stably for a long time in a vacuum tube. The high reliability reduces maintenance costs and improves the utilization efficiency of the equipment. A plurality of demagnetization boxes are distributed on the thermocouple wire to form a high-temperature and high-magnetic environment inside the vacuum tube, thereby achieving the purpose of eliminating internal magnetization, improving the accuracy of detection, and controlling the presence or absence of magnetism at any time, which will not affect the normal use of the thermocouple wire and improve the flexibility of use.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A multifunctional thermocouple wire temperature measuring device, comprising a thermocouple wire arranged in a vacuum tube and a receiving end connected to the vacuum tube, wherein the thermocouple wire is fixedly arranged inside the vacuum tube, a lower connecting end is fixedly arranged at the upper end of the vacuum tube, the thermocouple wire passes through the lower connecting end and is connected to a semiconductor refrigeration coil, a cooling end contact corresponding to the thermocouple wire is arranged on the receiving end, and the thermocouple wire is electrically connected to the cooling end contact;

[0008] A frosted glass rod is connected between the two thermocouple wires through a thermocouple fixing block, a thermocouple mounting hole corresponding to the thermocouple wire is provided on the thermocouple fixing block, a magnesium oxide layer is fixedly arranged between the thermocouple wire and the thermocouple mounting hole, and a plurality of degaussing boxes are fixedly arranged on the frosted glass rod, and the degaussing boxes are arranged between the two thermocouple fixing blocks;

[0009] An iron core, a conductive coil and a heating rod are arranged inside the demagnetization box, the conductive coil is wound on the iron core, a heat insulation plate is arranged between the conductive coil and the heating rod, a ceramic protective ring is fixedly arranged on the outer side of the heating rod, an iron core mounting hole is opened in the middle of the iron core, the frosted glass rod is fixedly arranged inside the iron core mounting hole, a magnet electrical connector is fixedly arranged on the bottom side of the lower connecting end, and the conductive coil and the heating rod are both electrically connected to the magnet electrical connector.

[0010] Preferably, the thermocouple wire comprises a positive electrode and a negative electrode, the bottoms of the positive electrode and the negative electrode are twisted to form a twisted portion, a welding detection head is welded to the bottom of the twisted portion, a detection end is fixedly provided at the bottom of the vacuum tube, and the welding detection head is in contact with the detection end;

[0011] The outer sides of the positive electrode of the galvanic couple and the negative electrode of the galvanic couple are both wrapped with ceramic protection tubes.

[0012] Preferably, a glass rod mounting hole is opened in the middle of the thermocouple fixing block, the glass rod mounting hole is fixedly arranged on the frosted glass rod, and the interior of the magnesium oxide layer is filled with magnesium oxide powder;

[0013] The upper end of the frosted glass rod is connected with a heat dissipation bowl, and the heat dissipation bowl is arranged inside the lower connecting end.

[0014] Preferably, the demagnetization box is fixedly arranged at both ends of the iron core and the iron core mounting hole, the heat insulation board is wrapped around the conductor coil, and the interior of the iron core mounting hole is frosted.

[0015] Preferably, the upper end of the thermocouple wire passes through the lower connecting end and extends to the interior of the lower connecting end, and the semiconductor refrigeration coil is fixedly arranged at the upper end of the thermocouple wire. The semiconductor refrigeration coil includes a heat absorbing surface and a heat dissipating surface, wherein the heat absorbing surface is in contact with the thermocouple wire for absorbing heat from the thermocouple wire.

[0016] Preferably, a lower threaded joint is provided at the upper end of the lower connecting end, an upper connecting end is connected to the bottom of the receiving end, an upper threaded joint corresponding to the lower threaded joint is provided on the upper connecting end, and the upper threaded joint is connected to the lower threaded joint by threaded engagement;

[0017] A cooling end contact corresponding to the thermocouple wire is fixedly arranged inside the upper connecting end, a guide ramp is fixedly arranged on one side of the cooling end contact, a sealing ring groove is opened on the guide ramp, a sealing ring is slidably arranged inside the sealing ring groove, a spring is fixedly arranged at the bottom of the sealing ring and inside the sealing ring groove, a rubber sealing ring is fixedly arranged inside the sealing ring, the inner diameter of the rubber sealing ring is the same as the outer diameter of the semiconductor refrigeration ring, and the upper end of the thermocouple wire is rounded and protrudes from the semiconductor refrigeration ring.

[0018] Preferably, the receiving end is connected to a junction box at one end away from the vacuum tube, a receiving end connector is fixedly provided inside the junction box, the cooling end contact is electrically connected to the receiving end connector, a filter is fixedly provided inside the junction box, and the receiving end connector is electrically connected to the filter.

[0019] Preferably, a cooling mechanism is fixedly disposed inside the lower connecting end, and the cooling mechanism includes heat dissipation blades and a driving ring for driving the heat dissipation blades. A driving ring groove is provided on the outer side surface of the lower connecting end, and the driving ring is rotatably disposed inside the driving ring groove.

[0020] Preferably, the driving ring is connected to a driving plate via a driving plate connecting block, the driving plate is meshedly connected to a driving wheel, the driving wheel is rotatably arranged inside the lower connecting end, the bottom of the heat dissipating blade is connected to a blade driven wheel, the driving wheel is meshedly connected to the blade driven wheel, and the driving wheel is used to rotate the blade driven wheel;

[0021] A blade support frame is fixedly arranged inside the lower connecting end, and the heat dissipation blade is rotatably arranged on the blade support frame;

[0022] A driving plate groove is formed on the inner side surface of the lower connecting end, and the driving plate is slidably arranged inside the driving plate groove.

[0023] Preferably, a plurality of evenly distributed ventilation holes are provided on the upper connecting end, and a filter screen is fixedly arranged inside the ventilation holes.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. The conductive coil is wrapped around the iron core. After being connected to the external power supply through the magnet electrical connector, an electromagnet structure is formed. After the conductive coil is energized, the degaussing box generates a certain magnetic field. At the same time, after the heating rod is energized, the temperature of the degaussing box is increased. Multiple degaussing boxes are distributed on the thermocouple wire, forming a high-temperature and high-magnetic environment inside the vacuum tube. Therefore, the purpose of eliminating the internal magnetization is achieved under the high-temperature and high-magnetic environment, thereby improving the accuracy of detection. Moreover, the electromagnet formed by the conductive coil and the iron core can control the presence or absence of magnetism at any time. Therefore, when not in use, it will not affect the normal use of the thermocouple wire, thereby improving the flexibility of use.

[0026] 2. Therefore, a frosted glass rod is fixed inside the vacuum tube, and the thermocouple wire is fixed by a thermocouple fixing block on the frosted glass rod to reduce interference caused by mechanical vibration, improve detection accuracy, and effectively reduce detection errors caused by loosening of the thermocouple wire. The thermocouple wire can operate stably for a long time in the vacuum tube and is not prone to failure or damage. This high reliability reduces maintenance costs and improves the use efficiency of the equipment.

[0027] 3. When the driving ring rotates, the driving ring drives the driving plate to rotate through the driving plate connecting block. The driving plate drives the rotation of the driving wheel to drive the rotation of the blade follower wheel at the bottom of the heat dissipation blade, thereby achieving the purpose of rotating the heat dissipation blade. No additional power supply is needed. The heat inside the lower connecting end can be dissipated manually to achieve the purpose of cooling the cooling end. At the same time, the heat inside the vacuum tube can also be dissipated to cool the cold end, thereby improving the detection accuracy.

[0028] 4. As the degree of connection increases, the thermocouple wire moves from the guide ramp to the cooling end contact, squeezing the sealing ring during the movement, and the sealing ring slides into the inside of the sealing ring groove. When the thermocouple wire is aligned with the cooling end contact, the pressure on the upper end of the sealing ring disappears, and it rises and wraps around the thermocouple wire under the action of the spring. The rubber sealing ring wraps the semiconductor refrigeration ring, thereby achieving the purpose of wrapping the thermocouple wire, preventing the thermocouple wire from being exposed to the air, and improving the accuracy of thermocouple wire detection and the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 is a cross-sectional view of the present invention;

[0031] Figure 2 A perspective view of the present invention;

[0032] Figure 3It is a partial structural diagram of the present invention;

[0033] Figure 4 It is a structural diagram of a thermocouple fixing block of the present invention;

[0034] Figure 5 is a cross-sectional view of the lower connecting end of the present invention;

[0035] Figure 6 It is a structural diagram of the semiconductor refrigeration coil of the present invention;

[0036] Figure 7 A three-dimensional diagram of a receiving end of the present invention;

[0037] Figure 8 It is a structural diagram of the cooling mechanism of the present invention.

[0038] In the figure, 1, vacuum tube; 101, lower connecting end; 102, lower threaded joint; 103, driving ring groove; 104, driving plate groove; 105, detection end; 2, receiving end; 201, upper connecting end; 202, junction box; 203, vent hole; 204, upper threaded joint; 3, thermocouple wire; 301, twisted part; 302, welding detection head; 4, frosted glass rod; 401, thermocouple fixing block; 402, thermocouple mounting hole; 403, glass rod mounting hole; 404, magnesium oxide layer; 405, heat dissipation bowl; 5, demagnetization box; 501, iron core; 502, conductor coil; 503, heat insulation board ; 504, heating rod; 505, ceramic protective ring; 506, iron core mounting hole; 507, magnet electrical connector; 6, cooling end contact; 601, guide ramp; 602, receiving end connector; 603, sealing ring groove; 7, cooling mechanism; 701, heat dissipation blade; 702, drive ring; 703, drive plate; 704, drive wheel; 705, blade driven wheel; 706, blade support frame; 707, drive plate connecting block; 8, filter; 9, semiconductor refrigeration circle; 901, heat absorption surface; 902, heat dissipation surface; 10, sealing ring; 11, spring; 12, rubber sealing ring; 13, filter. DETAILED DESCRIPTION

[0039] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0040] like Figure 1-Figure 8As shown, the multifunctional thermocouple wire temperature measuring device provided in this embodiment includes a thermocouple wire 3 arranged in a vacuum tube 1 and a receiving end 2 connected to the vacuum tube 1. The thermocouple wire 3 is fixedly arranged inside the vacuum tube 1. The thermocouple wire 3 is arranged inside the vacuum tube 1, which can accurately reflect temperature changes and provide reliable temperature data support for experiments or industrial processes. In addition, in the vacuum tube 1, the environment is relatively pure, and the thermocouple wire 3 has good corrosion resistance to ensure long-term stable performance and is not affected by the external environment. The thermocouple wire 3 can operate stably for a long time in the vacuum tube 1 and is not prone to failure or damage. This high reliability reduces maintenance costs and improves the use efficiency of the equipment.

[0041] The detection process of the thermocouple wire 3 is susceptible to electromagnetic and mechanical vibration interference. The two thermocouple wires 3 are connected to a frosted glass rod 4 through a thermocouple fixing block 401. The thermocouple fixing block 401 is provided with a thermocouple mounting hole 402 corresponding to the thermocouple wire 3. A magnesium oxide layer 404 is fixedly arranged between the thermocouple wire 3 and the thermocouple mounting hole 402. A plurality of demagnetization boxes 5 are fixedly arranged on the frosted glass rod 4. The demagnetization box 5 is arranged between the two thermocouple fixing blocks 401. Therefore, a frosted glass rod 4 is fixedly arranged inside the vacuum tube 1. The thermocouple wire 3 is fixed by a thermocouple fixing block 401 on the frosted glass rod 4, thereby reducing interference caused by mechanical vibration and improving detection accuracy. In addition, a magnesium oxide layer 404 is provided between the thermocouple wire 3 and the thermocouple mounting hole 402, a glass rod mounting hole 403 is provided in the middle of the thermocouple fixing block 401, and the glass rod mounting hole 403 is fixedly arranged on the frosted glass rod 4. The interior of the magnesium oxide layer 404 is filled with magnesium oxide powder, thereby effectively reducing detection errors caused by loosening of the thermocouple wire 3.

[0042] During the use of the thermocouple wire 3, especially when measuring the change of millivolt level signal, it is easy to be disturbed by the noise generated by the stray electric field and magnetic field. At the same time, the thermocouple wire 3 will also be magnetized to different degrees, affecting the accuracy of temperature measurement. Therefore, it is necessary to demagnetize the thermocouple wire 3 regularly. The interior of the demagnetization box 5 is provided with an iron core 501, a wire coil 502 and a heating rod 504. The wire coil 502 is wound around the iron core 501. A heat insulation board 503 is arranged between the wire coil 502 and the heating rod 504. A ceramic protective ring 505 is fixedly arranged on the outer side of the heating rod 504. An iron core mounting hole 506 is opened in the middle of the iron core 501. The frosted glass rod 4 is fixedly arranged inside the iron core mounting hole 506. The demagnetization box 5 is fixedly arranged at both ends of the iron core 501 and the iron core mounting hole 506. The heat insulation board 503 is wrapped around the wire coil 502. The interior of the iron core mounting hole 506 is frosted. The demagnetization box 5 can increase the contact area and improve the stability of the demagnetization box 5. A magnet electrical connector 507 is fixedly arranged on the bottom side of the lower connecting end 101. The conductive coil 502 and the heating rod 504 are both electrically connected to the magnet electrical connector 507. The conductive coil 502 is wrapped on the iron core 501. After being connected to an external power source through the magnet electrical connector 507, an electromagnet structure is formed. After the conductive coil 502 is energized, the demagnetization box 5 generates a certain magnetic field. At the same time, after the heating rod 504 is energized, the temperature of the demagnetization box 5 is increased. Multiple demagnetization boxes 5 are distributed on the thermocouple wire 3, and a high-temperature and high-magnetic environment is formed inside the vacuum tube 1. Therefore, the purpose of eliminating the internal magnetization is achieved under the high-temperature and high-magnetic environment, thereby improving the accuracy of detection. Moreover, the electromagnet formed by the conductive coil 502 and the iron core 501 can control the presence or absence of magnetism at any time. Therefore, when not in use, it will not affect the normal use of the thermocouple wire 3, thereby improving the flexibility of use.

[0043] While improving the stability of the thermocouple wire 3, the thermocouple wire 3 is fixed by a frosted glass rod 4. The thermocouple wire 3 includes a positive electrode and a negative electrode. The bottoms of the positive electrode and the negative electrode are twisted to form a twisted portion 301. The bottom of the thermocouple wire 3 is tightly twisted to reduce the electromagnetic coupling between the thermocouple wires 3 and reduce the interference of stray electric and magnetic fields on the measurement signal, which helps to improve the anti-interference ability of the measurement and ensure the accuracy of the measurement result. The twisted portion 301 is in close contact, which helps to improve the temperature distribution between the thermocouple wires, which can reduce the measurement error caused by the temperature gradient and improve the measurement accuracy. The bottom of the twisted portion 301 A welding detection head 302 is welded on the bottom of the vacuum tube 1, and a detection end 105 is fixedly arranged on the bottom of the vacuum tube 1. The welding detection head 302 contacts the detection end 105, and the detection end 105 transfers the temperature to the welding detection head 302 by heat conduction. The welding detection head 302 is arranged inside the vacuum tube 1, so that the purpose of detection can be achieved, and the oxidation phenomenon caused by the welding detection head 302 being exposed to the air can be reduced, thereby improving the service life of the thermocouple wire 3. In addition, the outer sides of the positive electrode and the negative electrode of the thermocouple are wrapped with a ceramic protection tube, which is used to protect the thermocouple from environmental corrosion and mechanical damage, thereby ensuring the stability and reliability of the thermocouple.

[0044] Thermocouples measure temperature based on the thermoelectric effect, and their measurement results are affected by the cold end temperature. A lower connecting end 101 is fixedly provided at the upper end of the vacuum tube 1. The thermocouple wire 3 passes through the lower connecting end 101 and is connected to a semiconductor refrigeration coil 9. A cooling end contact 6 corresponding to the thermocouple wire 3 is provided on the receiving end 2. The thermocouple wire 3 is electrically connected to the cooling end contact 6. Therefore, during the measurement process, it is necessary to keep the cold end temperature stable or compensate for the cold end temperature to ensure the accuracy of the measurement result. In some environments, such as high temperature or large temperature change environments, the cold end may be affected by the environment. The temperature rises due to the influence of ambient heat, which will cause deviations in the measurement results of the thermocouple. In order to eliminate this influence, the cold end needs to be cooled. Therefore, the heat on the thermocouple wire 3 can be dissipated through the semiconductor refrigeration coil 9 to improve the accuracy of the detection. The upper end of the frosted glass rod 4 is connected to a heat dissipation bowl 405, which is arranged inside the lower connecting end 101. The heat on the frosted glass rod 4 can be directly transferred to the inside of the lower connecting end 101 through the heat dissipation bowl 405 in the form of heat transfer, and the heat is dissipated through the cooling mechanism 7 inside the lower connecting end 101. Specifically:

[0045] A cooling mechanism 7 is fixedly arranged inside the lower connecting end 101, and the cooling mechanism 7 includes a heat dissipation blade 701 and a driving ring 702 for driving the heat dissipation blade 701. The heat dissipation blade 701 is driven to rotate by rotating the driving ring 702 on the lower connecting end 101. When the heat dissipation blade 701 rotates, the flow rate of the air inside the lower connecting end 101 is accelerated. By means of heat convection, the heat dissipation of the thermocouple wire 3 is accelerated to prepare for the next operation. A driving ring groove 103 is provided on the outer side surface of the lower connecting end 101. The driving ring 702 is rotatably arranged inside the driving ring groove 103. The driving ring 702 is connected to the driving plate 703 through a driving plate connecting block 707. The driving plate 703 is meshedly connected with a driving wheel 704. The driving wheel 704 is rotatably arranged inside the lower connecting end 101. A blade driven wheel 705 is connected to the bottom of the heat dissipation blade 701. The driving wheel 704 is meshedly connected with the blade driven wheel 705. The driving wheel 704 is used to rotate the blade driven wheel 705. 2 is rotatably arranged inside the driving ring groove 103, and a driving plate groove 104 is provided on the inner side of the lower connecting end 101, and the driving plate 703 is slidably arranged inside the driving plate groove 104. When the driving ring 702 rotates, the driving ring 702 drives the driving plate 703 to rotate through the driving plate connecting block 707, and the driving plate 703 drives the rotation of the blade driven wheel 705 at the bottom of the heat dissipation blade 701 by driving the rotation of the driving wheel 704, thereby achieving the purpose of rotating the heat dissipation blade 701, without using an additional power supply, and the heat inside the lower connecting end 101 can be manually dissipated to achieve the purpose of cooling the cooling end, and the heat inside the vacuum tube 1 can also be dissipated to improve the detection accuracy, and a blade support frame 706 is fixedly arranged inside the lower connecting end 101, and the heat dissipation blade 701 is rotatably arranged on the blade support frame 706, and the heat dissipation blade 701 is fixedly arranged inside the lower connecting end 101 through the blade support frame 706, so as to improve the stability of the heat dissipation blade 701;

[0046] In addition, in order to achieve the purpose of cooling the thermocouple wire 3, the upper end of the thermocouple wire 3 passes through the lower connecting end 101 and extends to the inside of the lower connecting end 101, and the semiconductor refrigeration coil 9 is fixedly arranged at the upper end of the thermocouple wire 3. The semiconductor refrigeration coil 9 includes a heat absorption surface 901 and a heat dissipation surface 902, wherein the heat absorption surface 901 contacts the thermocouple wire 3 and is used to absorb the heat on the thermocouple wire 3. The semiconductor refrigeration coil 9 is fixedly arranged at the upper end of the thermocouple wire 3, and the heat absorption surface 901 on the semiconductor refrigeration coil 9 contacts the thermocouple wire 3, so the heat absorption surface 901 can absorb the heat on the thermocouple wire 3 and dissipate it to the inside of the lower connecting end 101 through the heat dissipation surface 902, and under the action of the cooling mechanism 7, the purpose of quickly cooling the thermocouple wire 3 is achieved;

[0047] In order to balance the air pressure inside the lower connecting end 101, that is, the flow of air, a plurality of evenly distributed vents 203 are provided on the upper connecting end 201, and a filter 13 is fixedly installed inside the vents 203. Vents 203 connected to the interior of the lower connecting end 101 are provided on the receiving end 2 to facilitate air flow and achieve the purpose of heat dissipation.

[0048] Further, such as Figure 1 , Figure 5 as well as Figure 7 As shown, a lower threaded joint 102 is provided at the upper end of the lower connecting end 101, an upper connecting end 201 is connected to the bottom of the receiving end 2, an upper threaded joint 204 corresponding to the lower threaded joint 102 is provided on the upper connecting end 201, the upper threaded joint 204 is connected to the lower threaded joint 102 by threaded engagement, and the lower connecting end 101 is connected to the upper connecting end 201 on the receiving end 2 by threaded engagement through the lower threaded joint 102, which is convenient for installation and for maintenance and care of the components inside the lower connecting end 101;

[0049] The upper connecting end 201 is connected to the outside air through the vent hole 203. Therefore, in order to ensure that the thermocouple wire 3 will not be exposed to the air, a cooling end contact 6 corresponding to the thermocouple wire 3 is fixedly arranged inside the upper connecting end 201. A cooling end contact 6 electrically connected to the thermocouple wire 3 is fixedly arranged inside the upper connecting end 201. A guide inclined plate 601 is fixedly arranged on one side of the cooling end contact 6. A sealing ring groove 603 is opened on the guide inclined plate 601. A sealing ring 10 is slidingly arranged inside the sealing ring groove 603. A spring 11 is fixedly arranged at the bottom of the sealing ring 10 and inside the sealing ring groove 603. The guide inclined plate 601 corresponds to the thermocouple wire 3. When the lower connecting end 101 and the upper connecting end 201 begin to be screwed together, the thermocouple wire 3 does not contact the cooling end contact 6. As the degree of connection increases, the thermocouple wire 3 moves from the guide inclined plate 601. The inclined plate 601 moves to the cooling end contact 6, and squeezes the sealing ring 10 during the movement. The sealing ring 10 slides into the inside of the sealing ring groove 603. When the thermocouple wire 3 is aligned with the cooling end contact 6, the pressure on the upper end of the sealing ring 10 disappears, and under the action of the spring 11, it rises and wraps around the thermocouple wire 3. A rubber sealing ring 12 is fixedly arranged inside the sealing ring 10. The inner diameter of the rubber sealing ring 12 is the same as the outer diameter of the semiconductor refrigeration ring 9. The upper end of the thermocouple wire 3 is rounded and protrudes from the semiconductor refrigeration ring 9. The inner diameter of the rubber sealing ring 12 is the same as the outer diameter of the semiconductor refrigeration ring 9. Therefore, after the sealing ring 10 rises, the rubber sealing ring 12 wraps the semiconductor refrigeration ring 9, thereby achieving the purpose of wrapping the thermocouple wire 3, preventing the thermocouple wire 3 from being exposed to the air, and improving the detection accuracy and service life of the thermocouple wire 3.

[0050] Furthermore, in this embodiment, if Figure 1and Figure 2 As shown, the end of the receiving end 2 away from the vacuum tube 1 is connected to a junction box 202, a receiving end connector 602 is fixedly provided inside the junction box 202, the cooling end contact 6 is electrically connected to the receiving end connector 602, a filter 8 is fixedly provided inside the junction box 202, the receiving end connector 602 is electrically connected to the filter 8, the cooling end contact 6 is electrically connected to the receiving end connector 602, and a filter 8 electrically connected to the receiving end connector 602 is provided inside the junction box 202, and the filter 8 is used to remove high-frequency electromagnetic noise to ensure the accuracy of the measurement signal.

[0051] like Figure 1-Figure 8 As shown, the principle of the multifunctional thermocouple wire temperature measuring device provided in this embodiment is as follows:

[0052] During the use of the thermocouple wire 3, especially when measuring the change of millivolt level signal, it is easy to be disturbed by the noise generated by the stray electric field and magnetic field. At the same time, the thermocouple wire 3 will be magnetized to different degrees, affecting the accuracy of temperature measurement. Therefore, it is necessary to demagnetize the thermocouple wire 3 regularly. The frosted glass rod 4 and the demagnetization box 5 can increase the contact area and improve the stability of the demagnetization box 5 after frosting treatment. The conductive wire 502 is wrapped on the iron core 501, and after being connected to the external power supply through the magnet electrical connector 507, an electromagnet structure is formed. After the coil 502 is energized, the degaussing box 5 generates a certain magnetic field. At the same time, after the heating rod 504 is energized, the temperature of the degaussing box 5 is increased. A plurality of degaussing boxes 5 are distributed on the thermocouple wire 3, and a high-temperature and high-magnetic environment is formed inside the vacuum tube 1. Therefore, the purpose of eliminating the internal magnetization is achieved under the high-temperature and high-magnetic environment, and the accuracy of the detection is improved. Moreover, the electromagnet formed by the conductive coil 502 and the iron core 501 can control the presence or absence of magnetism at any time. Therefore, when not in use, it does not affect the normal use of the thermocouple wire 3, and the flexibility of use is improved.

[0053] The cold end may be affected by the ambient heat and the temperature may rise, which may cause deviations in the measurement results of the thermocouple. In order to eliminate this influence, the cold end needs to be cooled. Therefore, the heat on the thermocouple wire 3 can be dissipated through the semiconductor refrigeration coil 9 to improve the accuracy of the detection. The heat dissipation blade 701 is driven to rotate by rotating the drive ring 702 on the lower connecting end 101. When the heat dissipation blade 701 rotates, the flow rate of the air inside the lower connecting end 101 is accelerated. By means of thermal convection, the heat dissipation of the thermocouple wire 3 is accelerated to prepare for the next operation. The drive ring 702 is rotatably arranged inside the drive ring groove 103. A driving plate groove 104 is provided on the inner side surface of the connecting end 101, and the driving plate 703 is slidably arranged inside the driving plate groove 104. When the driving ring 702 rotates, the driving ring 702 drives the driving plate 703 to rotate through the driving plate connecting block 707. The driving plate 703 drives the rotation of the driving wheel 704 to drive the rotation of the blade driven wheel 705 at the bottom of the heat dissipation blade 701, thereby achieving the purpose of rotating the heat dissipation blade 701. There is no need to use an additional power supply. The heat inside the lower connecting end 101 can be dissipated manually to achieve the purpose of cooling the cooling end. At the same time, the heat inside the vacuum tube 1 can also be dissipated to improve the detection accuracy.

[0054] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0055] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0056] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A multifunctional thermocouple wire temperature measuring device, comprising a thermocouple wire (3) arranged in a vacuum tube (1) and a receiving end (2) connected to the vacuum tube (1), characterized in that: The thermocouple wire (3) is fixedly arranged inside the vacuum tube (1); a lower connecting end (101) is fixedly arranged at the upper end of the vacuum tube (1); the thermocouple wire (3) passes through the lower connecting end (101) and is connected to a semiconductor refrigeration coil (9); a cooling end contact (6) corresponding to the thermocouple wire (3) is arranged on the receiving end (2); the thermocouple wire (3) is electrically connected to the cooling end contact (6); A ground glass rod (4) is connected between the two thermocouple wires (3) via a thermocouple fixing block (401); a thermocouple mounting hole (402) corresponding to the thermocouple wire (3) is provided on the thermocouple fixing block (401); a magnesium oxide layer (404) is fixedly provided between the thermocouple wire (3) and the thermocouple mounting hole (402); a plurality of demagnetization boxes (5) are fixedly provided on the ground glass rod (4); and the demagnetization boxes (5) are provided between the two thermocouple fixing blocks (401); An iron core (501), a conducting coil (502) and a heating rod (504) are arranged inside the demagnetization box (5); the conducting coil (502) is wound around the iron core (501); a heat insulation plate (503) is arranged between the conducting coil (502) and the heating rod (504); a ceramic protective ring (505) is fixedly arranged on the outer side of the heating rod (504); an iron core mounting hole (506) is opened in the middle of the iron core (501); the frosted glass rod (4) is fixedly arranged inside the iron core mounting hole (506); a magnet electrical connector (507) is fixedly arranged on the bottom side of the lower connecting end (101); the conducting coil (502) and the heating rod (504) are both electrically connected to the magnet electrical connector (507).

2. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: The thermocouple wire (3) comprises a positive electrode and a negative electrode, the bottoms of the positive electrode and the negative electrode are twisted together to form a twisted portion (301), a welding detection head (302) is welded to the bottom of the twisted portion (301), a detection end (105) is fixedly provided at the bottom of the vacuum tube (1), and the welding detection head (302) is in contact with the detection end (105); The outer sides of the positive electrode of the galvanic couple and the negative electrode of the galvanic couple are both wrapped with ceramic protection tubes.

3. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: A glass rod mounting hole (403) is provided in the middle of the thermocouple fixing block (401), the glass rod mounting hole (403) is fixedly arranged on the frosted glass rod (4), and the interior of the magnesium oxide layer (404) is filled with magnesium oxide powder; The upper end of the frosted glass rod (4) is connected to a heat dissipation bowl (405), and the heat dissipation bowl (405) is arranged inside the lower connecting end (101).

4. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: The demagnetization box (5) is fixedly arranged at both ends of the iron core (501) and the iron core mounting hole (506), the heat insulation board (503) is wrapped around the conductor coil (502), and the interior of the iron core mounting hole (506) is frosted.

5. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: The upper end of the thermocouple wire (3) passes through the lower connecting end (101) and extends into the interior of the lower connecting end (101); the semiconductor refrigeration coil (9) is fixedly arranged at the upper end of the thermocouple wire (3); the semiconductor refrigeration coil (9) comprises a heat absorbing surface (901) and a heat dissipating surface (902); wherein the heat absorbing surface (901) is in contact with the thermocouple wire (3) and is used to absorb heat from the thermocouple wire (3).

6. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: The upper end of the lower connecting end (101) is provided with a lower threaded joint (102), the bottom of the receiving end (2) is connected with an upper connecting end (201), the upper connecting end (201) is provided with an upper threaded joint (204) corresponding to the lower threaded joint (102), and the upper threaded joint (204) is connected to the lower threaded joint (102) by screwing; A cooling end contact (6) corresponding to the thermocouple wire (3) is fixedly arranged inside the upper connecting end (201), a guide inclined plate (601) is fixedly arranged on one side of the cooling end contact (6), a sealing ring groove (603) is opened on the guide inclined plate (601), a sealing ring (10) is slidably arranged inside the sealing ring groove (603), a spring (11) is fixedly arranged at the bottom of the sealing ring (10) and inside the sealing ring groove (603), a rubber sealing ring (12) is fixedly arranged inside the sealing ring (10), the inner diameter of the rubber sealing ring (12) is the same as the outer diameter of the semiconductor refrigeration coil (9), and the upper end of the thermocouple wire (3) is rounded and protrudes from the semiconductor refrigeration coil (9).

7. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: An end of the receiving end (2) away from the vacuum tube (1) is connected to a junction box (202), a receiving end connector (602) is fixedly arranged inside the junction box (202), the cooling end contact (6) is electrically connected to the receiving end connector (602), a filter (8) is fixedly arranged inside the junction box (202), and the receiving end connector (602) is electrically connected to the filter (8).

8. The multifunctional thermocouple wire temperature measuring device according to claim 1, characterized in that: A cooling mechanism (7) is fixedly arranged inside the lower connecting end (101), the cooling mechanism (7) comprising heat dissipation blades (701) and a driving ring (702) for driving the heat dissipation blades (701), a driving ring groove (103) is provided on the outer side surface of the lower connecting end (101), and the driving ring (702) is rotatably arranged inside the driving ring groove (103).

9. The multifunctional thermocouple wire temperature measuring device according to claim 8, characterized in that: The driving ring (702) is connected to a driving plate (703) via a driving plate connecting block (707); the driving plate (703) is meshingly connected to a driving wheel (704); the driving wheel (704) is rotatably arranged inside the lower connecting end (101); a blade driven wheel (705) is connected to the bottom of the heat dissipating blade (701); the driving wheel (704) is meshingly connected to the blade driven wheel (705); and the driving wheel (704) is used to rotate the blade driven wheel (705); A blade support frame (706) is fixedly arranged inside the lower connecting end (101), and the heat dissipation blade (701) is rotatably arranged on the blade support frame (706); A driving plate groove (104) is provided on the inner side surface of the lower connecting end (101), and the driving plate (703) is slidably arranged inside the driving plate groove (104).

10. The multifunctional thermocouple wire temperature measuring device according to claim 6, characterized in that: The upper connecting end (201) is provided with a plurality of evenly distributed ventilation holes (203), and a filter screen (13) is fixedly arranged inside the ventilation hole (203).

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