CN111380619A - Closed circulating water-cooling thermocouple based on 3D printing micro-channel - Google Patents
Closed circulating water-cooling thermocouple based on 3D printing micro-channel Download PDFInfo
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- CN111380619A CN111380619A CN202010265173.1A CN202010265173A CN111380619A CN 111380619 A CN111380619 A CN 111380619A CN 202010265173 A CN202010265173 A CN 202010265173A CN 111380619 A CN111380619 A CN 111380619A
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- 238000001816 cooling Methods 0.000 title claims abstract description 126
- 238000010146 3D printing Methods 0.000 title claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000000498 cooling water Substances 0.000 claims abstract description 57
- 230000001681 protective effect Effects 0.000 claims abstract description 55
- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims description 26
- 238000009826 distribution Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 17
- 238000009529 body temperature measurement Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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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
- G01K1/10—Protective devices, e.g. casings for preventing chemical attack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- 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
- G01K7/04—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 the object to be measured not forming one of the thermoelectric materials
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- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention relates to a closed circulating water-cooled thermocouple based on a 3D printing micro-channel, belonging to the technical field of temperature measurement in a high-temperature strong-corrosion environment; the device comprises a 3D printing micro-channel water-cooling protective sleeve, a closed water-cooling circulating cooling system, a thermocouple wire, an insulating sleeve, a temperature measuring probe and a junction box; the periphery of the thermocouple wire and the insulating sleeve is sleeved with a 3D printing micro-channel water-cooling protective sleeve, and the protective sleeve is connected with a closed water-cooling circulating cooling system through a cooling water pipe; one end of the thermocouple wire and the insulating sleeve is provided with a temperature measuring probe, and the other end is provided with a junction box. According to the invention, the 3D printing micro-channel water-cooling protective sleeve is adopted, and the closed circulating water is adopted to cool the protective sleeve, so that the problem that the thermocouple protective sleeve is easy to corrode and deform in a high-temperature and high-corrosion environment is effectively solved, and the service life of the thermocouple is prolonged; high cost performance and wide application range.
Description
Technical Field
The invention relates to a closed circulating water-cooled thermocouple based on a 3D printing micro-channel, and belongs to the technical field of temperature measurement in a high-temperature and strong-corrosion environment.
Background
The thermocouple has the advantages of high measurement precision, wide measurement range, simple structure, low price and the like, and is widely applied to the field of weak-corrosion contact temperature measurement in the industries of chemical engineering, electric power and the like. However, in high-temperature and strong-corrosion flue gas environments such as waste incineration boilers and hazardous waste boilers, conventional high-grade stainless steel and special alloy thermocouple protection sleeves containing rare metals are expensive and face the problem of rapid corrosion, so that the service life of the thermocouples is short and the replacement frequency is high. In addition, the larger the section of general measurement is, the more uneven the distribution of medium flow fields such as flue gas, and in order to obtain a more accurate measurement result, the longer the thermocouple is inserted, which easily causes severe deformation of the thermocouple under a high-temperature and strong-corrosion environment, and causes damage to the thermode or incapability of extraction during replacement. Therefore, the technical field needs to effectively solve the problems of corrosion and deformation of the thermocouple protection sleeve in a high-temperature and high-corrosion environment.
Disclosure of Invention
The invention aims to solve the technical problem that a thermocouple protection sleeve is easy to corrode and deform in a high-temperature and high-corrosion environment.
In order to solve the problems, the technical scheme adopted by the invention is to provide a closed circulating water-cooled thermocouple based on a 3D printing micro-channel, which comprises a 3D printing micro-channel water-cooled protective sleeve, a closed water-cooled circulating cooling system, a thermocouple wire, an insulating sleeve, a temperature measuring probe and a junction box, wherein the closed circulating water-cooled thermocouple comprises a thermocouple wire and a thermocouple wire; the periphery of the thermocouple wire and the insulating sleeve is sleeved with a 3D printing micro-channel water-cooling protective sleeve, and the 3D printing micro-channel water-cooling protective sleeve is connected with a closed water-cooling circulating cooling system through a cooling water pipe; one end of the thermocouple wire and one end of the insulating sleeve are provided with temperature measuring probes, and the other end of the thermocouple wire and the insulating sleeve are provided with a junction box.
Preferably, the 3D printing micro-channel water-cooling protective sleeve is in a cylindrical shape, and an annular water inlet and return mixing tank with a circular cylindrical wall is arranged in the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve and close to one side of the temperature measuring probe; an annular water inlet distribution groove and an annular water return convergence groove which are not communicated with each other and are formed in the side, far away from the temperature measuring probe, of the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve; a water inlet micro-cooling channel is arranged between the annular water inlet and return mixing tank and the annular water inlet distribution tank; and a return water micro-cooling channel is arranged between the annular inlet return water mixing tank and the annular return water merging tank.
Preferably, 4 water inlet micro-cooling channels are axially arranged in the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve, and are uniformly arranged on the circumference of the cylindrical wall; a backwater micro-cooling channel is arranged between the water inlet micro-cooling channels; the backwater micro-cooling channels are uniformly arranged on the circumference of the cylinder wall.
Preferably, the closed water-cooling circulating cooling system comprises a circulating water tank, a circulating water pump, a cooling water inlet ball valve, a check valve and an air cooler; a cooling water inlet connecting pipe arranged on the annular water inlet distribution groove is connected with the circulating water tank through a cooling water inlet ball valve; a circulating water pump is arranged between the cooling water inlet ball valve and the circulating water tank; and a cooling water outlet connecting pipe arranged on the annular water return merging groove is connected with the circulating water tank through an air cooler, and a check valve is arranged between the cooling water outlet connecting pipe and the air cooler.
Preferably, a pressure gauge is arranged between the circulating water pump and the cooling water inlet ball valve, and a cooling water outlet thermometer is arranged between the cooling water outlet connecting pipe and the check valve.
Preferably, the circulating water tank is provided with an electric contact liquid level meter for detecting the water level, and the circulating water tank is used for supplementing water through a water supplementing ball valve.
Preferably, the distance between the annular water inlet and return mixing tank of the 3D printing micro-channel water-cooling protective sleeve and the tail end of the thermocouple wire is set to be less than or equal to 20 cm.
Preferably, the end part of the 3D printing micro-channel water-cooling protective sleeve adjacent to the annular water inlet and return mixing tank is provided with a temperature measuring probe; the outer surface of the temperature measuring probe is provided with a Ni-Cr-W cladding coating.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a closed circulating water-cooled thermocouple based on a 3D printing micro-channel, which comprises a main body, a 3D printing micro-channel water-cooled protective sleeve, a closed water-cooled circulating cooling system, a thermocouple wire, an insulating sleeve and a junction box. The 3D printing micro-channel water-cooling protective sleeve is adopted, and meanwhile, the closed circulating water is adopted to cool the protective sleeve, so that the problems of corrosion and deformation of the thermocouple protective sleeve in a high-temperature and high-corrosion environment are effectively solved, and the service life of the thermocouple is prolonged; the performance-price ratio is high, the application range of the thermocouple can be expanded, and the thermocouple can replace a smoke temperature probe and an infrared thermometer which are expensive.
Drawings
FIG. 1 is a schematic structural view of a 3D printing micro-channel closed circulation water-cooling thermocouple of the present invention;
FIG. 2 is a schematic view of a closed water-cooling circulating cooling system according to the present invention;
FIG. 3 is a schematic structural view of a 3D printing micro-channel water-cooling protective sleeve according to the present invention;
FIG. 4 is a cross-sectional view of a 3D printing microchannel water-cooled protective sleeve A-A of the present invention;
FIG. 5 is a cross-sectional view of a 3D printing micro-channel water-cooled protective sleeve B-B of the present invention;
reference numerals: the device comprises a 1.3D printing micro-channel water-cooling protective sleeve 2, a closed water-cooling circulating cooling system 3, a thermocouple wire and an insulating sleeve 4, a junction box 5.3D printing micro-channel water-cooling protective sleeve water-cooling connecting pipe 6, a cooling water outlet thermometer 7, a check valve 8, an air cooler 9, a water replenishing ball valve 10, an electric contact liquid level meter 11, a circulating water tank 12, a circulating water pump 13, a pressure gauge 14, a cooling water inlet ball valve 15, a water inlet micro-cooling channel 16, a water return micro-cooling channel 17, an annular water inlet distribution groove 18, an annular water return convergence groove 19, a water inlet and return mixing groove 20, a temperature measuring probe 21, a connecting thread 22, a fixed flange 23, a cooling water inlet connecting pipe 24 and a cooling water outlet.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1-5, the invention provides a closed type circulating water-cooled thermocouple based on a 3D printing micro-channel, which comprises a 3D printing micro-channel water-cooled protective sleeve 1, a closed type water-cooled circulating cooling system 2, a thermocouple wire and insulating sleeve 3, a temperature measuring probe 20 and a junction box 4; the periphery of the thermocouple wire and the insulating sleeve 3 is sleeved with a 3D printing micro-channel water-cooling protective sleeve 1, and the 3D printing micro-channel water-cooling protective sleeve 1 is connected with a closed water-cooling circulating cooling system 2 through a 3D printing micro-channel water-cooling protective sleeve water-cooling connecting pipe 5; one end of the thermocouple wire and the insulating sleeve 3 is provided with a temperature measuring probe 20, and the other end is connected with a junction box 4. The 3D printing micro-channel water-cooling protective sleeve 1 is in a cylindrical shape, and an annular water inlet and return mixing tank 19 with a cylindrical wall is arranged in the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve 1 and close to one side of the temperature measuring probe 20; an annular water inlet distribution groove 17 and an annular water return merging groove 18 which are not communicated with each other and are arranged on one side of the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve far away from the temperature measuring probe 20; a water inlet micro-cooling channel 15 is arranged between the annular water inlet and return mixing tank 19 and the annular water inlet distribution tank 17; a backwater micro-cooling channel 16 is arranged between the annular backwater inlet mixing tank 19 and the annular backwater merging tank 18. 4 water inlet micro-cooling channels 15 are axially arranged in the cylinder wall of the 3D printing micro-channel water-cooling protective sleeve 1, and the water inlet micro-cooling channels 15 are uniformly arranged on the circumference of the cylinder wall; a backwater micro-cooling channel 16 is arranged between the water inlet micro-cooling channels 15; the backwater micro-cooling channels 16 are uniformly arranged on the circumference of the cylinder wall. The closed water-cooling circulating cooling system 2 comprises a circulating water tank 11, a circulating water pump 12, a cooling water inlet ball valve 14, a check valve 7 and an air cooler 8; a cooling water inlet connecting pipe 23 arranged on the annular water inlet distribution groove 17 is connected with the circulating water tank 11 through a cooling water inlet ball valve 14; a circulating water pump 12 is arranged between the cooling water inlet ball valve 14 and the circulating water tank 11; and a cooling water outlet connecting pipe 24 arranged on the annular water return merging tank 18 is connected with the circulating water tank 11 through the air cooler 8, and a check valve 7 is arranged between the cooling water outlet connecting pipe 24 and the air cooler 8. A pressure gauge 13 is arranged between the circulating water pump 12 and the cooling water inlet ball valve 14, and a cooling water outlet thermometer 6 is arranged between the cooling water outlet connecting pipe 24 and the check valve 7. The circulating water tank 11 is provided with an electric contact liquid level meter 10 for detecting the water level, and the circulating water tank 11 is replenished with water through a water replenishing ball valve 9. The distance between the annular water inlet and return mixing tank 19 of the 3D printing micro-channel water-cooling protective sleeve 1 and the tail end of the thermocouple wire is set to be less than or equal to 20 cm. The end part of the 3D printing micro-channel water-cooling protective sleeve 1 adjacent to the annular water inlet and return mixing tank 19 is provided with a temperature measuring probe 20; the outer surface of the temperature measuring probe 20 is provided with a Ni-Cr-W cladding coating.
As shown in fig. 1, inside 3D printed microchannel water-cooling protection sleeve 1 inserted into the medium to be measured, the medium temperature was transmitted to thermocouple wire and insulation sleeve 3 through 3D printed microchannel water-cooling protection sleeve 1, thermocouple wire and insulation sleeve 3 converted the temperature signal into a thermal electromotive force signal, and transmitted the temperature signal to external equipment through terminal box 4. The closed water-cooling circulation cooling system 2 is used for forcibly circularly cooling the 3D printing micro-channel water-cooling protective sleeve 1 by adopting demineralized water so as to avoid deformation and rapid corrosion of the protective sleeve.
As shown in fig. 2, the circulation water tank 11 stores demineralized water, and the level of the demineralized water can be warned by the electric contact liquid level meter 10. The cooling water is conveyed to the water-cooling connecting pipe 5 of each 3D printing micro-channel water-cooling protective sleeve through the circulating water pump 12, and the cooling water heated by the 3D printing micro-channel water-cooling protective sleeve 1 is conveyed to the air cooler 8 for natural air cooling and then returns to the circulating water tank 11. The cooling water air cooler 8 is a heat exchanger with a high surface area ratio, and can cool the cooling water with the designed flow to about 40 ℃ under the natural ventilation condition in the factory. During first debugging, the temperature displayed by the cooling water outlet thermometer 6 is kept at about 80 ℃ by combining the output of the circulating water pump 12 and the opening degree of the cooling water inlet ball valve 14, so that the cooling effect is prevented from being reduced due to the fact that the cooling water is too small and boils in the micro-channel. In the operation stage, the cooling water outlet thermometer 6 has a fault alarm function, and whether the 3D printing micro-channel water-cooling protective sleeve is blocked or damaged and leaked or not needs to be checked by combining the numerical value change of the electric contact liquid level meter 10 at the temperature lower than 45 ℃. The cooling water outlet pipeline is provided with a check valve 7, and the corresponding branch 3D printing micro-channel water-cooling protective sleeve can be overhauled and replaced by closing the cooling water inlet ball valve 14.
As shown in fig. 3, the connecting screw 21 is used for connecting the junction box, and the fixing flange 22 is used for assembling and fixing the 3D printing micro-channel water-cooling protective sleeve 1. The water-cooling area sleeve is manufactured by adopting a 3D printing technology, is made of conventional 304 stainless steel and has the following structure: the diameter of the inlet water micro-cooling channel 15 is 2mm, the inlet water micro-cooling channel starts from an annular inlet water distribution groove 17 and ends at an inlet water and return water mixing groove 19, and the annular inlet water distribution groove 17 is communicated with a cooling water inlet connecting pipe 23. The diameter of the backwater micro-cooling channel 16 is 2mm, the backwater micro-cooling channel starts from a backwater inlet mixing tank 19 and ends at an annular backwater merging tank 18, and the annular backwater merging tank 18 is communicated with a cooling water outlet connecting pipe 24. In order to ensure the measurement accuracy, the distance between the water inlet and return mixing tank 19 and the tail end of the thermocouple wire is about 20cm, and the rear end of the water inlet and return mixing tank 19 is provided with a temperature measuring probe 20 with the length of about 25 cm. The outer surface of the temperature measuring probe 20 is coated with a Ni-Cr-W cladding coating with the thickness of 2mm by laser cladding, so that the wear resistance and the corrosion resistance are improved.
The invention consists of a 3D printing micro-channel water-cooling protective sleeve 1, a closed water-cooling circulating cooling system 2, a thermocouple wire and insulating sleeve 3 and a junction box 4. The thermocouple can be used for temperature measurement in high-temperature strong-corrosion flue gas environments such as waste incineration boilers and dangerous waste boilers, wherein thermocouple wires, insulating sleeves and junction boxes are the same as those of conventional thermocouples, and the temperature can be measured in the high-temperature strong-corrosion flue gas environments by manufacturing a micro-channel water-cooling protective sleeve and a set of simple, reliable and low-energy-consumption closed water-cooling circulating cooling system by adopting a 3D printing technology. The wall thickness of the 3D printing micro-channel water-cooling protective sleeve 1 is about 4mm, 8 water-cooling channels with the diameter of 2mm are uniformly distributed in the circumferential direction, and 4 water inlet flow channels and 4 water return flow channels are arranged at intervals. The water inlet flow path channel starts from the annular water inlet distribution groove 17 and ends at the water inlet and return mixing groove 19, and the annular water inlet distribution groove 17 is communicated with the cooling water inlet connecting pipe 23. The backwater flow path channel starts from the backwater inlet mixing tank 19 and ends at the annular backwater merging tank 18, and the annular backwater merging tank 18 is communicated with the cooling water outlet connecting pipe 24. In order to ensure the measurement precision, the distance between the water inlet and return mixing tank 19 and the tail end of the thermocouple wire is about 20cm, and the rear end of the water inlet and return mixing tank 19 is provided with a temperature measuring probe (the length is about 25cm) with a non-water-cooling structure. The sleeve is made of conventional 304 stainless steel, but the outer surface of the temperature measuring probe is additionally coated with a Ni-Cr-W coating with the thickness of 2mm by laser deposition so as to improve the wear resistance and the corrosion resistance. The closed water-cooling circulating cooling system mainly comprises a circulating water tank 11, a circulating water pump 12, an air cooler 8, a pipeline and a valve instrument. The cooling water flow of each 3D printing micro-channel closed circulation water-cooling thermocouple is about 10-30 kg/h, so that one set of closed water-cooling circulation cooling system can adopt a parallel pipeline type to cool a plurality of 3D printing micro-channel closed circulation water-cooling thermocouples. The cooling water needs to adopt demineralized water to prevent scaling from blocking the micro-cooling channel, and the demineralized water does not need to be supplemented under normal conditions due to the closed circulating system.
When the closed circulation cooling water cooling device works, the flow of the closed circulation cooling water is as follows: the cooling water is sent to an annular water inlet distribution groove 17 of the 3D printing micro-channel water-cooling protective sleeve 1 through a pipeline by using a circulating pump 12, enters 4 water inlet micro-cooling channels 15 after being distributed, and then reaches a water inlet and return mixing groove 19; and the water enters 4 backwater micro-cooling channels 16 after being redistributed in the backwater inlet mixing tank 19, is finally converged by the annular backwater converging tank 18 and then is sent to the air cooler 8 through a pipeline, and the water cooled in the factory environment returns to the circulating water tank 11 to finish a circulating flow. During first debugging, the temperature displayed by the cooling water outlet thermometer 6 is kept at about 80 ℃ by combining the output of the circulating water pump 12 and the opening degree of the cooling water inlet ball valve 14, so that the cooling effect of cooling water in the steam-water in the micro-channel is prevented from being reduced. In the operation stage, the low-temperature alarm of the cooling water outlet thermometer 6 is noticed, and whether the 3D printing micro-channel water-cooling protective sleeve is blocked or damaged and leaked or not needs to be checked by combining the value change of a circulating water tank electric contact water level meter 10 at the temperature of being lower than 50 ℃.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a print microchannel closed circulation water-cooling thermocouple based on 3D, its characterized in that: the device comprises a 3D printing micro-channel water-cooling protective sleeve, a closed water-cooling circulating cooling system, a thermocouple wire, an insulating sleeve, a temperature measuring probe and a junction box; the periphery of the thermocouple wire and the insulating sleeve is sleeved with a 3D printing micro-channel water-cooling protective sleeve, and the 3D printing micro-channel water-cooling protective sleeve is connected with a closed water-cooling circulating cooling system through a cooling water pipe; one end of the thermocouple wire and one end of the insulating sleeve are provided with temperature measuring probes, and the other end of the thermocouple wire and the insulating sleeve are provided with a junction box.
2. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel is characterized in that: the 3D printing micro-channel water-cooling protective sleeve is in a cylindrical shape, and an annular water inlet and return mixing tank with a cylindrical wall is arranged in the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve and close to one side of the temperature measuring probe; an annular water inlet distribution groove and an annular water return convergence groove which are not communicated with each other and are formed in the side, far away from the temperature measuring probe, of the cylindrical wall of the 3D printing micro-channel water-cooling protective sleeve; a water inlet micro-cooling channel is arranged between the annular water inlet and return mixing tank and the annular water inlet distribution tank; and a return water micro-cooling channel is arranged between the annular inlet return water mixing tank and the annular return water merging tank.
3. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel as claimed in claim 2, wherein: 4 water inlet micro-cooling channels are axially arranged in the cylinder wall of the 3D printing micro-channel water-cooling protective sleeve, and are uniformly arranged on the circumference of the cylinder wall; a backwater micro-cooling channel is arranged between the water inlet micro-cooling channels; the backwater micro-cooling channels are uniformly arranged on the circumference of the cylinder wall.
4. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel is characterized in that: the closed water-cooling circulating cooling system comprises a circulating water tank, a circulating water pump, a cooling water inlet ball valve, a check valve and an air cooler; a cooling water inlet connecting pipe arranged on the annular water inlet distribution groove is connected with the circulating water tank through a cooling water inlet ball valve; a circulating water pump is arranged between the cooling water inlet ball valve and the circulating water tank; and a cooling water outlet connecting pipe arranged on the annular water return merging groove is connected with the circulating water tank through an air cooler, and a check valve is arranged between the cooling water outlet connecting pipe and the air cooler.
5. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel is characterized in that: and a pressure gauge is arranged between the circulating water pump and the cooling water inlet ball valve, and a cooling water outlet thermometer is arranged between the cooling water outlet connecting pipe and the check valve.
6. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel is characterized in that: the circulating water tank is provided with an electric contact liquid level meter for detecting the water level, and the circulating water tank is used for supplementing water through a water supplementing ball valve.
7. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel as claimed in claim 6, wherein: the distance between the annular water inlet and return mixing tank of the 3D printing micro-channel water-cooling protective sleeve and the tail end of the thermocouple wire is set to be less than or equal to 20 cm.
8. The closed circulation water-cooled thermocouple based on the 3D printing micro-channel as claimed in claim 6, wherein: the end part of the 3D printing micro-channel water-cooling protective sleeve adjacent to the annular water inlet and return mixing tank is provided with a temperature measuring probe; the outer surface of the temperature measuring probe is provided with a Ni-Cr-W cladding coating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010265173.1A CN111380619A (en) | 2020-04-07 | 2020-04-07 | Closed circulating water-cooling thermocouple based on 3D printing micro-channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010265173.1A CN111380619A (en) | 2020-04-07 | 2020-04-07 | Closed circulating water-cooling thermocouple based on 3D printing micro-channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118741986A (en) * | 2024-09-04 | 2024-10-01 | 安格诺尔(江苏)智能电气有限公司 | Intelligent grounding box for on-line monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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