CN113465758A - Temperature measuring device and temperature measuring system - Google Patents
Temperature measuring device and temperature measuring system Download PDFInfo
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- CN113465758A CN113465758A CN202110684172.5A CN202110684172A CN113465758A CN 113465758 A CN113465758 A CN 113465758A CN 202110684172 A CN202110684172 A CN 202110684172A CN 113465758 A CN113465758 A CN 113465758A
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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
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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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
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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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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Abstract
The embodiment of the invention discloses a temperature measuring device and a temperature measuring system, wherein the temperature measuring device comprises: a metal housing forming a chamber; at least one temperature measuring piece, which is arranged in the cavity; and one end of the wire is connected with the metal shell, and the other end of the wire is grounded so as to lead out the charges generated by the metal shell. According to the temperature measuring device and the temperature measuring system provided by the embodiment of the invention, the accuracy of temperature measurement in an electromagnetic field environment can be improved.
Description
Technical Field
The invention relates to the technical field of measuring instruments, in particular to a temperature measuring device and a temperature measuring system.
Background
With the rapid development of the nuclear industry, how to treat a large amount of radioactive waste generated in the nuclear industry is an urgent problem to be solved, and the solidification treatment is a method capable of treating the radioactive waste more safely and efficiently.
The solidification refers to the selection of a solidification matrix with higher stability to contain the nuclide for a long time, and common solidification methods include glass solidification, ceramic solidification, glass ceramic solidification, artificial rock solidification, various cement solidification and the like. The glass curing technology is mature, and the glass curing body has the advantages of low leaching rate, stable irradiation and the like, so that the glass curing technology becomes a hotspot of curing technology research.
The glass solidification is that the high-level radioactive waste liquid and a glass substrate are mixed according to a certain proportion, calcined, melted and cast at high temperature, and then are converted into a stable glass solidified body after annealing. Phosphate glass curing, in which phosphoric acid, phosphate or other phosphorus-containing substances are used as glass formers, and borosilicate glass curing, in which silica and boron trioxide are used as glass formers.
The research on glass solidification begins at the end of the 50 th 20 th century, phosphate glass solidification is studied more in the early stage, and then the phosphate glass solidified body is found to form crystals after being stored for a period of time, the transparency is lost, the leaching rate of radioactive nuclide is obviously increased, the phosphoric acid is strong in corrosivity, and a melter and a solidification tail gas pipeline need to use platinum as materials. The focus of research work has thus turned to borosilicate glass curing. The research result proves that the borosilicate glass is a more ideal high-level liquid waste curing substrate.
So far, glass solidification has been developed for 4 generations, and the 1 st generation melting process is an induction heating metal melting furnace, a one-step pot process. The pot-type process is characterized in that evaporation concentrated solution of high-level radioactive waste liquid and a glass forming agent are simultaneously and respectively added into a metal pot, the metal pot is heated by medium-frequency induction and is divided into a plurality of zones, the waste liquid is evaporated in the pot, is melted and clarified together with the glass forming agent, and finally, the melted glass is discharged from a freeze-thaw valve at the lower end.
The 2 nd generation melting process is a two-step process of a rotary calcining path and an induction heating metal melting furnace, which is a process developed on a tank type process, wherein in the 1 st step, high-level waste liquid is calcined in a rotary calcining furnace to form solid calcined substances, in the 2 nd step, the calcined substances and a glass forming agent are respectively added into a medium-frequency induction heating metal melting furnace, and are melted and cast into glass, and finally the glass is injected into a glass storage tank through a freeze-thaw valve. The process has the advantages of continuous production, large treatment capacity and complex process and short service life of the smelting furnace.
The 3 rd generation melting process is a joule heating ceramic furnace process, which was originally developed by the north-west laboratories of the pacific united states of america (electric melting furnace for short), and the joule heating ceramic furnace is heated by electrodes, and the furnace body is made of refractory ceramic materials. The high level radioactive waste liquid and the glass forming agent are respectively added into a melting furnace, and the high level radioactive waste liquid is evaporated in the melting furnace and is melted and cast into glass together with the glass forming agent. The melted glass is discharged from a bottom freeze-thaw valve or an overflow port in a batch or continuous manner. The joule heating ceramic furnace has the disadvantages of large process throughput, long service life (about 5 years), large volume of the furnace, difficulty in decommissioning, and possibility of deposition of precious metals at the bottom of the furnace, thereby affecting discharge.
The 4 th generation melting process is a cold crucible induction furnace process. The cold crucible is heated by high-frequency induction, the outer wall of the furnace body is provided with a water-cooling sleeve and a high-frequency induction coil, and refractory materials and electrodes are not needed for heating. High frequency (100-. The cold crucible can be used for melting waste metal, processing spent fuel cladding, burning high-chlorine high-sulfur waste plastic and waste resin and the like besides casting glass.
The cold crucible furnace has the advantages of high melting temperature, more objects to be treated, no direct contact between the molten glass and metal, low corrosivity, long service life of the furnace body and simple tail gas treatment. Based on this, the cold crucible technology is a hot spot technology of intensive research in China and even all over the world.
When the cold crucible furnace is used for glass solidification, a thermocouple is usually selected to measure the temperature of the radioactive molten material in the cold crucible, and in order to ensure the service strength and the service life of the thermocouple, the thermocouple needs to be arranged in a proper protective shell. Because the cold crucible uses the electromagnetic field to heat, the metal armored thermocouple may cause inaccurate temperature measurement result when being applied in the cold crucible, and the armored thermocouples made of other materials are difficult to meet the requirements of use strength and service life.
Disclosure of Invention
In view of the above, the present invention has been made to provide a thermometric device and a thermometric system that overcome or at least partially solve the above problems.
According to an aspect of an embodiment of the present invention, there is provided a temperature measuring apparatus including: a metal housing forming a chamber; at least one temperature measuring piece, which is arranged in the cavity; and one end of the wire is connected with the metal shell, and the other end of the wire is grounded so as to lead out the charges generated by the metal shell.
Optionally, the connection point of the lead to the metal housing is located within the chamber.
Optionally, each temperature measuring part comprises a first temperature measuring body and a second temperature measuring body, and one end of the first temperature measuring body and one end of the second temperature measuring body are connected to form a temperature measuring end of the temperature measuring part; the first temperature measuring body and the second temperature measuring body are made of different materials, so that the electromotive force of the first temperature measuring body is higher than that of the second temperature measuring body when the temperature measuring end measures the temperature.
Optionally, the chamber is provided in a tubular shape; when the temperature measuring parts are multiple, the temperature measuring ends of the temperature measuring parts are arranged at different positions in the cavity along the axial direction of the cavity.
Optionally, one end of at least part of the second temperature measuring body away from the temperature measuring end is grounded.
Optionally, one end of the second temperature measuring body, which is far away from the temperature measuring end, is connected with the lead to realize grounding.
Optionally, the connection point of the lead and the second temperature measuring body is located within the cavity.
Optionally, when a plurality of the second temperature measuring bodies are connected with the lead, the plurality of the second temperature measuring bodies are connected at different positions of the lead
Optionally, the temperature measuring device further includes: a filler disposed within the chamber to insulate the at least one thermometric element from the metal housing.
Optionally, the filler comprises at least one of: alumina powder, beryllium oxide powder.
Optionally, the temperature measuring device operates in a magnetic field environment, and the metal shell generates the electric charge through electromagnetic induction.
According to another aspect of the embodiments of the present invention, there is provided a temperature measurement system including: temperature measuring device and first grounding body, temperature measuring device includes: a metal housing forming a chamber; the temperature measuring piece is arranged in the cavity and used for measuring temperature; one end of the lead is connected with the metal shell, and the other end of the lead is grounded so as to lead out the charges generated by the metal shell; the first grounding body is used for being connected with the other end of the wire so as to ground the other end of the wire.
Optionally, the first ground body is provided to be connected only to the wire.
Optionally, each temperature measuring part comprises a first temperature measuring body and a second temperature measuring body, and one end of the first temperature measuring body and one end of the second temperature measuring body are connected to form a temperature measuring end of the temperature measuring part; the first temperature measuring body and the second temperature measuring body are made of different materials, so that the electromotive force of the first temperature measuring body is higher than that of the second temperature measuring body when the temperature measuring end measures the temperature.
Optionally, the thermometry system further comprises: the second grounding body is used for being connected with at least part of the second temperature measuring bodies of the temperature measuring pieces so as to ground the at least part of the second temperature measuring bodies of the temperature measuring pieces, and the second grounding body is connected to one end, far away from the temperature measuring end, of the second temperature measuring bodies.
Optionally, each of the second ground bodies is arranged to be connected to only one of the second temperature sensing bodies.
According to the temperature measuring device and the temperature measuring system provided by the embodiment of the invention, the accuracy of temperature measurement in an electromagnetic field environment can be improved.
Drawings
FIG. 1 is a schematic diagram of a temperature measurement device and temperature measurement system according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a temperature measuring device and a temperature measuring system according to another embodiment of the present invention;
FIG. 3 is a schematic view of a plurality of temperature measuring members according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a grounding mode of a second temperature measuring body of a plurality of temperature measuring parts according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a grounding mode of a second temperature measuring body of a plurality of temperature measuring parts according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
According to an embodiment of the present invention, there is provided a temperature measuring device, referring to fig. 1 to 5, including: a metal housing 10, the metal housing 10 forming a chamber 11; at least one temperature measuring piece 20, wherein the at least one temperature measuring piece 20 is arranged in the cavity 11; and a lead 30, one end of the lead 30 is connected with the metal shell 10, and the other end is grounded to lead out the electric charge generated by the metal shell 10.
The metal housing 10 may be made of any suitable metal material, such as copper, aluminum, iron, stainless steel, alloy, etc., and those skilled in the art can select a suitable metal material according to the actual temperature measurement requirement of the temperature measurement device, which is not limited in this respect. Although the metal shell 10 and the chamber 11 are shown as being tubular, the chamber 11 formed by the metal shell 10 may be of any shape, such as cubic, spherical, irregular, etc. In some embodiments, the cavity 11 may have a shape that conforms to the at least one thermometric element 20. In some embodiments, the shape of the chamber 11 may be such that a plurality of thermometers 20 are arranged in a suitable manner to enable simultaneous measurement of the temperature at a plurality of different locations. In some embodiments, the shape of the chamber 11 may be different from the outer shape of the metal housing 10. The design of the metal shell 10 and the cavity 11 can be performed by those skilled in the art according to practical requirements, and is not particularly limited. The metal shell 10 can protect at least one temperature measuring part 20, and meanwhile, the metal shell 10 can be processed into a proper shape and size more conveniently due to the good processability of the metal material, so that the temperature measuring requirement can be met.
The at least one temperature measuring member 20 may be a temperature measuring member such as a temperature measuring sensor, a thermocouple, etc., and those skilled in the art can set the type and number of the temperature measuring members 20 according to the actual temperature measuring requirement. In some embodiments, the plurality of temperature measurement members 20 are the same type of temperature measurement member, and in some embodiments, the plurality of temperature measurement members 20 may also be different types of temperature measurement members, for example, some of the temperature measurement members 20 may be temperature measurement sensors, some of the temperature measurement members may be thermocouples, and so on.
At least one temperature sensing member 20 can be secured within lumen 11 by any suitable means, and in some embodiments, temperature sensing member 20 can be secured to lumen 11 by providing a suitable fastener.
The inventor of the present application has found that in some usage scenarios, the metal housing 10 may generate electric charges, for example, the metal housing 10 may operate in a magnetic field environment, so that induced electric charges are generated due to magnetic induction, and for example, the metal housing 10 rubs with other components during the temperature measurement process of the temperature measurement device to generate electric charges. After the charges generated by the metal shell 10 are accumulated, the accuracy of temperature measurement of the temperature measuring member 20 may be affected, and especially when the temperature measuring member 20 is a thermocouple, the induced charges may affect the electromotive force generated when the temperature measuring member 20 measures the temperature, resulting in a large error in the temperature measurement result. Therefore, the temperature measuring device according to the embodiment of the invention is provided with the conducting wire 30, as shown in fig. 1, one end of the conducting wire 30 is connected with the metal shell 10, and the other end is grounded, so that the electric charge generated by the metal shell 10 is led out, and the influence on the accuracy of the measuring result of the temperature measuring part 20 after the electric charge is accumulated is avoided.
The wire 30 may be made of any suitable conductive material, which is not particularly limited. When one end of the wire 30 is connected to the metal shell 10, the connection point may be disposed at any suitable position, for example, at the inner or outer surface of the metal shell 10, at the upper or lower end of the metal shell 10, etc., as long as the wire 30 can be effectively electrically connected to the metal shell 10. The other end of the wire 30 is grounded, so that the wire 30 can conduct the electric charge of the metal shell 10 to avoid the electric charge from accumulating on the metal shell 10, and likewise, the wire 30 may be grounded in any suitable manner, such as being connected to a grounding pile, a grounding system, etc., and those skilled in the art can select a suitable grounding manner according to practical situations.
In some embodiments, the wires 30 are configured to be grounded individually, specifically, the grounded individually means that when the wires 30 are grounded by a grounding component such as a grounding peg, the grounding component is only used for grounding the wires 30, and does not provide grounding for other components, so that the wires 30 obtain a better grounding effect, and the accuracy of the measurement result is further improved.
In some embodiments, since the outer surface of the metal shell 10 is exposed to the temperature measuring environment, the connection point of the lead 30 and the metal shell 10 can be optionally disposed in the cavity 11, so as to better protect the lead 30, and in such embodiments, the lead 30 can leave the cavity 11 at a suitable position and be connected to a grounding pile, a grounding system, or the like, so as to achieve grounding. In some embodiments, the wire 30 may pass out of the cavity 11 at a side away from the temperature measuring end of the temperature measuring member 20, as shown in fig. 1, the wire 30 exits the cavity 11 at the upper end of the metal shell 10, and specifically, the upper end of the metal shell 10 may be provided with an opening through which the wire 30 may exit the cavity 11 to the outside of the metal shell 10. In some embodiments, the temperature measuring member 20 may have a temperature measuring end and a terminal, and the terminal needs to leave the cavity 11 to reach the outside of the metal shell 10 to transmit the temperature measuring information of the temperature measuring member 20, in such embodiments, the conducting wire 30 may leave the cavity 11 together with the terminal of the temperature measuring member 20, for example, the conducting wire 30 may leave the cavity 11 through the same opening as the terminal of the temperature measuring member 20. In some embodiments, the conducting wire 30 and the terminal of the temperature measuring member 20 can leave the cavity 11 through different openings, so as to avoid the current of the conducting wire 30 from influencing the current on the terminal of the temperature measuring member 20, and thus, the temperature measuring result is prevented from being in error.
In some embodiments, as mentioned in the foregoing, at least one of the thermometric members 20 may be a thermocouple, and in particular, referring to fig. 1 to 5, each thermometric member 20 includes a first thermometric body 21 and a second thermometric body 22, one end of the first thermometric body 21 is connected with one end of the second thermometric body 22 to form a thermometric end 23 of the thermometric member 20, and the first thermometric body 21 and the second thermometric body 22 are made of different materials, so that when the thermometric end 23 performs thermometry, the electromotive force of the first thermometric body 21 is higher than that of the second thermometric body 22. In such an embodiment, the temperature measurement result can be obtained by obtaining the current intensity at the other end of the first temperature measuring body 21 and the other end of the second temperature measuring body 22, and a person skilled in the art can select an appropriate material to manufacture the first temperature measuring body 21 and the second temperature measuring body 22 according to the actual temperature measurement requirement, which is not limited specifically.
In some embodiments, referring to fig. 3 to 5, the chamber 11 is disposed in a tubular shape, and when a plurality of thermometric members 20 are disposed in the chamber 11, the thermometric sections 23 of the plurality of thermometric members 20 are disposed at different positions in the chamber in the axial direction of the chamber 11, so that the plurality of thermometric members 20 can measure the temperature at the different positions, respectively, and the thermometric efficiency is improved.
In some embodiments, the temperature measuring ends 23 of the temperature measuring members 20 may be disposed at substantially the same position, for example, in the same plane of the chamber 11, or at least some of the temperature measuring ends 23 of the temperature measuring members 20 may be disposed at substantially the same position, so that when measuring temperature, the average value of the temperature measuring results of the temperature measuring members 20 may be taken as the temperature measuring result at the position, thereby improving the accuracy of the temperature measuring result.
In some embodiments, referring to fig. 2 to 5, an end of the second temperature measuring body 22 of at least a part of the temperature measuring members 20 away from the temperature measuring end 23 is grounded, and in combination with the foregoing, the first temperature measuring body 21 and the second temperature measuring body 22 are usually made of a metal material, so that during the temperature measurement, the first temperature measuring body 21 and the second temperature measuring body 22 may also generate interference charges, for example, friction may be generated between the first temperature measuring body 21 and the second temperature measuring body 22, and between the first temperature measuring body 21 and the second temperature measuring body 22 and an inner wall of the metal housing 10 of the plurality of temperature measuring members 20 to generate interference charges, and for example, when the temperature measuring device operates in a magnetic field environment, the first temperature measuring body 21 and the second temperature measuring body 22 may generate interference charges by magnetic induction, so as to affect the accuracy of the temperature measurement result. Therefore, one end of the second temperature measuring body 22 far away from the temperature measuring end 23 can be grounded, that is, the terminal of the temperature measuring body with low electromotive force during temperature measurement is grounded, so that interference charges are led out, and the accuracy of the measurement result is improved.
It should be noted that, in such an embodiment, since the second temperature measuring body 22 is grounded, the electromotive force of the second temperature measuring body 22 will be 0 during temperature measurement, and the current intensity generated between the first temperature measuring body 21 and the second temperature measuring body 22 due to the electromotive force difference will also change accordingly, and when obtaining the temperature measurement result according to the current intensity between the first temperature measuring body 21 and the second temperature measuring body 22, the relationship between the current intensity and the temperature needs to be calibrated again to obtain the correct temperature measurement result.
In some embodiments, referring to fig. 2, the second temperature sensing body 22 may be connected to a ground member such as a ground stake to achieve grounding. In some embodiments, similar to the grounding of the conducting wire 30, the second temperature measuring body 22 can also be configured to be grounded separately, so as to further improve the accuracy of the temperature measurement result.
In some embodiments, referring to fig. 5, the end of the second temperature measuring body 22 away from the temperature measuring end 23 can be connected with a wire 30 to realize grounding. In some embodiments, in combination with the foregoing, the lead 30 may leave the cavity 11 through the opening on the metal shell 10, and the connection point of the second temperature measuring body 22 and the lead 30 may be located in the cavity 11, so that the second temperature measuring body 22 may not leave the cavity 11 through the opening, and an excessive opening or an excessive diameter opening may not be provided on the metal shell 10, so that the metal shell 10 can better protect the temperature measuring part 20, and the processing difficulty of the metal shell 10 is reduced. In some embodiments, the connection point of the second temperature sensing body 22 and the lead 30 may be located outside the chamber 11, i.e. the second temperature sensing body 22 is connected to the lead 30 after leaving the chamber 11.
In some embodiments, still referring to FIG. 5, when the plurality of second temperature sensing bodies 22 are connected to the lead 30, the plurality of second temperature sensing bodies 22 are connected at different locations on the lead 30. Therefore, the plurality of second temperature measuring bodies 22 are not connected with each other, so that interference among the plurality of second temperature measuring bodies 22 is avoided, and the accuracy of the temperature measuring result is further improved.
In the above embodiments, at least one temperature measuring member 20 is configured as a thermocouple, and since the metal housing 10 is a conductor, the temperature measuring member 20 needs to be insulated from the metal housing 10 when the at least one temperature measuring member 20 is fixed in the lumen 11. In some embodiments, the temperature measuring member 20 may be disposed at a proper position of the cavity 11 using a fixing member (not shown) made of an insulating material to prevent the temperature measuring end 23 of the temperature measuring member 20 from contacting the metal case 10. In some embodiments, the thermometric device may further comprise a filler 40, the filler 40 being disposed within the cavity 11 to insulate the at least one thermometric element 20 from the metal casing 10.
In some embodiments, the filler 40 may include at least one of: alumina powder, beryllium oxide powder. That is, the filler 40 may be one of alumina powder and beryllium oxide powder, or a mixture thereof, and such a filler 40 can insulate the second temperature measuring part 20 from the metal case 10. On the other hand, in such an embodiment, the temperature measuring end 23 of the temperature measuring part 20 will contact with the filler 40, and the alumina powder and the beryllium oxide powder can also be used as heat conducting materials, so as to ensure that the temperature measured by the temperature measuring part 20 is approximately the same as the real temperature of the substance to be measured. On the other hand, the filler 40 can also better fix the temperature measuring part 20 in the cavity 11, so as to avoid the temperature measuring part 20 from shaking. In some embodiments, one skilled in the art can select other suitable insulating materials as the filler 40 according to actual requirements.
According to another aspect of the embodiments of the present invention, there is also provided a temperature measuring system, referring to fig. 1 to 5, the temperature measuring system includes a temperature measuring device 100 and a first grounding body 210, the temperature measuring device 100 includes: a metal housing 10, the metal housing 10 forming a chamber 11; at least one temperature measuring piece 20, wherein the at least one temperature measuring piece 20 is arranged in the cavity 11; one end of the lead 30 is connected with the metal shell 10, and the other end is grounded so as to lead out the electric charge generated by the metal shell 10; the first ground body 210 is adapted to be connected to the other end of the wire 30 to ground the other end of the wire 30.
It is understood that the temperature measuring device 100 can be the temperature measuring device described in any of the above embodiments, and the description thereof is omitted. The first grounding body 210 may be a grounding stub or the like for grounding to achieve grounding of the wire 30.
In some embodiments, the first grounding body 210 is configured to be connected with only the wires 30, that is, the first grounding body 210 solely grounds the wires 30, so as to better conduct the charges generated by the metal housing 10 out, and obtain better temperature measurement effect.
In some embodiments, the temperature measuring members 20 may be thermocouples, and as mentioned above, each temperature measuring member 20 may include a first temperature measuring body 21 and a second temperature measuring body 22, and one end of the first temperature measuring body 21 and one end of the second temperature measuring body 22 are connected to form a temperature measuring end 23 of the temperature measuring member 20; the first temperature measuring body 21 and the second temperature measuring body 22 are made of different materials, so that the electromotive force of the first temperature measuring body 21 is higher than that of the second temperature measuring body 22 when the temperature measuring end 23 measures temperature.
In some embodiments, referring to fig. 2 and 4, the thermometric system further comprises a second grounding body 220, the second grounding body 220 is used for connecting with the second thermometric body 22 of at least a part of the thermometric member 20 to ground the thermometric member, wherein the second grounding body 220 is connected to an end of the second thermometric body 22 away from the thermometric end 23. The second grounding body 220 may also be a grounding peg or the like for grounding, similar to the first grounding body 210.
In some embodiments, as mentioned before, the second temperature sensing body 22 may also be connected to the conductor 30 to achieve grounding, i.e. eventually grounding through the first grounding body 210, in such embodiments the first grounding body 210 may still be arranged to be connected only to the conductor 30. In some embodiments, the second temperature sensing body 22 can also be directly connected to the first grounding body 210 for grounding.
In some embodiments, each second grounding body 220 is configured to be connected with only one second temperature measuring body 22, that is, when the second temperature measuring bodies 22 are grounded, each second temperature measuring body 22 is configured to be separately grounded, so that the interference charges generated by the temperature measuring parts 20 can be better led out, and the accuracy of the temperature measuring result is further improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (16)
1. A temperature measuring device, comprising:
a metal housing (10), the metal housing (10) forming a chamber (11);
at least one thermometric element (20), said at least one thermometric element (20) being disposed within said chamber (11); and
and one end of the lead (30) is connected with the metal shell (10), and the other end of the lead (30) is grounded so as to lead out the electric charge generated by the metal shell (10).
2. The thermometric device according to claim 1, wherein the connection point of the wire (30) to the metal casing (10) is located inside the chamber (11).
3. A thermometric apparatus according to claim 1 or 2, wherein each thermometric member (20) comprises a first thermometric body (21) and a second thermometric body (22),
one end of the first temperature measuring body (21) and one end of the second temperature measuring body (22) are connected to form a temperature measuring end (23) of the temperature measuring part (20);
the first temperature measuring body (21) and the second temperature measuring body (22) are made of different materials, so that the electromotive force of the first temperature measuring body (21) is higher than that of the second temperature measuring body (22) when the temperature measuring end (23) measures the temperature.
4. The temperature measuring device according to claim 3,
the chamber (11) is arranged in a tubular shape;
when the temperature measuring parts (20) are multiple, the temperature measuring ends (23) of the temperature measuring parts (20) are arranged at different positions in the cavity (11) along the axial direction of the cavity (11).
5. The thermometric apparatus according to claim 3, wherein the end of the second thermometric body (22) of at least part of the thermometric member (20) distal from the thermometric end (23) is grounded.
6. The thermometric device according to claim 5, wherein the end of the second thermometric body (22) remote from the thermometric end (23) is connected to the conducting wire (30) to achieve grounding.
7. A thermometric apparatus according to claim 6, wherein the connection point of the lead (30) to the second thermometric body (22) is located within the chamber (11).
8. A thermometric apparatus according to claim 6 or 7, wherein when a plurality of the second thermometric bodies (22) are connected to the conducting wire (30), a plurality of the second thermometric bodies (22) are connected at different locations on the conducting wire (30).
9. The temperature measuring device according to any one of claims 1 to 8, further comprising:
a filler (40), the filler (40) being disposed within the cavity (11) to insulate the at least one thermometric element (20) from the metal casing (10).
10. The thermometric apparatus of claim 9, wherein the filler (40) comprises at least one of: alumina powder, beryllium oxide powder.
11. The thermometric device according to any one of claims 1 to 10, wherein said thermometric device operates in a magnetic field environment, said metal housing (10) generating said electric charge by electromagnetic induction.
12. A thermometry system comprising:
a temperature measuring device (100) and a first grounding body (210),
the temperature measuring device (100) includes:
a metal housing (10) forming a chamber (11);
at least one temperature measuring piece (20), wherein the at least one temperature measuring piece (20) is arranged in the cavity (11) and is used for measuring temperature; and
a lead (30), one end of the lead (30) is connected with the metal shell (10), and the other end is grounded so as to lead out the electric charge generated by the metal shell (10);
the first grounding body (210) is used for being connected with the other end of the lead (30) to ground the other end of the lead (30).
13. The thermometric system of claim 12, wherein said first grounding body (210) is arranged to be connected only to said conducting wire (30).
14. Thermometric system according to claim 12 or 13, wherein each thermometric piece (20) comprises a first thermometric body (21) and a second thermometric body (22),
one end of the first temperature measuring body (21) and one end of the second temperature measuring body (22) are connected to form a temperature measuring end (23) of the temperature measuring part (20);
the first temperature measuring body (21) and the second temperature measuring body (22) are made of different materials, so that the electromotive force of the first temperature measuring body (21) is higher than that of the second temperature measuring body (22) when the temperature measuring end (23) measures the temperature.
15. The thermometry system of claim 14, further comprising:
at least one second grounding body (220), wherein the second grounding body (220) is used for being connected with at least part of the second temperature measuring body (22) of the temperature measuring part (20) so as to ground at least part of the second temperature measuring body (22) of the temperature measuring part (20), and the second grounding body (200) is connected to one end, away from the temperature measuring end (23), of the second temperature measuring body (22).
16. The thermometric system of claim 15, wherein each of the second grounding bodies (220) is arranged to be connected to only one of the second thermometric bodies (22).
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