CN105333976A - Tungsten-molybdenum protective tube high-temperature sheathed thermocouple vacuum calibration device - Google Patents
Tungsten-molybdenum protective tube high-temperature sheathed thermocouple vacuum calibration device Download PDFInfo
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- CN105333976A CN105333976A CN201510893440.9A CN201510893440A CN105333976A CN 105333976 A CN105333976 A CN 105333976A CN 201510893440 A CN201510893440 A CN 201510893440A CN 105333976 A CN105333976 A CN 105333976A
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Abstract
The invention provides a tungsten-molybdenum protective tube high-temperature sheathed thermocouple vacuum calibration device. The device comprises a furnace body, a water cooling system and a control system, wherein the furnace body is of a water cooling structure, a water cooling furnace shell is cylindrical, the two ends of the water cooling furnace shell are detachably sealed through end cover flanges, an aiming target is arranged at the center of a furnace body heating pipe, heating units are symmetrically and oppositely arranged on the two sides of the aiming target in the coaxial direction of the water cooling furnace shell, and the aiming target and the heating units are sequentially wrapped in an inner graphite sleeve, an outer graphite sleeve, carbon fiber and insulation fiber. By the adoption of the device, vacuum calibration of a tungsten-molybdenum protective tube high-temperature sheathed thermocouple can be achieved, the blank in the field in China can be filled, the calibration and detection capacity of the national defense 5212 secondary metering station can be improved, the service range of the national defense 5212 secondary metering station can be widened, and therefore high social benefits and economic benefits are obtained. Most importantly, a new technical test means and metering guarantee are provided for scientific research and production of the defense military industry.
Description
Technical field
The present invention relates to a kind of tungsten protection tube high temperature armoured thermocouple vacuum correction device, belong to gauge check technical field.
Background technology
Along with the development of aircraft industry, the R&D and production of China's aeromotor has entered into the period of a high speed development, and in product testing with production, new material new process continues to bring out, and product hot processing temperature is more and more higher.A lot of military enterprise has all introduced many vacuum drying ovens for this reason.My these equipment of region about have four or five ten more than according to incompletely statistics, and common demands carries out the detection of temperature uniformity, effective heating area and systematic error, and thermometric, temperature-control heat couple also must carry out periodic verification.Such as there are multiple stage vacuum drying oven in Guizhou Liyang Aerospace Power Co., Ltd.'s cast blade subsidiary factory, forging blade subsidiary factory.The horizontal vacuum furnace of French MBA company has been introduced for meeting the technique needs such as model engine blade thermal treatment solid solution, actual effect, destressing, soldering, the integrated metal armouring S type thermopair of tens φ 3mm is had with furnace zone, this kind of thermopair school inspection/serviceability temperature is up to 1550 DEG C, have that thermal response is fast, shock resistance, measuring accuracy high, and because the little good airproof performance to body of heater of external diameter, price is also very expensive.Problem is that this kind of integrated its metal jacket pipe of metallic high temperature armoured thermocouple mostly is the high temperature resistant but not oxidation resistant rare metal composition such as tungsten, under air conditions, more than 1000 DEG C oxidation corrosiones are serious, the lighter causes the oxidation corrosion of metallic high temperature armoured thermocouple metal jacket pipe to scrap, severe one makes air enter in vacuum drying oven with pipe seam gap in damage thermopair the oxidation stain of heating molybdenum plate is brought about great losses, and more likely therefore delays completing of normal military research and production task.So this kind of thermopair can not be examined and determine under air conditions, must carry out calibrating/examining and determine under the environment vacuumized or pour the inert gases such as argon gas.Although the defense-related science, technology and industry 5212 secondary test satellite location that current Guizhou Liyang Aerospace Power Co., Ltd.'s gauge check center has under its command has the thermocouple calibration such as standard, industry device; but to examine and determine under not possessing vacuum condition, the ability of calibration tungsten protection tube high temperature armoured thermocouple, domestic also rarely test satellite location possess this ability.
Summary of the invention
The object of the invention is can not to join special tungsten protection tube high temperature armoured thermocouple to vacuum drying oven for traditional calibration method to calibrate; the present situation directly quality assurance of model engine blade process for machining and manufacturing impacted; propose a kind of tungsten protection tube high temperature armoured thermocouple vacuum correction solution, be a kind of tungsten protection tube high temperature armoured thermocouple vacuum correction device.
The present invention is achieved by the following technical programs.
A kind of tungsten protection tube high temperature armoured thermocouple vacuum correction device provided by the invention, comprises body of heater, water-cooling system, control system, described body of heater is water cooled furnace body structure, water cooled furnace body is cylindric, water cooled furnace body two ends are by end cap flange removable seal, the center of body of heater heating tube is provided with aiming target, aiming target both sides are oppositely arranged symmetrical heater along water cooled furnace body coaxial direction, heater is enclosed with interior graphite cannula bucket outward successively, outer graphite cannula bucket, carbon fiber, insulation fibre, interior graphite cannula bucket, outer graphite cannula bucket, carbon fiber, insulation fibre is defined in water cooled furnace body by the fire-resistant ring flange at heater two ends, heater end winding support is on active joint, active joint is fixed on two ends in water cooled furnace body, the end of water cooled furnace body is also provided with exhaust tube and quartz window, in the housing of water cooled furnace body, guide ring is set, guide ring pipeline communication is in the water inlet pipe and water outlet pipe being arranged on water cooled furnace body end, just the silicon photocell for observing and controlling temperature is also provided with to front, body of heater center, described water-cooling system is by a main valve and multiple valve channelings absorb heat, dispel the heat in a road pipeline, and many heat absorption pipelines corresponding to multiple valves respectively corresponding pipelines connect the cooling pipeline of water cooled furnace bodys and silicon photocell, described control system core is computing machine, installation calibrating thermopair software in computing machine, and computing machine connects printer and display, computing machine is also connected with control interface, scanning switch and digital multimeter, control interface connects Control for Kiln Temperature, scanning switch connecting multi-channel terminal box, Control for Kiln Temperature is all connected temperature measuring device with hyperchannel terminal box, temperature measuring device comprises the standard couple, the tested thermopair that are contained in body of heater center and is contained in just to the silicon photocell in front, body of heater center, Control for Kiln Temperature connection control heater.
Also be connected with electro connecting pressure gauge in described water-cooling system, it is in parallel that electro connecting pressure gauge and every bar prop up valve bypass line, and connect digital multimeter by circuit.
In described water-cooling system, every bar props up valve place branch road and is provided with view window.
In described water-cooling system, the cooling pipeline of silicon photocell is also to the cooling of controllable silicon actuator, and controllable silicon actuator is connected to Control for Kiln Temperature and connects in the control circuit of heater, and Control for Kiln Temperature controls heater by controllable silicon actuator.
Described calibration thermopair software visualbasic language is with reference to JJF1262-2010 " armoured thermocouple calibrating standard " establishment.
Beneficial effect of the present invention is: can realize the vacuum correction to tungsten protection tube high temperature armoured thermocouple; application of the present invention can fill up this field domestic blank; and calibration detectability and the service range of national defence 5212 secondary test satellite location can be expanded; thus obtain good Social benefit and economic benefit, most importantly for defence and military scientific research, produce and provide new technical testing means and Metrology Support.
Accompanying drawing explanation
Fig. 1 is the structural representation of body of heater in the present invention;
Fig. 2 is the connection diagram of water-cooling system in the present invention;
Fig. 3 is the connection diagram of control system in the present invention;
Fig. 4 is a kind of use-pattern schematic flow sheet of the present invention;
In figure: 11-water cooled furnace body, 12-end cap flange, the fire-resistant ring flange of 13-, 14-active joint, 15-exhaust tube, 16-quartz window, 21-aiming target, 22-heater, graphite cannula bucket in 23-, the outer graphite cannula bucket of 24-, 25-carbon fiber, 26-insulation fibre, 31-water inlet pipe and water outlet pipe, 32-water cooled electrode, 33-guide ring, 41-view window, 42-main valve, 43-props up valve, 44-electro connecting pressure gauge, 101-computing machine, 102-calibrates thermopair software, 103-printer, 104-display, 201-control interface, 202-scanning switch, 203-digital multimeter, 204-hyperchannel terminal box, 205-Control for Kiln Temperature, 301-temperature measuring device.
Embodiment
Further describe technical scheme of the present invention below, but described in claimed scope is not limited to.
A kind of tungsten protection tube high temperature armoured thermocouple vacuum correction device as shown in Figure 1 to Figure 3, comprises body of heater, water-cooling system, control system;
Described body of heater is made up of water cooled furnace body 11, water cooled furnace body 11 is cylindric, water cooled furnace body 11 two ends are by end cap flange 12 removable seal, the centre bit of body of heater heating tube is equipped with aiming target 21, aiming target 21 both sides are oppositely arranged symmetrical heater 22 along water cooled furnace body 11 coaxial direction, aiming target 21, heater 22 is outer is enclosed with interior graphite cannula bucket 23 successively, outer graphite cannula bucket 24, carbon fiber 25, insulation fibre 26, interior graphite cannula bucket 23, outer graphite cannula bucket 24, carbon fiber 25, insulation fibre 26 is defined in the middle part of water cooled furnace body 11 inner chamber by the fire-resistant ring flange 13 at heater 22 two ends, heater 22 end winding support is on active joint 14, active joint 14 is fixed on two ends in water cooled furnace body 11 furnace shell, the end of water cooled furnace body 11 is also provided with exhaust tube 15 and quartz window 16, guide ring 33 is set in the housing of water cooled furnace body 11, guide ring 33 pipeline communication is in the water inlet pipe and water outlet pipe 31 being arranged on water cooled furnace body 11 end, water cooled furnace body 11 center is also provided with the silicon photocell for temperature-sensitive,
The pipeline that described water-cooling system is dispelled the heat by a main valve 42 and multiple the heat absorptions of valve 43 channeling, roads, many the corresponding pipelines of heat absorption pipelines difference of multiple valve 43 correspondences connect the cooling pipeline of water cooled furnace body 11 and silicon photocell, electro connecting pressure gauge 44 is also connected with in water-cooling system, it is in parallel that electro connecting pressure gauge 44 and every bar prop up valve 43 bypass line, and connect digital multimeter 203 by circuit;
Described control system core is computing machine 101, installation calibrating thermopair software 102 (being mainly used in AI artificial intelligence regulating) in computing machine 101, and computing machine 101 connects printer 103 and display 104, computing machine 101 is also connected with control interface 201, scanning switch 202 and digital multimeter 203, control interface 201 connects Control for Kiln Temperature 205, scanning switch 202 connecting multi-channel terminal box 204, Control for Kiln Temperature 205 is all connected temperature measuring device 301 with hyperchannel terminal box 204, temperature measuring device 301 comprises and is contained in tested thermopair in aiming target 21 and is contained in just to the silicon photocell in front, body of heater center, Control for Kiln Temperature 205 connection control heater 22.
Also be connected with electro connecting pressure gauge 44 in described water-cooling system, it is in parallel that electro connecting pressure gauge 44 and every bar prop up valve 43 bypass line, and connect digital multimeter 203 by circuit.
In described water-cooling system, every bar props up valve 43 place branch road and is provided with view window 41.
In described water-cooling system, the cooling pipeline of silicon photocell is also to the cooling of controllable silicon actuator, and controllable silicon actuator is connected to Control for Kiln Temperature 205 and connects in the control circuit of heater 22, and Control for Kiln Temperature 205 controls heater 22 by controllable silicon actuator.
Described calibration thermopair software 102 visualbasic language is worked out with reference to JJF1262-2010 " armoured thermocouple calibrating standard ", this calibration thermopair software 102 all can run in the operating system of more than WindowsXP version, can automatically identify and digital versatile list catenation, and compatible various connected mode, the passage of scanning can be set, sensor type, scanning the parameter such as time interval, also can specific data store path, after setting sweep parameter, system can complete intensification by automaton, constant temperature, data acquisition, store, calculate, provide the overall processes such as result.
Thus, with silicon photocell as temperature control detecting element, temperature in furnace is input in calibration thermopair software 102 through silicon photocell generation mV signal and sets mV value and compares, calibration thermopair software 102 automatically exports SCR trigger pulse and promotes controllable silicon actuator, change output voltage size, control the intensification electric current of heater 22 to arrive the object of accurate temperature control.The setting mV value of calibration thermopair software 102 can set automatically, also can manually set.
As shown in Figure 4, when the present invention uses, on the whole, only need to load tested thermopair, then ensure that each assembly connects normal and starts successively, processing ease.
Measurement range of the present invention: temperature 800 DEG C ~ 2300 DEG C, expanded uncertainty: U=3.2 DEG C k=2.
Claims (5)
1. a tungsten protection tube high temperature armoured thermocouple vacuum correction device, comprise body of heater, water-cooling system, control system, it is characterized in that: described body of heater is water cooled furnace body (11) structure, water cooled furnace body (11) is cylindric, water cooled furnace body (11) two ends are by end cap flange (12) removable seal, the center of body of heater heating tube is provided with aiming target (21), aiming target (21) both sides are oppositely arranged symmetrical heater (22) along water cooled furnace body (11) coaxial direction, heater (22) is enclosed with interior graphite cannula bucket (23) outward successively, outer graphite cannula bucket (24), carbon fiber (25), insulation fibre (26), interior graphite cannula bucket (23), outer graphite cannula bucket (24), carbon fiber (25), it is inner that insulation fibre (26) is defined in water cooled furnace body (11) by the fire-resistant ring flange (13) at heater (22) two ends, heater (22) end winding support is on active joint (14), active joint (14) is fixed on water cooled furnace body (11) end, the end of water cooled furnace body (11) is also provided with exhaust tube (15) and quartz window (16), guide ring (33) is set in the housing of water cooled furnace body (11), guide ring (33) pipeline communication is in the water inlet pipe and water outlet pipe (31) being arranged on water cooled furnace body (11) end, just the silicon photocell for observing and controlling Wen Wen is also provided with to front, body of heater center, the pipeline that described water-cooling system is dispelled the heat by a main valve (42) and multiple the heat absorptions of valve (43) channeling, roads, many corresponding pipelines connection water cooled furnace body (11) of heat absorption pipelines difference of multiple valve (43) correspondences and the cooling pipeline of silicon photocells, described control system core is computing machine (101), installation calibrating thermopair software (102) in computing machine (101), and computing machine (101) connects printer (103) and display (104), computing machine (101) is also connected with control interface (201), scanning switch (202) and digital multimeter (203), control interface (201) connects Control for Kiln Temperature (205), scanning switch (202) connecting multi-channel terminal box (204), Control for Kiln Temperature (205) is all connected temperature measuring device (301) with hyperchannel terminal box (204), observing and controlling temperature device (301) comprises the standard couple being contained in body of heater center, tested thermopair and be contained in just to the silicon photocell in front, body of heater center, Control for Kiln Temperature (205) connection control heater (22).
2. tungsten protection tube high temperature armoured thermocouple vacuum correction device as claimed in claim 1; it is characterized in that: in described water-cooling system, be also connected with electro connecting pressure gauge (44); it is in parallel that electro connecting pressure gauge (44) and every bar prop up valve (43) bypass line, and connect digital multimeter (203) by circuit.
3. tungsten protection tube high temperature armoured thermocouple vacuum correction device as claimed in claim 1, it is characterized in that: in described water-cooling system, every bar props up valve (43) place branch road and is provided with view window (41).
4. tungsten protection tube high temperature armoured thermocouple vacuum correction device as claimed in claim 1; it is characterized in that: in described water-cooling system; the cooling pipeline of silicon photocell is also lowered the temperature to controllable silicon actuator; controllable silicon actuator is connected to Control for Kiln Temperature (205) and connects in the control circuit of heater (22), and Control for Kiln Temperature (205) controls heater (22) by controllable silicon actuator.
5. tungsten protection tube high temperature armoured thermocouple vacuum correction device as claimed in claim 1, is characterized in that: described calibration thermopair software (102) is worked out with reference to JJF1262-2010 " armoured thermocouple calibrating standard " with visualbasic language.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510893440.9A CN105333976A (en) | 2015-12-07 | 2015-12-07 | Tungsten-molybdenum protective tube high-temperature sheathed thermocouple vacuum calibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510893440.9A CN105333976A (en) | 2015-12-07 | 2015-12-07 | Tungsten-molybdenum protective tube high-temperature sheathed thermocouple vacuum calibration device |
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| CN105333976A true CN105333976A (en) | 2016-02-17 |
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| CN201510893440.9A Pending CN105333976A (en) | 2015-12-07 | 2015-12-07 | Tungsten-molybdenum protective tube high-temperature sheathed thermocouple vacuum calibration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107884094A (en) * | 2017-10-31 | 2018-04-06 | 北京航天计量测试技术研究所 | A kind of special-shaped high temperature sensor and calibration method |
| CN108562378A (en) * | 2018-03-30 | 2018-09-21 | 中国计量科学研究院 | A kind of device of temperature correction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884094A (en) * | 2017-10-31 | 2018-04-06 | 北京航天计量测试技术研究所 | A kind of special-shaped high temperature sensor and calibration method |
| CN108562378A (en) * | 2018-03-30 | 2018-09-21 | 中国计量科学研究院 | A kind of device of temperature correction |
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Application publication date: 20160217 |