CN108593127B - Thermocouple point distribution tool and point distribution method - Google Patents
Thermocouple point distribution tool and point distribution method Download PDFInfo
- Publication number
- CN108593127B CN108593127B CN201810688363.7A CN201810688363A CN108593127B CN 108593127 B CN108593127 B CN 108593127B CN 201810688363 A CN201810688363 A CN 201810688363A CN 108593127 B CN108593127 B CN 108593127B
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- thermocouple
- main rod
- blind hole
- winding main
- temperature measuring
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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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a thermocouple point distribution tool which comprises a winding main rod and a handle, wherein the rear end of the winding main rod is inserted into the handle, the front end of the winding main rod is provided with an axially extending blind hole, the front end opening part of the blind hole is provided with a strip-shaped rotary notch which is parallel to the axis of the main rod and communicated with the blind hole, the width W of the rotary notch is larger than the diameter of a thermocouple conducting wire, and the difference between the depth L1 of the blind hole and the length L2 of the rotary notch is larger than the length of a thermocouple front end temperature measuring point. Meanwhile, the invention also provides a thermocouple point distribution method by using the thermocouple point distribution tool. The tool can effectively isolate and protect the temperature measuring points of the laid thermocouples, and avoid redundant temperature interference caused by contact between the temperature measuring points and unnecessary non-measuring points, thereby affecting the accuracy of temperature acquisition data; and the temperature measuring point is formed quickly and conveniently, so that the work efficiency of point distribution is greatly improved.
Description
Technical Field
The invention relates to the technical field of thermocouple point distribution, in particular to a point distribution tool of a thermocouple and a point distribution method by using the point distribution tool of the thermocouple.
Background
Before the automobile is subjected to a thermal environment wind tunnel test, thermocouples (the thermocouples are one type of temperature sensors) are required to be distributed on an engine compartment, a passenger compartment and the like of the automobile, and the temperature of the upper surface of the automobile, the temperature of fluid in a pipeline and the temperature of air in a local area are acquired through the temperature measuring points of the thermocouples. The existing point distribution method generally directly arranges thermocouple contact points at the detected positions without corresponding protective isolation measures. The objective disadvantages of this approach are: (1) affecting the accuracy of temperature acquisition data; and (2) the use is inconvenient, and the point distribution efficiency is low.
In general, two conditions affect the accuracy of the temperature acquisition data in the test process. First case: the automobile wind tunnel environment simulation test simulates the running wind speed, the thermocouples are arranged in the flow field, the air flow shakes the thermocouples, the air flow disturbs the thermocouples, the temperature measuring points are contacted with objects with non-measuring points, and the transmitted temperature is interfered, so that the accuracy of temperature acquisition is improved. Second case: when the temperature of the liquid in the pipeline is collected, the thermocouple is arranged in the pipeline to be in contact with the liquid for temperature collection. When in test, the vehicle starts to simulate the road surface to run, and the liquid in the pipeline of the whole system circularly flows to enable the thermocouple in the pipeline to generate displacement. The thermocouple temperature measuring point is contacted with the pipe wall, and temperature transmission is generated, so that the accuracy of temperature acquisition is affected. The reason for this is that the temperature measuring point of the thermocouple is exposed, and is in contact with a non-measuring point, so that the accuracy of temperature acquisition data is affected.
Disclosure of Invention
Based on the above, the invention aims to provide a point distribution tool special for thermocouples, which can effectively isolate and protect the temperature measuring points of the thermocouples after arrangement, and avoid redundant temperature interference caused by the contact between the temperature measuring points and unnecessary non-measuring points, thereby affecting the accuracy of temperature acquisition data; and the temperature measuring point is formed quickly and conveniently, so that the work efficiency of point distribution is greatly improved.
The technical scheme adopted by the invention is as follows: the utility model provides a thermocouple instrument of laying out, includes coiling mobile jib and handle, the rear end of coiling mobile jib inserts in the handle, and open the front end of coiling mobile jib has the blind hole of axial extension, the front end oral area of blind hole open have with mobile jib axis parallel and with the communicating rectangular rotatory lack groove of blind hole, rotatory lack groove's width W is greater than thermocouple wire's diameter, the degree of depth L1 of blind hole and the length L2 difference of rotatory lack groove are greater than thermocouple front end temperature measurement station's length.
As the preference of above-mentioned scheme, coiling mobile jib adopts stainless steel to make, and the main part is the cylinder pole, and the rear end of cylinder pole has the cross section to be square and prevents changeing the section, the handle is wooden handle, is provided with on wooden handle with prevent changeing the section matched prevent changeing the hole, and prevent changeing section and prevent changeing hole interference fit. The wooden handle is adopted, so that the holding comfort is improved; the wooden handle is connected with the winding main rod by adopting an anti-rotation structure, so that the wooden handle and the winding main rod can be effectively prevented from rotating relatively in the use process.
Further, a limit step or a limit scratch is arranged on the winding main rod, and the limit step or the limit scratch is located at the position 2-3 mm behind the blind hole. The limit steps or limit scratches are added, the thermocouple conducting wires are wound to the limit steps or limit scratches from front to back along the winding main rod, and the operation is more convenient and accurate.
Further, the width W of the rotary notch is 1.5mm, the length L2 is 5mm, and the difference between the depth L1 of the blind hole and the length L2 of the rotary notch is 7-10 mm.
Meanwhile, the invention also provides a thermocouple point distribution method by using the thermocouple point distribution tool, which comprises the following steps:
the method comprises the steps that firstly, a temperature measuring point at the front end of a thermocouple is inserted into a blind hole of a winding main rod until the temperature measuring point at the front end of the thermocouple is in contact with the bottom of the blind hole, and the temperature measuring point at the front end of the thermocouple is completely arranged in the blind hole;
bending a conducting wire of the thermocouple close to the front-end temperature measuring point out of the winding main rod through a rotary notch, enabling the conducting wire of the thermocouple to be tangent to the outer diameter of the winding main rod after being bent at 90 degrees with the winding main rod, pressing the position of the conducting wire of the thermocouple tangent to the bending position of the winding main rod by one hand, keeping the conducting wire of the thermocouple attached to the outer wall of the winding main rod, holding the handle by one hand, and winding the conducting wire of the thermocouple into a spiral section from front to back along the winding main rod until the length of the spiral section is larger than the length of the temperature measuring point of the front end of the thermocouple extending into the blind hole;
thirdly, pushing the spiral section of the thermocouple from back to front to withdraw the thermocouple from the thermocouple spotting tool.
As the preferable of the scheme, the winding main rod is provided with the limit step or the limit scratch, the limit step or the limit scratch is positioned at the position 2-3 mm behind the blind hole, and the thermocouple conducting wire is wound to the limit step or the limit scratch from front to back along the winding main rod.
The invention has the beneficial effects that: the front end temperature measuring point of the thermocouple after coiling and forming is surrounded by the thermocouple conducting wire and is always in the center position, so that redundant temperature interference caused by contact between the front end temperature measuring point and a non-measuring point during data acquisition is avoided, an effective isolation protection effect is achieved on the front end temperature measuring point, and the accuracy and the reliability of temperature acquisition are ensured; and the forming is quick and convenient, and the work efficiency of distributing points is greatly improved.
Drawings
Fig. 1 is a perspective view of a thermocouple placement tool of the present invention.
Fig. 2 is a front view of the thermocouple placement tool of the present invention.
Fig. 3 is an enlarged view of the winding stem of fig. 1.
Fig. 4 is a partial schematic view of the thermocouple after coil forming.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-3, a thermocouple point distribution tool mainly comprises a winding main rod 1 and a handle 2.
The rear end of the winding main rod 1 is inserted into the handle 2, and the handle 2 is arranged, so that an operator can conveniently hold the winding main rod. The front end of the winding main rod 1 is provided with an axially extending blind hole 1a, and the front end opening part of the blind hole 1a is provided with a strip-shaped rotary notch 1b which is parallel to the axis of the main rod 1 and is communicated with the blind hole 1 a. The width W of the rotary slot 1b is greater than the diameter of the thermocouple wire to ensure that the thermocouple wire can pass out through the rotary slot 1b. The difference between the depth L1 of the blind hole 1a and the length L2 of the rotary notch 1b is larger than the length of the temperature measuring point at the front end of the thermocouple so as to ensure that the temperature measuring point at the front end can be completely placed in the blind hole 1 a.
Preferably, the winding main rod 1 is made of stainless steel, the main body is a cylindrical rod, and the rear end of the cylindrical rod is provided with an anti-rotation section 1c with a square cross section. The handle 2 is a wooden handle, an anti-rotation hole 2a matched with the anti-rotation section 1c is formed in the wooden handle, and the anti-rotation section 1c is in interference fit with the anti-rotation hole 2 a.
In addition, be provided with spacing step or spacing mar (not shown in the figure) on the coiling mobile jib 1, spacing step or spacing mar is located blind hole 1a rear 2-3 mm position department, and thermocouple conducting wire is by the spiral section of forward back winding into along coiling mobile jib 1, and it is suitable to be about surpassed thermocouple front end temperature measurement point 3 circles, the length of the spiral section that the thermocouple conducting wire of being convenient for accurate control twines into ensures the best protection state to thermocouple front end temperature measurement point 3, can avoid the too long inconvenient arrangement of spiral section simultaneously again, and it is also more convenient to operate.
Preferably, the width W of the rotary notch 1b is 1.5mm, the length L2 is 5mm, and the difference between the depth L1 of the blind hole 1a and the length L2 of the rotary notch 1b is 7 to 10mm, but the present invention is not limited thereto.
The thermocouple point distribution method by using the thermocouple point distribution tool comprises the following steps:
the first step, the temperature measuring point at the front end of the thermocouple is inserted into the blind hole 1a of the winding main rod 1 until the temperature measuring point at the front end of the thermocouple contacts with the bottom of the blind hole 1a, and the temperature measuring point at the front end of the thermocouple is completely arranged in the blind hole 1 a.
And secondly, bending a conducting wire of the thermocouple close to the front end temperature measuring point out of the winding main rod 1 through the rotary notch 1b, enabling the conducting wire of the thermocouple to be tangent to the outer diameter of the winding main rod 1 after being bent by 90 degrees with the winding main rod 1, pressing the position of the conducting wire of the thermocouple tangent to the bending position of the winding main rod 1 by one hand, keeping the conducting wire of the thermocouple attached to the outer wall of the winding main rod 1, holding the handle 2 by one hand and rotating for a plurality of circles, enabling the conducting wire of the thermocouple to be wound into a spiral section along the winding main rod 1 from front to back until the length of the spiral section is larger than the length of the thermocouple, extending into the blind hole 1a, of the front end temperature measuring point of the thermocouple.
Thirdly, pushing the spiral section of the thermocouple from back to front to withdraw the thermocouple from the thermocouple spotting tool.
Preferably, the winding main rod 1 is provided with a limit step or limit scratch, the limit step or limit scratch is positioned at the position 2-3 mm behind the blind hole 1a, and the thermocouple conducting wire is wound to the limit step or limit scratch from front to back along the winding main rod 1.
As shown in fig. 4, the front end temperature measuring point a of the thermocouple after being rolled is always located at the central position by the conducting wire B of the thermocouple, and has an effective isolation protection effect on the front end temperature measuring point a.
Claims (4)
1. A thermocouple point distribution instrument, its characterized in that: the thermocouple comprises a winding main rod (1) and a handle (2), wherein the rear end of the winding main rod (1) is inserted into the handle (2), a blind hole (1 a) extending axially is formed in the front end of the winding main rod (1), a strip-shaped rotary notch (1 b) which is parallel to the axis of the main rod (1) and communicated with the blind hole (1 a) is formed in the front end opening part of the blind hole (1 a), the width W of the rotary notch (1 b) is larger than the diameter of a thermocouple conducting wire, and the difference between the depth L1 of the blind hole (1 a) and the length L2 of the rotary notch (1 b) is larger than the length of a temperature measuring point at the front end of the thermocouple;
the winding main rod (1) is made of stainless steel, the main body is a cylindrical rod, the rear end of the cylindrical rod is provided with an anti-rotation section (1 c) with a square cross section, the handle (2) is a wooden handle, an anti-rotation hole (2 a) matched with the anti-rotation section (1 c) is formed in the wooden handle, and the anti-rotation section (1 c) is in interference fit with the anti-rotation hole (2 a);
the width W of the rotary notch (1 b) is 1.5mm, the length L2 is 5mm, and the difference between the depth L1 of the blind hole (1 a) and the length L2 of the rotary notch (1 b) is 7-10 mm.
2. The thermocouple spotting tool of claim 1, wherein: the winding main rod (1) is provided with a limit step or a limit scratch, and the limit step or the limit scratch is positioned at the position 2-3 mm behind the blind hole (1 a).
3. A thermocouple placement method using the thermocouple placement tool according to claim 1 or 2, characterized by comprising the steps of:
firstly, inserting a thermocouple front end temperature measuring point into a blind hole (1 a) of a winding main rod (1) until the thermocouple front end temperature measuring point contacts with the bottom of the blind hole (1 a), wherein the thermocouple front end temperature measuring point is completely arranged in the blind hole (1 a);
bending a conducting wire of the thermocouple close to the front end temperature measuring point out of the winding main rod (1) through a rotary notch (1 b), enabling the conducting wire of the thermocouple to be tangent to the outer diameter of the winding main rod (1) after being bent at 90 degrees with the winding main rod (1), pressing the position of the conducting wire of the thermocouple at the tangent bending position by one hand, keeping the conducting wire of the thermocouple attached to the outer wall of the winding main rod (1), holding a handle (2) by one hand, rotating for a plurality of circles, and winding the conducting wire of the thermocouple into a spiral section along the winding main rod (1) from front to back until the length of the spiral section is larger than the length of the thermocouple, of which the front end temperature measuring point extends into a blind hole (1 a);
thirdly, pushing the spiral section of the thermocouple from back to front to withdraw the thermocouple from the thermocouple spotting tool.
4. A thermocouple spotting method in accordance with claim 3, characterized in that: the winding main rod (1) is provided with a limiting step or a limiting scratch, the limiting step or the limiting scratch is positioned at the position 2-3 mm behind the blind hole (1 a), and the thermocouple conducting wire is wound to the limiting step or the limiting scratch from front to back along the winding main rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810688363.7A CN108593127B (en) | 2018-06-28 | 2018-06-28 | Thermocouple point distribution tool and point distribution method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810688363.7A CN108593127B (en) | 2018-06-28 | 2018-06-28 | Thermocouple point distribution tool and point distribution method |
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| CN108593127A CN108593127A (en) | 2018-09-28 |
| CN108593127B true CN108593127B (en) | 2023-07-28 |
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| CN201810688363.7A Active CN108593127B (en) | 2018-06-28 | 2018-06-28 | Thermocouple point distribution tool and point distribution method |
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| CN109632120A (en) * | 2019-02-26 | 2019-04-16 | 山东建筑大学 | A method of fixing thermocouple into steel structure member |
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| CN102589736A (en) * | 2011-01-05 | 2012-07-18 | 中国科学院沈阳自动化研究所 | Detection method and detection system for metal powder laser rapidly-molded temperature field |
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| CN203285426U (en) * | 2013-01-25 | 2013-11-13 | 中国石油天然气股份有限公司 | Underground ultra-long thermocouple multipoint distribution structure and outer tube protection structure |
| CN205373901U (en) * | 2016-01-06 | 2016-07-06 | 青岛海尔（胶州）空调器有限公司 | Thermocouple fixing device that layouts |
| CN208383325U (en) * | 2018-06-28 | 2019-01-15 | 中国汽车工程研究院股份有限公司 | Thermocouple is layouted tool |
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2018
- 2018-06-28 CN CN201810688363.7A patent/CN108593127B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074646A (en) * | 1992-01-20 | 1993-07-28 | 标准模具有限公司 | The injection molding probe that has coaxial thermocouple tube and heating element heater |
| JP2003098013A (en) * | 2001-09-20 | 2003-04-03 | Hamada Heavy Industries Ltd | Thermocouple and temperature sensor |
| CN1480717A (en) * | 2003-07-31 | 2004-03-10 | 大连理工大学 | Multipoint thermocouple transducer |
| CN2869817Y (en) * | 2006-01-27 | 2007-02-14 | 张克理 | Thermalelectric coupling compensation lead reeling-up device |
| CN101738265A (en) * | 2008-11-17 | 2010-06-16 | 北京卫星环境工程研究所 | Winding and unwinding tool for adhering thermoelectric couple in spacecraft vacuum thermal test |
| CN102589736A (en) * | 2011-01-05 | 2012-07-18 | 中国科学院沈阳自动化研究所 | Detection method and detection system for metal powder laser rapidly-molded temperature field |
| CN202420705U (en) * | 2011-12-28 | 2012-09-05 | 申雅密封件有限公司 | Multi-point armored thermocouple device with protection pipe |
| CN203285426U (en) * | 2013-01-25 | 2013-11-13 | 中国石油天然气股份有限公司 | Underground ultra-long thermocouple multipoint distribution structure and outer tube protection structure |
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| CN208383325U (en) * | 2018-06-28 | 2019-01-15 | 中国汽车工程研究院股份有限公司 | Thermocouple is layouted tool |
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