CN101858793B - Narrow gap weld seam temperature measuring device and method - Google Patents
Narrow gap weld seam temperature measuring device and method Download PDFInfo
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- CN101858793B CN101858793B CN2010101861372A CN201010186137A CN101858793B CN 101858793 B CN101858793 B CN 101858793B CN 2010101861372 A CN2010101861372 A CN 2010101861372A CN 201010186137 A CN201010186137 A CN 201010186137A CN 101858793 B CN101858793 B CN 101858793B
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Abstract
The invention discloses a narrow gap weld seam temperature measuring device and a narrow gap weld seam temperature measuring method. The device comprises a heat conducting block, a support compression spring, a temperature measuring element, and a temperature recording instrument, wherein the heat conducting block is arranged on the top of the support compression spring; an insulating layer is arranged between the heat conducting block and the support compression spring; and the temperature measuring element is connected with the heat conducting block and the temperature recording instrument respectively. The method comprises the following steps of: (1) cleaning the temperature measuring device, and polishing the heat conducting block which is contacted with a workpiece until red copper metal color appears; (2) cleaning the temperature measuring element to make a working end have no oxidation layer; (3) connecting the temperature measuring element with the heat conducting block; (4) placing the temperature measuring device into a temperature measuring point of the weld seam, and tightly adhering the free surface of the heat conducting block to the surface of the workpiece; (5) coupling the temperature measuring element with the temperature recording instrument; (6) heating the workpiece, measuring temperature and recording a temperature value; and (7) taking the temperature measuring device out of the weld seam of the workpiece, and cleaning and saving the temperature measuring device. The narrow gap weld seam temperature measuring device has the advantages of simple structure, easy assembly and disassembly, and accurate and real-time temperature measurement, no damage to the weld seam area, and guarantee of the cleanness of the weld seam area.
Description
Technical field:
The invention belongs to the workpiece technical field of heating, be specifically related to the temp measuring method of a kind of narrow gap weld seam temperature measuring device and this narrow gap weld seam.
Background technology:
Large-scale shaft workpiece (for example turbine rotor main shaft) adopts two kinds of modes of production usually, and a kind of is the solid forging moulding; Another kind is after the setting down moulding each section to be welded into integral body.The solid forging moulding has characteristics such as cost height, technical difficulty is big, the production cycle is long because of the large-scale specialized equipment of needs, and practicality is relatively poor.Though and the setting down moulding has overcome characteristics such as cost height, production cycle length; But need good solder technology; And in the solder technology narrow gap weld seam because of having characteristics such as mechanical property preferably, lower unrelieved stress and residual deformation, welding productivity height and production cost are low, avoided the groove section of traditional big thickness steel plate solder technology big, speed of welding slowly, metal fills out that the amount of applying is big, the stress deformation of postwelding sheet material is very big, the low inferior defective of production efficiency in the weld seam.Therefore the narrow gap weld seam technology has obtained using the especially welding of turbine rotor widely in the workpiece welding.
But because the diameter of turbine rotor main shaft is very big, weld seam is dark, and during welding, workpiece temperature is non-temperature constant state, is different from general shaft-like workpiece, and the welding difficulty is very big, and therefore, the narrow gap welding connection technology of turbine rotor requires higher.
In order to guarantee the welding quality of workpiece, especially turbine rotor,, workpiece needs that the butt welded seam district cleans, preheating before being welded, must guarantee to weld the cleanliness and the real time temperature of preceding weld metal zone.For the butt welded seam district carries out the monitoring of real time temperature, normally thermopair is close to surface of the work, carry out heat-barrier material again and lay, do not receive extraneous thermal effect to guarantee the control point temperature.The general aluminosilicate material that uses is laid on the control point, adopts stalloy to fix with the mode of spot welding then.Not only time-consuming, the effort of such thermometric mode, and installation and removal are all inconvenient.Moreover, stalloy to be fixed with the mode of spot welding, cleanliness that will certainly the butt welded seam district cause and have a strong impact on, and the fixing defective source that forms welded workpiece more easily of stalloy spot welding.
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of and be convenient to install, dismounting, and the narrow gap weld seam temperature measuring device that can not destroy the workpiece weld metal zone and carry out the method for thermometric with this device.
For realizing its purpose, the technical scheme that the present invention adopts is:
A kind of narrow gap weld seam temperature measuring device; Comprise heat-conducting block, support compression spring leaf, temperature element and temperature recording instrument; Said heat-conducting block is located at the top of support compression spring leaf; Be provided with thermofin between heat-conducting block and the support compression spring leaf, said temperature element is connected with temperature recording instrument with heat-conducting block respectively.
Said heat-conducting block is that jack is connected with temperature element, and the hole of grafting temperature element is set on the heat-conducting block.
The Free Surface of said heat-conducting block is provided with the hole, and this hole communicates with the patchhole of temperature element.
Said heat-conducting block is a copper billet.
Said copper billet is a red copper.
Said support compression spring leaf is a bow-shaped structural.
Said thermofin is an asbestos cloth.
Said temperature element is an occasionally thermal resistance of thermoelectricity.
Said temperature recording instrument is TR or temperature indicator.
A kind ofly carry out the temp measuring method of narrow gap weld seam, comprise the steps: with said apparatus
1. clean temperature measuring equipment, make its cleaning surfaces, the heat-conducting block that will contact with workpiece carries out rubbing down, exposes the red copper metallochrome;
2. clear up temperature element, make its cleaning surfaces, working end non-oxidation layer;
3. temperature element is connected with heat-conducting block;
4. temperature measuring equipment is inserted the point for measuring temperature of weld seam, heat-conducting block Free Surface and surface of the work are close to;
5. temperature element is connected with temperature recording instrument;
6. workpiece is heated, thermometric begins, writes down the temperature value that records;
7. thermometric finishes, and from the weld seam of workpiece, takes out temperature measuring equipment, cleans, preserves.
The invention has the beneficial effects as follows:
This temperature measuring equipment is done heat-conducting block with the fabulous red copper of heat conductivility, can guarantee the real time temperature of weld metal zone in the workpiece heating process and the consistance of workpiece body temperature; The support compression spring leaf holds out against heat-conducting block, makes it tightly touch weld metal zone workpiece body on one side; Arc support compression spring leaf is convenient to install, dismounting; Whether the hole on the heat-conducting block Free Surface can be observed hot temperature element and insert and put in place; Thermofin is located between support compression spring leaf and the heat-conducting block, need not to adopt stalloy spot welding to fix, and has avoided the defective of traditional thermofin.It has simple in structure, characteristics such as loading and unloading are easy, in real time accurate thermometric.
This temp measuring method is directly inserted temperature measuring equipment in the narrow gap weld seam; Cancelled tradition with the fixing mode of spot welding, avoided the appearance in weld defect source, can not destroy the workpiece weld metal zone; Guarantee the cleanliness of monitoring point, weld metal zone, greatly facilitated the loading and unloading of temperature measuring equipment.
Description of drawings:
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is a kind of user mode synoptic diagram of the present invention.
Code name implication among the figure: 1-heat-conducting block; The 2-thermofin; 3-support compression spring leaf; The 4-screw; The 5-temperature element; The 6-compensating wire; 7,8-workpiece; 9-temperature element jack; The 10-viewport.
Embodiment:
Referring to Fig. 1 to Fig. 4: temperature measuring equipment of the present invention comprises heat-conducting block 1, support compression spring leaf 3, temperature element 5 and temperature recording instrument.Heat-conducting block 1 is the fabulous red copper piece of heat conductivility, and this can guarantee the real time temperature of weld metal zone in the workpiece heating process and the consistance of workpiece body temperature.The structure of support compression spring leaf 3 is very simple, is bow-shaped structural, is convenient to install, dismantle, and also is beneficial in weld seam and expands, shrinks.Heat-conducting block 1 just is located at the top of support compression spring leaf 3, is provided with thermofin 2 between heat-conducting block 1 and the support compression spring leaf 3, and this thermofin 2 is an asbestos cloth, and heat-conducting block 1, thermofin 2 and support compression spring leaf 3 are connected whole by screw 4.Heat-conducting block 1 is provided with the hole of grafting thermopair, and promptly the temperature element jack 9, and the Free Surface of heat-conducting block 1 is provided with the hole, and this hole communicates with the patchhole of grafting thermopair, and promptly viewport 10, and whether it can observe thermopair and insert and put in place.Temperature element 5 is a thermopair, and it also can adopt thermal resistance.Temperature recording instrument is a temperature indicator, and this temperature indicator also can adopt TR to replace.Thermopair is connected with temperature indicator with heat-conducting block 1 respectively, and heat-conducting block 1 is that jack is connected with thermopair.
Above-mentioned temperature measuring equipment is inserted the method for carrying out thermometric in the narrow gap weld seam; Comprise the steps: 1. to clean temperature measuring equipment 11, make its cleaning surfaces, do not have any dirt; Especially the surface of heat-conducting block 1; Will the sand paper rubbing down be carried out on its surface that contacts with workpiece, make heat-conducting block 1 expose the red copper metallochrome, this can guarantee the consistance of temperature; 2. clear up thermopair, make its cleaning surfaces, working end non-oxidation layer; 3. thermopair is inserted in the hole on the heat-conducting block 1, can from the hole that the Free Surface of heat-conducting block 1 is established, watch thermopair and whether insert and put in place; 4. temperature measuring equipment 11 is inserted the point for measuring temperature of workpiece weld metal zone; The footing of support compression spring leaf 3 is a fulcrum with the surface of weld metal zone workpiece 8; Hold out against heat-conducting block 1; The Free Surface of heat-conducting block 1 and thermometric workpiece 7 surfaces of weld metal zone are close to, and the asbestos cloth thermofin 2 between heat-conducting block 1 and the support compression spring leaf 3 has guaranteed that the control point temperature does not receive extraneous thermal effect; 5. the compensating wire 6 with the thermopair tail end connects with temperature indicator; 6. workpiece is heated, thermometric begins, writes down the temperature value that records; 7. thermometric finishes, and from the weld seam of workpiece, takes out temperature measuring equipment 11, with heat-conducting block 1, thermopair and the temperature indicator of temperature measuring equipment separately, cleans respectively, preserves.
Application surface of the present invention is very wide, can be applied to narrow gap weld seam thermometric, the especially turbine rotor of various workpiece.
Claims (6)
1. the narrow gap weld seam temperature measuring device of a turbine rotor comprises heat-conducting block (1), support compression spring leaf (3), temperature element (5) and temperature recording instrument, it is characterized in that: said heat-conducting block
(1) is red copper; Be located at the top of support compression spring leaf (3); Said support compression spring leaf (3) is a bow-shaped structural, is provided with thermofin (2) between heat-conducting block (1) and the support compression spring leaf (3), and said temperature element (5) is connected with temperature recording instrument with heat-conducting block (1) respectively.
2. according to the narrow gap weld seam temperature measuring device of the said turbine rotor of claim 1, it is characterized in that: said heat-conducting block (1) and temperature element (5) are provided with the hole of grafting temperature element (5) for jack is connected on the heat-conducting block (1).
3. according to the narrow gap weld seam temperature measuring device of the said turbine rotor of claim 2, it is characterized in that: the Free Surface of said heat-conducting block (1) is provided with the hole, and this hole communicates with the patchhole of temperature element (5).
4. according to the narrow gap weld seam temperature measuring device of the said turbine rotor of claim 1, it is characterized in that: said thermofin (2) is an asbestos cloth.
5. according to the narrow gap weld seam temperature measuring device of the said turbine rotor of claim 1, it is characterized in that: said temperature element (5) is an occasionally thermal resistance of thermoelectricity.
6. according to the narrow gap weld seam temperature measuring device of the said turbine rotor of claim 1, it is characterized in that: said temperature recording instrument is TR or temperature indicator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101861372A CN101858793B (en) | 2010-05-22 | 2010-05-22 | Narrow gap weld seam temperature measuring device and method |
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| CN2010101861372A CN101858793B (en) | 2010-05-22 | 2010-05-22 | Narrow gap weld seam temperature measuring device and method |
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| CN101858793A CN101858793A (en) | 2010-10-13 |
| CN101858793B true CN101858793B (en) | 2012-07-04 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102435332A (en) * | 2011-10-24 | 2012-05-02 | 蚌埠日月仪器研究所有限公司 | Temperature measuring device of pipeline |
| CN102620676B (en) * | 2012-05-02 | 2014-03-05 | 中国石油集团渤海石油装备制造有限公司 | Measuring method for welding heat cycle parameters of longitudinal seam submerged-arc welded pipe |
| CN103175618B (en) * | 2013-03-04 | 2015-08-05 | 詹姆斯·P·辛格 | Pyroreaction apparatus surface temperature sensor fixing structure and installation method |
| CN104236737B (en) * | 2014-08-28 | 2016-11-02 | 天津市澳玛科技开发有限公司 | The detection method of temperature, detection device and application thereof are dried in packing jar electromagnetic induction coating |
| CN105728900B (en) * | 2015-07-07 | 2017-10-24 | 哈尔滨理工大学 | The measuring method and system in narrow gap welding temperature field |
| CN105157864B (en) * | 2015-10-13 | 2017-11-10 | 北京航空航天大学 | The measuring method of hollow pole test specimen inner wall temperature |
| CN106768445B (en) * | 2016-12-29 | 2018-10-30 | 北京航空航天大学 | A kind of quick response temperature thermocouple |
| CN108414106B (en) * | 2018-02-08 | 2019-07-12 | 北京航空航天大学 | A kind of casting mould quick response temperature thermocouple |
| CN108387320B (en) * | 2018-02-08 | 2019-07-12 | 北京航空航天大学 | A kind of permanent mold casting quick response temperature thermocouple |
| CN110542485B (en) * | 2019-10-15 | 2024-04-09 | 北京瑞尔非金属材料有限公司 | Measuring device and manufacturing method for lining temperature of main runner of blast furnace molten iron |
| CN111707390B (en) * | 2020-07-31 | 2022-04-05 | 中国航空发动机研究院 | Multi-point temperature measuring rod for inner wall of hollow circular tube test piece and temperature measuring method thereof |
| CN112556222A (en) * | 2020-12-14 | 2021-03-26 | 珠海格力电器股份有限公司 | Marine air conditioner and seawater flow detection control method and device based on marine air conditioner |
| CN113155884B (en) * | 2021-03-08 | 2022-04-26 | 东方电气集团东方汽轮机有限公司 | Device and method for testing thermal stability of forging blank of welded rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0238826A (en) * | 1988-07-29 | 1990-02-08 | Sumitomo Heavy Ind Ltd | Temperature measuring device and temperature measuring structure using the same |
| KR100430280B1 (en) * | 2001-03-14 | 2004-05-04 | 엘지전자 주식회사 | Temperature sensor |
| US6761480B2 (en) * | 2002-08-26 | 2004-07-13 | Charles William Parnicza | Thermocouple holder for furnace tube |
| JP2006242574A (en) * | 2005-02-28 | 2006-09-14 | Mitsubishi Heavy Ind Ltd | Pad type thermocouple |
| CN201196594Y (en) * | 2008-05-16 | 2009-02-18 | 鞍山钢铁集团公司第二发电厂 | Heat collection block used for measuring wall temperature of metal pipe |
| CN101571428B (en) * | 2009-05-21 | 2010-12-08 | 中国科学院力学研究所 | Multi-function sensor and heat current and temperature measuring method under high temperature |
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