CN113834579A - Constant temperature field collection system is used in verification of double-needle type thermocouple - Google Patents
Constant temperature field collection system is used in verification of double-needle type thermocouple Download PDFInfo
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- CN113834579A CN113834579A CN202111109018.1A CN202111109018A CN113834579A CN 113834579 A CN113834579 A CN 113834579A CN 202111109018 A CN202111109018 A CN 202111109018A CN 113834579 A CN113834579 A CN 113834579A
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- 238000012795 verification Methods 0.000 title claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000009659 non-destructive testing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Classifications
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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
-
- 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
Abstract
The invention discloses a constant-temperature field acquisition device for verifying a double-needle type thermocouple, which comprises a fixed plate and an acquisition tube, wherein the fixed plate comprises an upper fixed plate and a lower fixed plate which are connected through a screw rod, a central hole is formed in the upper fixed plate, an aluminum plate is arranged on the lower fixed plate corresponding to the central hole, the acquisition tube for placing the double-needle type thermocouple is arranged between the central hole and the aluminum plate, and jacks are uniformly distributed in the upper fixed plate and the lower fixed plate; the collecting pipe is a hollow cylindrical collecting pipe which is communicated up and down, the diameter of the central hole is matched with the outer diameter of the collecting pipe, and the inner wall of the central hole is in sliding connection with the outer wall of the collecting pipe; the diameter of the aluminum plate is larger than the outer diameter of the collecting pipe, the lower end face of the collecting pipe is connected with the upper end face of the aluminum plate, and sealing rings are arranged at the joint of the collecting pipe and the upper end face of the upper fixed plate and at the joint of the collecting pipe and the aluminum plate. The invention can prevent oil products from entering the double-needle type thermocouple, thereby realizing the purpose of nondestructive testing.
Description
Technical Field
The invention relates to a thermocouple calibration device, in particular to a constant-temperature field acquisition device for double-needle type thermocouple calibration.
Background
In an aluminum deep processing unit, when temperature process control is performed on finished products such as hot-rolled coils, cold-rolled coils and the like, a double-needle type thermocouple is needed for contact temperature measurement, when laboratory inspection is performed on the thermocouple, because the anode and the cathode of the thermocouple adopt an open circuit design, manual pressure needs to be applied to two terminals of a thermocouple measuring end during contact temperature measurement, and springs attached to the two terminals deform, so that sufficient contact is realized, and the purpose of measuring temperature is achieved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the temperature of the constant-temperature field can be accurately measured, oil is prevented from entering the double-needle type thermocouple, and the constant-temperature field acquisition device for the double-needle type thermocouple calibration is used for realizing nondestructive calibration.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a two needle type thermocouple examination are with constant temperature field collection system, includes fixed plate and collection pipe, the fixed plate includes upper fixed plate and bottom plate, the upper fixed plate with connect through the screw rod between the bottom plate, be provided with the centre bore on the upper fixed plate, on the bottom plate with the centre bore corresponds the department and is provided with aluminum plate, the centre bore with be provided with between the aluminum plate and be used for placing two needle type thermocouples collection pipe, the upper fixed plate with equal equipartition has the jack that is used for placing standard thermocouple and temperature control thermocouple on the bottom plate.
The collecting pipe is a hollow cylindrical collecting pipe which is communicated up and down, the diameter of the central hole is matched with the outer diameter of the collecting pipe, the inner wall of the central hole is in sliding connection with the outer wall of the collecting pipe, and the upper end face of the collecting pipe is flush with or exceeds the upper end face of the upper fixing plate; and a first sealing ring is arranged at the joint of the collecting pipe and the upper end surface of the upper fixing plate.
The diameter of the aluminum plate is larger than the outer diameter of the collecting pipe, the lower end face of the collecting pipe is connected with the upper end face of the aluminum plate, and a second sealing ring is arranged at the joint of the collecting pipe and the aluminum plate.
The collecting tube is a transparent collecting tube made of quartz glass.
The jacks on the upper fixing plate are uniformly distributed on the circumference of the central hole, the jacks on the lower fixing plate are uniformly distributed on the circumference of the aluminum plate, and the jacks on the upper fixing plate and the jacks on the lower fixing plate are arranged in an up-and-down symmetrical mode.
The upper end of the screw penetrates out of the upper end face of the upper fixing plate, and the upper end face and the lower end face of the upper fixing plate are fixed through two nuts; the lower end of the screw rod penetrates out of the lower end face of the lower fixing plate, and the upper end face and the lower end face of the lower fixing plate are fixed through another two nuts.
The screw rod is provided with three, the equipartition is in between upper fixed plate and the bottom plate.
And a portable handle convenient to hold is further arranged on the upper end face of the upper fixing plate.
The thickness of the aluminum plate is 0.5-1 mm.
The inner diameter of the quartz glass tube is 30-50mm, the thickness of the tube wall is 1-2mm, and the upper and lower ports are horizontal sections, so that a better sealing function can be realized.
The upper fixing plate and the lower fixing plate are both made of stainless steel.
The invention has the following positive beneficial effects:
1. the collection pipe is the quartz glass pipe of transparent high temperature resistance in this device, and is provided with the sealing washer between the lower terminal surface of collection pipe and the aluminum plate and between the up end of collection pipe and upper fixed plate, form and seal the connection, can play the effect of oil in the isolation oil groove, the upper end of collection pipe is open type structure, the double-needle thermocouple gets into in the collection pipe from the open end, play and hinder oil, insulating, the effect of passageway, stop inside the oil gets into the double-needle thermocouple, realize the purpose of harmless examination.
2. Inside the collection pipe in this device, two needle type terminals on the double-needle type thermocouple all are connected with the aluminum plate of collection socle portion, realize opening a way of double-needle type thermocouple and become closed, this device is directly arranged in oil groove constant temperature field again, and the double-needle type thermocouple after the closure can the temperature of accurate measurement constant temperature field, compares with the detection temperature on the standard thermocouple in the jack, carries out accurate regulation and control to the temperature of constant temperature field, can reach the fluctuation +/-0.6 ℃ within 6min of constant temperature field before measuring, and the 60 seconds temperature fluctuation is less than +/-0.2 ℃ before the sampling, does benefit to the examination.
3. The screw rod is gone up and all utilizes the nut to fix with fixed class and bottom plate junction in this device to the upper and lower both ends of screw rod pierce through fixed class and bottom plate respectively, and the pipe is highly different probably to the collection of difference, highly different at the collection pipe, can utilize screw rod and nut to adjust the distance between fixed class and the bottom plate according to the height of gathering the pipe, and application scope is wide.
Drawings
Fig. 1 is a schematic structural diagram of a constant temperature field acquisition device for a double-needle thermocouple calibration according to the present invention.
Detailed Description
The invention will be further explained and explained with reference to the drawings and the specific embodiments:
referring to fig. 1: in the figure, 1-an upper fixing plate, 2-a lower fixing plate, 3-a screw rod, 4-a nut, 5-a central hole, 6-an aluminum plate, 7-a collecting pipe, 8-a first sealing ring, 9-a jack, 10-a handle and 11-a second sealing ring.
Example (b): the constant temperature field acquisition device for verifying the double-needle type thermocouple is manufactured by adopting a simulated production field environment method in combination with the national verification regulation requirements of JJF1637-2017 'calibration standard for cheap metal thermocouples', and the device is specially designed for being matched with a laboratory to adopt a method for verifying the double-needle type thermocouple by using a methyl silicone oil constant temperature bath and can be placed in a constant temperature oil tank.
The concrete structure comprises a fixing plate and a collecting pipe 7, wherein the fixing plate comprises an upper fixing plate 1 and a lower fixing plate 2, the upper fixing plate 1 is connected with the lower fixing plate 2 through three screws 3, the three screws 3 are uniformly distributed between the upper fixing plate 1 and the lower fixing plate 2, the upper ends of the screws 3 penetrate through the upper end face of the upper fixing plate 1, and the upper end face and the lower end face of the upper fixing plate 1 are respectively fixed by a nut 4; the lower end of the screw rod 3 penetrates out of the lower end face of the lower fixing plate 2, and the upper end face and the lower end face of the lower fixing plate 2 are respectively fixed by the other nuts 4, the screw rod 3 is connected with the upper fixing plate 1 and the lower fixing plate 2, the screw rod 3 penetrates through the upper fixing plate and the lower fixing plate 2 because the screw rod 3 and the nuts 4 are movable, different collecting pipes 7 are possibly different in height, when the collecting pipes 7 are different in height, the distance between the upper fixing plate and the lower fixing plate 2 can be adjusted by the screw rod 3 and the nuts 4 according to the height of the collecting pipes 7, and the application range is wide.
The central line department on the upper fixed plate 1 is provided with centre bore 5, the department that corresponds with centre bore 5 on the lower fixed plate 2 is provided with aluminum plate 6, be provided with between centre bore 5 and the aluminum plate 6 and be used for placing the collection pipe 7 of two needle type thermocouples, all the equipartition is equipped with the jack 9 that is used for placing standard thermocouple and control by temperature change thermocouple on upper fixed plate 1 and the lower fixed plate 2, jack 9 equipartition on the upper fixed plate 1 is at the 5 circumference of centre bore, jack 9 equipartition on the lower fixed plate 2 is at the circumference of aluminum plate 6, jack 9 on the upper fixed plate 1 and jack 9 on the lower fixed plate 2 are symmetry setting from top to bottom.
The collecting tube 7 is a hollow cylindrical collecting tube 7 which is through up and down, the diameter of the central hole 5 is matched with the outer diameter of the collecting tube 7, the inner wall of the central hole 5 is in sliding connection with the outer wall of the collecting tube 7, the upper end face of the collecting tube 7 is flush with the upper end face of the upper fixing plate 1 or exceeds the upper end face of the upper fixing plate 1, the upper end port of the collecting tube 7 is not closed and is of an open structure, the collecting tube 7 is a transparent collecting tube 7 made of quartz glass, and the double-needle type thermocouple enters the collecting tube 7 from the open end of the collecting tube 7 to play roles in blocking oil, insulating and passing.
The diameter of the aluminum plate 6 is larger than the outer diameter of the collecting pipe 7, the lower end face of the collecting pipe 7 is connected with the upper end face of the aluminum plate 6, a first sealing ring 8 is arranged at the joint of the collecting pipe 7 and the upper end face of the upper fixing plate 1, a second sealing ring 11 is arranged at the joint of the collecting pipe 7 and the aluminum plate 6 to form a closed connection, the effect of isolating oil in an oil groove can be achieved, and the thickness of the aluminum plate 6 is 0.5-1 mm.
Still set up convenient handheld handle 10 on the up end of upper fixed plate 1, and upper fixed plate 1 and bottom plate 2 all adopt the stainless steel preparation.
During operation, the device is directly placed in a constant temperature field of an oil tank by holding the hand handle 10, the end with the aluminum plate 6 is positioned at the bottom, the standard thermocouple and the temperature control thermocouple are inserted into the jack 9, the double-needle thermocouple is placed in the collection pipe 7, the double poles of the double-needle thermocouple are all contacted with the aluminum plate 6, the standard thermocouple, the temperature control thermocouple and the double-needle thermocouple are all connected to a thermocouple verification system for precise temperature control, after regulation and control, the fluctuation within 6min of the constant temperature field before measurement can be +/-0.6 ℃, and the temperature fluctuation within 60s before sampling is less than +/-0.2 ℃, so that verification is realized.
After the device is adopted, the verification of the double-needle thermocouple with the specification size of phi (15-25) mm, L = (200-.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (7)
1. The utility model provides a double needle formula thermocouple examination is with constant temperature field collection system, includes fixed plate and collection pipe, characterized by: the fixed plate comprises an upper fixed plate and a lower fixed plate, the upper fixed plate is connected with the lower fixed plate through a screw, a central hole is formed in the upper fixed plate, an aluminum plate is arranged at the position, corresponding to the central hole, of the lower fixed plate, the central hole is formed in the aluminum plate, the collection tube is used for placing the double-needle type thermocouple, and jacks are uniformly distributed in the upper fixed plate and the lower fixed plate.
2. The constant-temperature field acquisition device for the verification of the double-needle thermocouple according to claim 1, which is characterized in that: the collecting pipe is a hollow cylindrical collecting pipe which is communicated up and down, the diameter of the central hole is matched with the outer diameter of the collecting pipe, the inner wall of the central hole is in sliding connection with the outer wall of the collecting pipe, the upper end face of the collecting pipe is flush with or exceeds the upper end face of the upper fixing plate, and a first sealing ring is arranged at the joint of the collecting pipe and the upper end face of the upper fixing plate.
3. The constant-temperature field acquisition device for the verification of the double-needle thermocouple as claimed in claim 2, wherein: the diameter of the aluminum plate is larger than the outer diameter of the collecting pipe, the lower end face of the collecting pipe is connected with the upper end face of the aluminum plate, and a second sealing ring is arranged at the joint of the collecting pipe and the aluminum plate.
4. The constant-temperature field acquisition device for the verification of the double-needle thermocouple according to claim 3, which is characterized in that: the collecting tube is a transparent collecting tube made of quartz glass.
5. The constant-temperature field acquisition device for the verification of the double-needle thermocouple according to claim 1, which is characterized in that: the upper end of the screw rod penetrates through the upper end face of the upper fixing plate, and the upper end face and the lower end face of the upper fixing plate are fixed by utilizing a nut respectively; the lower end of the screw rod penetrates out of the lower end face of the lower fixing plate, and the upper end face and the lower end face of the lower fixing plate are fixed through additional nuts respectively.
6. The constant-temperature field acquisition device for the verification of the double-needle thermocouple according to claim 5, which is characterized in that: the screw rod is provided with three, the equipartition is in between upper fixed plate and the bottom plate.
7. The constant-temperature field acquisition device for the verification of the double-needle thermocouple according to claim 1, which is characterized in that: and a portable handle convenient to hold is further arranged on the upper end face of the upper fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111109018.1A CN113834579A (en) | 2021-09-22 | 2021-09-22 | Constant temperature field collection system is used in verification of double-needle type thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111109018.1A CN113834579A (en) | 2021-09-22 | 2021-09-22 | Constant temperature field collection system is used in verification of double-needle type thermocouple |
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|---|---|
| CN113834579A true CN113834579A (en) | 2021-12-24 |
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| CN202111109018.1A Pending CN113834579A (en) | 2021-09-22 | 2021-09-22 | Constant temperature field collection system is used in verification of double-needle type thermocouple |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036665U (en) * | 1988-07-28 | 1989-04-26 | 河北省计量测试研究所实验工厂 | Multipurpose thermostatic bath |
| JPH10111188A (en) * | 1996-10-08 | 1998-04-28 | Shimazu Kinzoku Kk | Automatic thermocouple calibration device |
| CN105092098A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业（集团）有限公司 | Double-graduation thermocouple and use method |
| CN109489864A (en) * | 2018-11-28 | 2019-03-19 | 贵州安吉航空精密铸造有限责任公司 | A kind of device for the calibration of cheap metal thermocouple calibration |
| CN208765873U (en) * | 2018-08-31 | 2019-04-19 | 华润电力登封有限公司 | A kind of bi-metal temperature meter checking device |
| CN210922897U (en) * | 2019-11-18 | 2020-07-03 | 天津市计量监督检测科学研究院 | Positioning support for testing temperature field of tube furnace under load condition |
| CN212779671U (en) * | 2020-09-02 | 2021-03-23 | 重庆迪洋仪表有限责任公司 | Fixing device for constant temperature bath |
-
2021
- 2021-09-22 CN CN202111109018.1A patent/CN113834579A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036665U (en) * | 1988-07-28 | 1989-04-26 | 河北省计量测试研究所实验工厂 | Multipurpose thermostatic bath |
| JPH10111188A (en) * | 1996-10-08 | 1998-04-28 | Shimazu Kinzoku Kk | Automatic thermocouple calibration device |
| CN105092098A (en) * | 2015-09-15 | 2015-11-25 | 沈阳飞机工业（集团）有限公司 | Double-graduation thermocouple and use method |
| CN208765873U (en) * | 2018-08-31 | 2019-04-19 | 华润电力登封有限公司 | A kind of bi-metal temperature meter checking device |
| CN109489864A (en) * | 2018-11-28 | 2019-03-19 | 贵州安吉航空精密铸造有限责任公司 | A kind of device for the calibration of cheap metal thermocouple calibration |
| CN210922897U (en) * | 2019-11-18 | 2020-07-03 | 天津市计量监督检测科学研究院 | Positioning support for testing temperature field of tube furnace under load condition |
| CN212779671U (en) * | 2020-09-02 | 2021-03-23 | 重庆迪洋仪表有限责任公司 | Fixing device for constant temperature bath |
Non-Patent Citations (1)
| Title |
|---|
| 党光英;: "热管恒温槽在发电机组温度检定中的应用", 宁夏电力, no. 06 * |
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