CN1480717A - Multipoint thermocouple transducer - Google Patents
Multipoint thermocouple transducer Download PDFInfo
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- CN1480717A CN1480717A CNA031439330A CN03143933A CN1480717A CN 1480717 A CN1480717 A CN 1480717A CN A031439330 A CNA031439330 A CN A031439330A CN 03143933 A CN03143933 A CN 03143933A CN 1480717 A CN1480717 A CN 1480717A
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Abstract
The invented sensor is composed of thermocouple 1 and sensor body 2. The characters of the sensor are as follows. The sensor body 2 is a columniform bar shaped part. There are a locking pin slot 5 and one or more thermocouple slots 4 with different lengths paralleled to axis of the bar shaped part. Screw thread or screwed hole is manufactured on demounting end. Thermocouples are fixed on thermocouple slots. Circle of thermocouple is tangency with circle of sensor body. The locking pin is pressed in the locking pin slot. Circle of locking pin slot and the circle of sensor body are overlapped each other. The overlapped length guarantees that light duty type tight fit is formed when the locking pin is inserted. Material of sensor body is same as the material of object with its temp to be measured, or they have near thermal conductivity. The invented sensor has features of positioned with accuracy, easy to load and unload as well as high measuring accuracy.
Description
Technical field
The present invention relates to a kind of device of multi-point temperature measurement technology, belong to the temperature survey field.
Background technology
Temperature is one of most important procedure parameter.According to incompletely statistics, it on average accounts for about 60% of thermal parameter measurement point greatly.Temperature detecting precision has significant effects to the quality of process control.Computer technology impels research and production process monitoring and automatic technology to develop rapidly, thereby has improved the requirement to process variable detection and accuracy of detection.
The most widely used detector unit is thermopair and thermal resistance, and this has been proven technique very.Yet process detects the temperature that usually requires the inner a plurality of positions of monitoring solids, and promptly there is the restriction of temperature element installing space in continuous temperature measurement under certain specific design feature and application conditions toward contact.Usually adopt design proposal voluntarily.The location of temperature element, fixing, the accurate measurement of check point position is a suitable complicated technology difficult problem, does not have standard to follow, and is mishandling, can not guarantee accuracy of detection.In prior art, there is producer that the combination of commodity multiple spot thermopair can be provided, according to each point position that the user proposes, the dimensional requirement and the application message of protection tube are made surely.Its principle is that a plurality of thermopair bags are bundled in the protective metal shell, and armouring together.Owing in a sensor, the thermopair that is positioned at diverse location is installed, it is behind detected object internal fixation, location, this sensor can accurately be measured along the temperature of sensor length diverse location, it can solve space constraints, but still there are the following problems: 1) when accurately detecting, need to determine the exact position of each check point in sensor, the thermopair combination that armouring is good, the user is difficult to point position is accurately measured; 2) the thermopair bag is bundled in the protective metal shell, and armouring this sensor material together is different with object to be detected, influences the heat transfer characteristic of object to be detected; 3) can not design voluntarily, need be by producer for design and special the order, the time is long, the cost height; 4) can not be provided at object to be detected interior fixing, location technology.
Summary of the invention
Purpose of the present invention and task are will overcome prior art to have: the exact position that 1) is difficult to determine check point; 2) can not guarantee that sensor and testee are same materials; 3) location, the fixing deficiency of difficulty, and provide a kind of and can accurately measure along the temperature of sensor length diverse location are accurately located and fix low-cost multiple spot thermocouple sensor, special proposition technical solution of the present invention.
Basic design of the present invention is that a plurality of thermopairs are installed in the sensor body of a compactness, adopt thermocouple groove and thermopair on the sensor body, by riveted joint, bonding, and the fixing and location of locking cotter way and locking pin, reach the thermopair forward terminal and closely contact, guarantee the accurate location of check point and accurately measurement with the hole wall of testee thermometer hole.
A kind of multiple spot thermocouple sensor 10 proposed by the invention, constituted by thermopair 1, sensor body 2, it is characterized in that: sensor body 2 is cylindrical rod members, the one end is an insertion end, the other end then is the dismounting end, parallel its axis is processed with locking cotter way 5 and the one or more thermocouple groove that it is uneven in length 4 on rod member, is processed with screw thread 3 or the axis direction in the termination is processed with threaded bore 11 in the periphery of dismounting end; In the thermocouple groove 4 that is uneven in length, the width that its diameter and thermocouple groove are installed is complementary, the corresponding thermopair 1 of length, and by part riveted joint or be bonded and fixed in the groove, and constitute multiple spot thermocouple sensor 10; Make the material of sensor body 2, should adopt and material identical by the thermometric object or that thermal conductive property is close; Thermopair 1 is in the position of thermocouple groove 4, should be that its circumference is just in time tangent at the thermopair place that is fixed with the circumference of sensor body 2, and be placed on the locking pin 6 residing positions of locking cotter way 5 the insides, its circumference is completed a business transaction mutually with the circumference of sensor body 2, it is completed a business transaction and forms light-duty stationary fit when line length should guarantee to insert locking pin, its magnitude of interference is 0.0004～0.004 times of the diameter of sensor body, when the optional upper limit of magnitude of interference when softer by thermometric object material.
Of the present invention being further characterized in that: the installation of multiple spot thermocouple sensor is, at first should be at the position of the desire thermometric of testee, be processed with the thermometer hole 8 that the length of the diameter of its diameter and the degree of depth and sensor body 2 and insertion end is complementary, after the insertion end of thermocouple sensor injects thermometer hole 8, again locking pin 6 is pressed in the locking cotter way 5 and is fixed, and by pushing the position of stationary heat galvanic couple simultaneously, to guarantee the hole wall of thermopair near testee thermometer hole 8, the contact point of thermopair 1 leading section and testee, be check point, the dismounting end of sensor body is then stayed the outside of testee, prepares against by the remover that is threaded; When dismounting end length is non-vanishing, answer machining screw 3 in its periphery; When dismounting end length is zero, in the sensor termination along answering machining screw eyelet 11 on the axis direction.The base of thermocouple groove 4 and locking cotter way 5 all should be perpendicular with the radius of sensor body 2.
Adopt the technology of the present invention, can design the quantity and the distributing position thereof of thermopair set on sensor body as required voluntarily, select the size of type, specification and the sensor body 2 of commodity thermopair 1 for use, to adapt to the different requirements of determined temperature range, installing space, thermocouple sensor installation and removal, cost etc.
Thermometer hole on the technology of the present invention sensor and the testee uses movingly, apolegamy when sensor and thermometer hole assembling, use a locking pin to adopt method of press-fitting fixation of sensor body easily, reach the purpose of at the object to be detected internal fixation, accurately locating many thermopairs.Locking pin is suitable with sensor body length, and promptly locking pin is terminal holds the outside of staying testee simultaneously with dismounting, in order to unloading locking pin by remover, and just can extracting sensor.
After sensor installs, thermopair is connected with compensating wire, signal is sent into computer detection system or measuring instrument, record and displays temperature data.
Major advantage of the present invention is: 1) because the diameter of thermopair 1, the length of sensor body 2 and on sensor body the quantity and the distributing position thereof of set thermopair can learn in advance easily as required, therefore, any position of thermopair 1 end points in the thermocouple sensor all can accurately be measured; 2) adopt same material or the close material of thermal conductive property owing to sensor body and by the thermometric object, therefore, can reduce the influence of sensor by minimally, to guarantee temperature measurement accuracy to testee inside continuity and heat transfer; 3) because the diameter of thermocouple sensor body 2 is very little, and length of its dismounting end can be reduced to zero, therefore, can be used for the temperature survey that work space has the object of strict restriction; 4) owing to being locked, sensor locks admittedly, so in measuring process, check point does not have the variation of loosening and position, and guarantees that check point contacts with the tight of hole wall, and the raising precision; 5) because the thermometer hole on sensor and the testee uses movingly, and locking pin and thermometer hole are selected light-duty stationary fit for use, and its magnitude of interference is very little, therefore, loading and unloading and easy to maintenance; 6) owing to only need the commodity thermopair of purchase standard, point position can be made amendment as required at test process, commodity multiple spot thermopair assembled scheme contrast with special different size customized, the repeatedly special high cost of not only wanting customized, test duration will drag very longly, therefore, when the test of implementing belonged to the research and development sex work, advantage of the present invention was more outstanding.
Description of drawings
The present invention's design has 16 accompanying drawings.Fig. 1 is the structural representation of facing of a kind of multiple spot thermocouple sensor body of proposing of the present invention, Fig. 2 is the right TV structure synoptic diagram of Fig. 1, Fig. 3 is the A-A section structure synoptic diagram of Fig. 1, Fig. 4 is the B-B section structure synoptic diagram of Fig. 1, Fig. 5 is pack into the structural representation of facing behind thermopair and the locking pin of Fig. 1, Fig. 6 is the C-C section structure synoptic diagram of Fig. 5, Fig. 7 is the D-D section structure synoptic diagram of Fig. 5, Fig. 8 is that two thermopairs of working as proposed by the invention are installed in a groove side by side, sensor body when two thermopair forward terminal is close to conllinear is faced structural representation, Fig. 9 is the E-E section structure synoptic diagram of Fig. 8, Figure 10 is that the dismounting end length of the designed sensor body of the present invention is faced structural representation when being zero, Figure 11 is the cross-sectional view of facing that a plurality of 2 thermocouple sensors are installed on the crystallizer of being made by copper pipe, Figure 12 is the local structure for amplifying synoptic diagram in the A place of Figure 11, Figure 13 is the F-F section structure synoptic diagram of Figure 12, Figure 14 be can measure 3 points thermocouple sensor face structural representation, Figure 15 is the G-G section structure synoptic diagram of Figure 14, and Figure 16 is that the copper plate of crystallizer that the multiple spot thermocouple sensor is installed is faced cross-sectional view.
Below in conjunction with accompanying drawing details of the present invention is further described.
Fig. 1 is the structural representation of facing of a kind of multiple spot thermocouple sensor body of proposing of the present invention.
Show among the figure that sensor body 2 is elongated cylindricality shafts.Its structure is divided into two parts: an end is an insertion end, and its other end is the dismounting end; Be processed with locking cotter way and two at parallel its axis of insertion end and be parallel to each other the thermocouple groove 4 of its varying length; Periphery at the dismounting end is processed with screw thread 3, in order to connect remover.Symbol A-A among the figure and B-B are the section symbol.Dotted line represents to lock the cotter way position among the figure.
Fig. 2 is the right TV structure synoptic diagram of Fig. 1.
Show among the figure that it is terminal that thermocouple groove 4 reaches the dismounting end, to make things convenient for the thermopair wiring, two alternate angles of thermocouple groove are α.It is terminal that locking cotter way 5 also reaches dismounting end, and during assembling, the locking pin end will be stayed in the locking cotter way 5 of dismounting end of testee outside, in order to unloading locking pin by remover.Symbol 2 is sensor bodies, and symbol 3 is screw threads.
Fig. 3 is the A-A section structure synoptic diagram of Fig. 1.
Show among the figure that be processed with 2 thermocouple groove 4 and a locking cotter way 5 in the insertion end of sensor body 2, the base of each groove is all perpendicular with the radius of sensor body, two thermocouple groove 4 alternate certain distance and angle [alpha].
Fig. 4 is the B-B section structure synoptic diagram of Fig. 1.
Show to have only a thermocouple groove 4 among the figure on the position of the B-B of Fig. 1 section part, symbol 5 is the locking cotter way, and symbol 2 is a sensor body.
Fig. 5 is pack into the structural representation of facing behind thermopair and the locking pin of Fig. 1.
Show among the figure, the thermopair 1 of different length is installed in the thermocouple groove 4 of corresponding length of sensor body 2, and is fixed in the groove by part riveted joint or bonding, and symbol 3 is dismounting end external thread, symbol 9 is the thermopair leading section, and symbol C-C and D-D are cross section place.Dotted line is represented the locking pin position among the figure.
Fig. 6 is the C-C section structure synoptic diagram of Fig. 5.
Show among the figure, the thermopair 1 of two different lengths is placed in the thermocouple groove 4 of corresponding length separately, the diameter of two thermopair 1 just in time is complementary with the width of thermocouple groove 4, and the position of thermopair 1 is just in time tangent at the thermopair place that is fixed with the circumference of sensor body 2 for its circumference.Yet, the locking pin 6 of locking cotter way 5 the insides, though diameter also is complementary with locking cotter way 5 width, but, the position that it is located makes its circumference complete a business transaction mutually with the circumference of sensor body 2, and it is completed a business transaction and forms light-duty stationary fit when line length should guarantee to insert locking pin, and the magnitude of interference is 0.0004～0.004 times of sensor body diameter, guaranteeing each thermopair 1 and closely to be contacted by the thermometric hole wall of thermometric object, and locking multiple spot thermocouple sensor.The base of each thermocouple groove 4 and locking cotter way 5 is all perpendicular with the radius of sensor body 2, two thermopair 1 alternate certain distance and angle [alpha].Dot-and-dash line among the figure on the sensor body circumference profile is non-existent, just understands above-mentioned tangent and the situation of completing a business transaction mutually for better.
Fig. 7 is the D-D section structure synoptic diagram of Fig. 5.
The all same Fig. 6 of symbol among the figure, different is to have only a thermopair 1 herein.
Fig. 8 is that two thermopairs proposed by the invention are installed in a groove 4 side by side, the sensor body when two thermopair forward terminal is close to conllinear face structural representation.
Show among the figure, be placed with two thermopairs 1 that its endpoint location is different in a thermocouple groove 4, and two leading sections 9 are near conllinear, promptly the angle α between two thermopairs is zero situation.Symbol 3 is dismounting end external thread, and symbol 2 is a sensor body, and E-E is the section symbol.This design is applicable to the hot-fluid of measurement along the sensor length direction very much.
Fig. 9 is the E-E section structure synoptic diagram of Fig. 8.
Be presented among the figure in the thermocouple groove 4 on the sensor body 2, two thermopairs 1 are housed, and in locking cotter way 5, locking pin 6 is housed.The diameter of two thermopairs 1 just in time is complementary with the width of thermocouple groove 4, and the position of two thermopairs 1 is just in time tangent at thermopair 1 place that is fixed with the circumference of sensor body 2 for its circumference.The circumference of locking pin 6 is completed a business transaction mutually with the circumference of sensor body 2, it is completed a business transaction and forms light-duty stationary fit when line length should guarantee to insert locking pin, its magnitude of interference is 0.0004～0.004 times of sensor body diameter, guaranteeing two thermopairs 1 and closely to be contacted by the thermometric hole wall of thermometric object, and locking multiple spot thermocouple sensor.The base of thermocouple groove 4 and locking cotter way 5 is all perpendicular with the radius of sensor body.
Figure 10 is that the dismounting end length of the designed sensor body of the present invention is faced structural representation when being zero.
Show among the figure, on the termination of the sensor body 2 of this structure, and be processed with threaded bore 11, in order to connect remover along the direction of its axis.The all same Fig. 1 of other symbols.The position of representing locking slot among the figure along two dotted lines of axis.
Figure 11 is the cross-sectional view of facing that a plurality of 2 thermocouple sensors are installed on the crystallizer of being made by copper pipe.
This figure is the specific embodiment that the present invention measures the crystallizer wall Temperature Distribution of being made by copper pipe.This is that several 2 thermocouple sensors 10 are installed on the crystallizer of the small-sized continuous billet casting of certain steelworks, with the multi-point temp of measuring its wall and the example of hot-fluid.Show among the figure that 62 thermocouple sensors are installed in 6 thermometer holes 8 of 7 one section outer walls of testee, by the extruding of locking pin 6, with the bottom close proximity of the sidewall and the thermometer hole 8 of thermometer hole, the length of the dismounting end of thermopair is zero.Symbol A is the local position of amplifying, A place, and symbol 1 is a thermopair.
Figure 12 is the local structure for amplifying synoptic diagram in the A place of Figure 11.
Show among the figure that 2 thermocouple sensors are installed in the thermometer hole 8 of testee 7 outer walls.Two thermocouple groove 4 on sensor body 2 are arranged side by side, and a thermopair 1 respectively is housed.The diameter of two thermopairs 1 just in time is complementary with the diameter of groove 4, and 9 is the thermopair leading section.The diameter of locking pin 6 and locking cotter way 5 are complementary, and guarantee two thermopairs 1 and closely contacted by thermometer hole 8 walls of thermometric object, and locking multiple spot thermocouple sensor.The length of the dismounting end of thermopair is zero, and the locking pin end is stayed the outside of testee, in order to unloading locking pin by remover.Because sensor is very short, can not the machining screw eyelet, during dismounting, will utilize and lock cotter way 5, by the remover unload sensor.Thermometer hole 8 adds man-hour, uses target drill, processes flat-bottom hole.Its F-F is the cross section place symbol.
Figure 13 is the F-F section structure synoptic diagram of Figure 12.
Thermocouple groove in the sensor body and locking cotter way all use circular hole.It also is a kind of design proposed by the invention.This design is from consideration easy to process, is used for the situation that the sensor body diameter is smaller, length is relatively shorter.Two thermocouple groove 4 that are presented among the figure on the sensor body 2 are arranged side by side, and a thermopair 1 respectively is housed, and in locking cotter way 5 locking pin 6 are housed.The diameter of two thermopairs 1 just in time is complementary with the diameter of groove 4, and the position of two thermopairs 1 is just in time tangent at thermopair 1 place that is fixed with the circumference of sensor body 2 for its circumference.The diameter of locking pin 6 and locking cotter way 5 are complementary, and complete a business transaction mutually with the circumference of sensor body 2, it is completed a business transaction and forms light-duty stationary fit when line length should guarantee to insert locking pin, its magnitude of interference is 0.0004～0.004 times of sensor body diameter, guaranteeing two thermopairs 1 and closely to be contacted by the thermometric hole wall of thermometric object, and locking multiple spot thermocouple sensor.
Figure 14 be can measure 3 points thermocouple sensor face structural representation.
Be on sensor body 2, to be equipped with 3 thermopairs 1 with Fig. 1 difference among the figure.Symbol 9 is the thermopair leading section, and symbol 3 is the screw thread of dismounting end periphery processing, and symbol 4 is a thermocouple groove, and G-G is the cross section place symbol.Represent the position of locking pin along two dotted lines of axis direction among the figure.
Figure 15 is the G-G section structure synoptic diagram of Figure 14.
All same Fig. 6 of each symbol among the figure, the also same Fig. 6 of its assembly relation.Be that with the difference of Fig. 6 Fig. 6 is 2 thermopairs, Figure 15 has 3 thermopairs.
Figure 16 is that the copper plate of crystallizer that the multiple spot thermocouple sensor is installed is faced cross-sectional view.
This figure is the specific embodiment that the present invention measures the mould temperature distribution of being made by copper coin.These to be certain steelworks install on the crystallizer of continuous casting heavy slab 3 thermocouple sensors 10 are with the example of the multi-point temp of measuring its wall.Show among the figure that two 3 thermocouple sensors 10 are mounted in the thermometer hole 8 in testee 7 crystallizer walls, by with the extruding of the locking pin 6 that cooperates of locking cotter way 5, make point for measuring temperature, promptly the leading section 9 of three thermopairs 1 is in different positions respectively, and with the sidewall and the bottom close proximity of thermometer hole 8.The thermopair 1 of different length is installed in respectively in the thermocouple groove 4 of corresponding length of sensor body 2.Symbol 3 is the screw thread of dismounting end periphery processing, and symbol 12 is the copper coin hot side, and symbol 13 is the copper coin huyashi-chuuka (cold chinese-style noodles), and symbol 14 is the copper coin side.
Embodiment
Temperature and hot-fluid when certain steelworks detects the water mold work that casts the round steel billet of minor diameter continuously.Think, adopt a plurality of thermopair bags are bundled in the protective metal shell that armouring commodity multiple spot thermopair combination together has following difficulty: 1) need be customized specially to abroad, delivery cycle is long, the cost height; 2) because its point position is measured difficulty, be difficult to guarantee the positional precision of measuring point; 3) need Design and Machining voluntarily, solve location, the fixation problem of armouring multiple spot thermopair.Analyze and think that also the test of enforcement belongs to the research and development sex work, point position need be made amendment at test process, repeatedly not only wants high cost to the commodity multiple spot thermopair combination of external special different size customized, and the test duration will drag very longly.So, determine to adopt a kind of multiple spot thermocouple sensor of the present invention, to guarantee degree of accuracy, needn't wait for delivery cycle simultaneously, and reduce cost.Its concrete steps are as follows:
The first step, the understanding of testee situation
1540 ℃ of cast steel medial temperatures, its wall thickness of testee crystallizer is the thin cylinder of 14mm, material is a copper.Molten steel pours into from top, and strand is pulled out from the bottom.The online detection of designing requirement is along crystallizer radial heat flows and thin-walled internal temperature.The surrounding space of crystallizer is smaller, and work space has strict restriction.
In second step, determine the multiple spot thermocouple sensor
Adopt 2 thermocouple sensors of small size.Sensor body uses fine copper to make, its locking pin adopts brass to make, it is the commodity armoured thermocouple of 1mm that the thermopair of sensor is selected diameter for use, and the diameter of sensor body is chosen as 4 (+0 ,-0.1) mm, length is 7mm, the diameter of locking pin is 2.2 (+0 ,-0.1) mm, and length is 7mm, the length of the dismounting end of sensor is zero, does not establish dismounting threaded bore 11 simultaneously.Because the requirement that detects hot-fluid is arranged, thus two thermopairs in the sensor install side by side, it one between angle α be approximately zero, the measuring point that makes two interior thermopairs of same sensor is near conllinear.It is 1 (0 that thermocouple groove is used two diameters, + 0.025) hole of mm, it is 2 (0 that the locking cotter way uses diameter, + 0.025) hole of mm, two end points spacings of thermopair are 3.5mm, and the zone that the thermocouple groove of slightly pressurizeing is connected with thermopair forms slightly riveted joint, thermopair is fixed in the thermocouple groove, promptly becomes multiple spot thermocouple sensor 10.
The 3rd step, the installation of multiple spot thermocouple sensor
On crystallizer, six layers of measuring point are set on differing heights as requested, radially being drilled with diameter at the measuring point place is 4 (0 ,+0.025) mn, and the degree of depth is the thermometer hole of 7mm.Every layer of even distribution laid 62 thermocouple sensors.When laying, at first the insertion end with the multiple spot thermocouple sensor injects in the thermometer hole, after levelling is good, insert in the locking cotter way locking pin fastening, use apolegamy during assembling, form light-duty stationary fit when guaranteeing to insert locking pin, its magnitude of interference is about 0.002mm, reaches jam-packed and guarantees that the thermopair end points gets final product with tight contact of thermometric hole wall.
The 4th step, the connection of signal wire
Thermocouple wire is linked to each other with compensating wire, temperature signal is imported computer detection system or measuring instrument, record and displays temperature data.
The 5th step, test and result's report
This multiple spot thermocouple sensor of the present invention reaches the designing requirement of on-line monitoring temperature and hot-fluid fully.Measure and determine, its the 1st layer each front end measuring point medial temperature is 37.9 ℃ from top to bottom, the 2nd layer of each front end measuring point medial temperature is 115.4 ℃, the 3rd layer of each front end measuring point medial temperature is 87.7 ℃, the 4th layer of each front end measuring point medial temperature is 80.2 ℃, the 5th layer of each front end measuring point medial temperature is 80.1 ℃, and the 6th layer of each front end measuring point medial temperature is 78.3 ℃.
According to the temperature of former and later two measuring points and 2 distances accurately measuring, can accurately calculate along the hot-fluid of sensor axis direction, the 1st layer of mean heat flux is 274kw/m
2, the 2nd layer of mean heat flux is 2883kw/m
2, the 3rd layer of mean heat flux is 1341kw/m
2, the 4th layer of mean heat flux is 1482kw/m
2, the 5th layer of mean heat flux is 1370kw/m
2, the 6th layer of mean heat flux is 1516kw/m
2
Test result reaches expected result fully, has obtained the precise information of testee temperature and hot-fluid.Needn't wait for the time customized, needn't pay expense customized, save foreign exchange to producer.
The 6th step, dismounting
The locking pin end of thermocouple sensor is stayed the outside of testee, unloads locking pin by remover.Because sensor is very short, during dismounting, utilize locking cotter way 5, by the remover unload sensor.Sensor after the dismounting is checked, after damaged part is repaired, demarcated, prepared test next time and use.
Temperature and hot-fluid when certain steelworks detects the crystallizer work that casts the heavy steel plate base continuously.Think, adopt a plurality of thermopair bags are bundled in the protective metal shell that armouring commodity multiple spot thermopair combination together has following deficiency: 1) need be customized specially to abroad, delivery cycle is long, the cost height; 2) because its point position is measured difficulty, be difficult to guarantee the positional precision of measuring point; 3) need Design and Machining voluntarily, solve location, the fixation problem of armouring multiple spot thermopair.Analyze and think that also the test of enforcement belongs to the research and development sex work, point position need be made amendment at test process, repeatedly not only wants high cost to the commodity multiple spot thermopair combination of external special different size customized, and the test duration will drag very longly.So, determine to adopt a kind of multiple spot thermocouple sensor of the present invention, to guarantee degree of accuracy, needn't wait for delivery cycle simultaneously, and reduce cost.Its concrete steps are as follows:
The first step, the understanding of testee situation
Testee is the crystallizer that is used for the molten steel of 1540 ℃ of continuous pouring medial temperatures, and it is that four blocks of massive plates of 50mm are formed by wall thickness, and material is a copper.The online detection crystallizer of designing requirement internal temperature.The surrounding space of crystallizer is smaller, and the working sensor space is subjected to strict restriction.
In second step, determine the multiple spot thermocouple sensor
Adopt 3 thermocouple sensors.Sensor body uses fine copper to make, and its locking pin adopts stainless steel to make, and it is the commodity armoured thermocouple of 1mm that the thermopair of sensor is selected diameter for use.The diameter of sensor body is chosen as 5 (0 ,+0.025) mm, and length is 250mm, and the diameter of locking pin is 2.2 (0 ,+0.025) mm, and length is 250mm, and the length of the dismounting end of sensor is 7mm, and the periphery of holding in dismounting is processed with screw thread.A thermopair in the sensor is installed in and locks the other end that cotter way is positioned at same diameter line, and other two thermopairs are distributed in its both sides, and angle respectively is 60 degree between three thermopairs.The thermopair groove depth is 1mm, and wide is 1mm, and the locking pin groove depth is 2mm, and wide is 2mm, and the base of each thermocouple groove 4 and locking cotter way 5 is all perpendicular with the radius of sensor body 2.A thermopair end points is in the end of sensor body insertion end, and the end of other two thermopair end-point distances sensor body insertion ends is respectively 155 and 95mm.The zone that slight pressurization thermocouple groove is connected with thermopair forms slightly and rivets, and the part is aided with and bonding thermopair is fixed in the thermocouple groove in case of necessity, promptly becomes multiple spot thermocouple sensor 10.
The 3rd step, the installation of multiple spot thermocouple sensor
As requested, on the side 14 that dull and stereotyped crystallizer thickness is 50mm, install two and arrange 3 thermocouple sensors, arranging near one of hot side 12 is the near-thermal face, arranges near one of huyashi-chuuka (cold chinese-style noodles) 13 to be nearly huyashi-chuuka (cold chinese-style noodles).Thermopair near the dismounting end in the sensor body is a ground floor, and the centre is the second layer, and insertion end place thermopair is the 3rd layer.Like this, just in dull and stereotyped differing heights location arrangements three layers of thermopair.
Being drilled with diameter at the diverse location place is 5 (0 ,+0.025) mm, and the degree of depth is the thermometer hole of 243mm.Each thermometer hole is laid 13 thermocouple sensor 10.When laying, at first the insertion end with the multiple spot thermocouple sensor injects in the thermometer hole, after adjusting, inserts in the locking cotter way locking pin fastening.Use apolegamy during assembling, form light-duty stationary fit when guaranteeing to insert locking pin, its magnitude of interference is about 0.016mm, reaches jam-packed and guarantees that the thermopair end contacts with the tight of thermometric hole wall.
The 4th step, test and result
This multiple spot thermocouple sensor reaches the designing requirement of on-line monitoring temperature and hot-fluid fully.
Near-thermal face ground floor thermopair medial temperature is 200 ℃, and second layer thermopair medial temperature is 320 ℃, and the 3rd layer of thermopair medial temperature is 230 ℃; Nearly huyashi-chuuka (cold chinese-style noodles) ground floor thermopair medial temperature is 110 ℃, and second layer thermopair medial temperature is 180 ℃, and the 3rd layer of thermopair medial temperature is 120 ℃.
The data of test provide basic data for numerical evaluation.According to the temperature of per two measuring points and 2 distances accurately measuring, can accurately calculate along the hot-fluid of the line direction of two measuring points, assurance obtains the precise information of testee temperature and hot-fluid.Use the present invention, point position can be made amendment easily as required at test process, and test needn't be waited for to producer's sensor special customized and make up the needed time, needn't pay expense customized to producer, has saved foreign exchange.
The 5th step, dismounting
Remove locking pin, promptly can connect remover, take out the multiple spot thermocouple sensor by dismantling the screw thread of the periphery processing of holding.Sensor after the dismounting is checked, after damaged part is repaired, demarcated, prepared test next time and use.
Claims (4)
1. a multiple spot thermocouple sensor is made of thermopair 1, sensor body 2, it is characterized in that:
A) sensor body 2 is columniform rod members, the one end is an insertion end, the other end then is the dismounting end, parallel its axis is processed with a locking cotter way 5 and one or more thermocouple groove that it is uneven in length 4 on rod member, is processed with on screw thread 3 or the axis in the termination and along its direction in the periphery of dismantling end and is processed with threaded bore 11;
B) in the thermocouple groove 4 that is uneven in length, the width that its diameter and thermocouple groove are installed is complementary, the corresponding thermopair 1 of length, and by part riveted joint or be bonded and fixed in the groove, and constitute multiple spot thermocouple sensor 10;
C) thermopair 1 is in the position of thermocouple groove 4, should be that its circumference is just in time tangent at the thermopair place that is fixed with the circumference of sensor body 2.And the locking pin 6 residing positions that are placed on locking cotter way 5 the insides should make its circumference complete a business transaction mutually with the circumference of sensor body 2, it is completed a business transaction and forms light-duty stationary fit when line length should guarantee to insert locking pin, its magnitude of interference is 0.0004～0.004 times of sensor body diameter, when the optional upper limit of magnitude of interference when softer by thermometric object material;
D) material of making sensor body 2 should adopt and material identical by the thermometric object or that thermal conductive property is close.
2. a kind of multiple spot thermocouple sensor according to claim 1, it is characterized in that: the installation of multiple spot thermocouple sensor is, at first should be at the position of the desire thermometric of testee, be processed with the thermometer hole 8 that the length of the diameter of its diameter and the degree of depth and sensor body 2 and insertion end is complementary, thermometer hole on sensor and the testee uses movingly, after the insertion end of thermocouple sensor injects thermometer hole 8, to be fixed in the locking pin 6 insertion locking cotter ways 5, and by pushing the position of stationary heat galvanic couple simultaneously, to guarantee the hole wall of thermopair near the thermometer hole 8 of testee, the contact point of thermopair 1 forward terminal 9 and testee, be check point, the dismounting end of sensor body is then stayed the outside of testee, prepares against by the remover that is threaded.
3. a kind of multiple spot thermocouple sensor according to claim 1 is characterized in that: when dismounting end length is non-vanishing, answer machining screw 3 in its periphery; When dismounting end length is zero, in the sensor termination along answering machining screw eyelet 11 on the axis direction;
4. according to claim 1,2 described a kind of multiple spot thermocouple sensors, it is characterized in that: the base of thermocouple groove 4 and locking cotter way 5 all should be perpendicular with the radius of sensor body 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143933 CN1186601C (en) | 2003-07-31 | 2003-07-31 | Multipoint thermocouple transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143933 CN1186601C (en) | 2003-07-31 | 2003-07-31 | Multipoint thermocouple transducer |
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| CN1480717A true CN1480717A (en) | 2004-03-10 |
| CN1186601C CN1186601C (en) | 2005-01-26 |
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| CN 03143933 Expired - Fee Related CN1186601C (en) | 2003-07-31 | 2003-07-31 | Multipoint thermocouple transducer |
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| CN101650231B (en) * | 2008-08-12 | 2013-05-15 | 上海宝冶建设有限公司 | On-line quick repair method for blast furnace thermocouple |
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| CN101650231B (en) * | 2008-08-12 | 2013-05-15 | 上海宝冶建设有限公司 | On-line quick repair method for blast furnace thermocouple |
| CN103256994A (en) * | 2013-05-14 | 2013-08-21 | 中国航空动力机械研究所 | Bearing device of chameleon paint sample wafer and chameleon paint sample wafer manufacturing method |
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| CN104977091A (en) * | 2014-04-08 | 2015-10-14 | 舍弗勒技术股份两合公司 | Temperature sensor assembly for motor, motor, electric vehicle and installation method |
| CN104062022A (en) * | 2014-07-09 | 2014-09-24 | 葛洲坝易普力股份有限公司 | Full-blast-hole temperature monitoring device |
| AU2019232685B2 (en) * | 2018-03-07 | 2021-12-09 | Rosemount Inc | Heat flux sensor with improved heat transfer |
| CN110243487A (en) * | 2018-03-07 | 2019-09-17 | 罗斯蒙特公司 | Heat flux sensor with improved heat transfer |
| CN108593127A (en) * | 2018-06-28 | 2018-09-28 | 中国汽车工程研究院股份有限公司 | Thermocouple is layouted tool and points distributing method |
| CN108593127B (en) * | 2018-06-28 | 2023-07-28 | 中国汽车工程研究院股份有限公司 | Thermocouple point distribution tool and point distribution method |
| CN108627264A (en) * | 2018-07-06 | 2018-10-09 | 中国核动力研究设计院 | A kind of inside pipe wall temperature Multi point measuring apparatus and its measurement method |
| CN108627264B (en) * | 2018-07-06 | 2020-04-07 | 中国核动力研究设计院 | Pipe inner wall temperature multi-point measuring device and measuring method thereof |
| CN108801485A (en) * | 2018-07-25 | 2018-11-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Temperature detector and cooking stove with it |
| US11555747B2 (en) | 2020-06-30 | 2023-01-17 | Battelle Energy Alliance, Llc | Multi-core high-temperature, irradiation-resistant thermocouple, and related methods |
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