CN205991953U - A kind of displacement measurement system of the vertical high temperature thermal dilatometer - Google Patents
A kind of displacement measurement system of the vertical high temperature thermal dilatometer Download PDFInfo
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- CN205991953U CN205991953U CN201620893336.XU CN201620893336U CN205991953U CN 205991953 U CN205991953 U CN 205991953U CN 201620893336 U CN201620893336 U CN 201620893336U CN 205991953 U CN205991953 U CN 205991953U
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Abstract
The utility model discloses a kind of displacement measurement system of the vertical high temperature thermal dilatometer, it is arranged in rigid support mechanism including vertical test body of heater, test body of heater, it is provided with cooling jacket between rigid support mechanism and trial furnace body case, trial furnace lower furnace portion lays load sample platform, one or more samples are placed on load sample platform, each sample top connects a set of displacement measurement mechanism for measuring sample expansion displacement and the displacement gravity balance device for displacement measurement mechanism balance.This utility model can realize many sample measurements of same heat, improves measurement efficiency；Vertical, vertically lay sample, it is entirely avoided the impact of axial bending that sample produces at high temperature deformation；The gravity balance device of displacement measurement system and the gravity balance device showing poor pipe eliminate the gravity impact of respective system respectively, and measurement is more accurate；The little sample of achievable length and the test lengthening sample.
Description
Technical field
This utility model belongs to test instrunment class, is related to test the position of the high-temperature heat expansion instrument that refractory material heats linear expansivity
Shift measurement system, particularly to a kind of displacement measurement system of vertical high-temperature dilatometer.
Background technology
Expanding with heat and contract with cold is the universal phenomenon of nature, is also the base attribute of engineering material.Industrial Stoves are typically normal
Furnace lining is built by laying bricks or stones, with the rising of furnace temperature, furnace lining produces thermal expansion under temperature.In order to offset the thermal stress expanding generation, body of heater is caused
Destruction, need to reserve expansion gap.The hot expansibility of material is reserved dilatation joint size and structure in furnace design and brickwork
Key parameter.The quality of refractory material thermal shock stability, closely related with the thermal expansivity of material itself；Composite and many
In phase material, whether the thermal expansivity of various component materials mates, and is the key that can composite reach design performance；Material
Hot expansibility be also simultaneously material behavior, internal structure, phase transformation, defect etc. external reflection.
Sample is heated to predetermined test temperature, test sample with the heating rate of regulation by the characterizing method of thermal expansion
The length varying value raising with temperature, the ratio of this value and sample original length, the as linear expansivity of sample, linear expansivity with
The ratio of its temperature range temperature gap, is the average coefficient of linear expansion of this temperature range.
The thermal expansion of material generally refers to, and under naturally horizontally state, is not acted on by external force, is added with the heating rate of regulation
Heat examination sample, the length of sample raises and the situation of change of generation with temperature.Thus, common thermal dilatometer is horizontal expander
Instrument.
Horizontal expander instrument, typically has push rod method and two kinds of telescope method, telescope method is rarely used, thus, common
Horizontal expander instrument be push rod method.
Structure and its displacement measurement system of " push rod method thermal dilatometer " heating furnace is shown in GB/T 7320-2008 standard
Unite and be：Equipped with horizontal body of heater on metab, the middle part of horizontal body of heater is to place dress sample along along axis transverse hearth, burner hearth
Manage, in dress sample pipe, load sample, one end of sample is close to fill the fixing end of sample pipe, and the other end is close to push rod that can be freely movable
Top, sample thermal expansion line change displacement transducer, displacement transducer are passed to by push rod（To cool down water cooling）It is located at
Outside body of heater.
In addition to horizontal expander instrument, also vertical thermal dilatometer.National standard《GB/T 7320-2008 refractory material
Thermal expansion test method》In " showing poor method thermal dilatometer ", as vertical thermal dilatometer, its displacement measurement structure（When being arranged on
During the bottom of test body of heater）：Pressure bar, Upper gasket, sample, lower gasket, support stick and interior show difference pipe, outward show difference pipe, be installed in
In bell type heating furnace.Inside show poor pipe on the basis of the lower surface of Upper gasket, show poor pipe below sample, with lower gasket following table outward
On the basis of face, sample is diameter 50mm, high 50mm, the cylinder of center-hole diameter 12～13mm.I.e. whole displacement measurement system
It is the lower section in bell-type trial furnace.Due to upper pressure bar, Upper gasket, sample, lower gasket, support stick will be kept and passes through support stick
The outer of centre bore shows difference pipe and shows in poor tube hub hole and lower gasket centre bore sample centre bore that difference pipe is equivalent by showing outward
Axle, is a relatively difficult thing；Particularly using huge bell-type test body of heater as loading force.This structure is only suitable in load
The test system of lower thermal expansion；And a center band φ can only be tested every time（12～13）Φ 50mm × the 50mm's of mm through hole
Sample, testing efficiency is low.
Horizontal thermal expansion, due to being a cantilever design, sample is arranged in the load sample pipe of cantilever position, when furnace temperature rises to
During high temperature, load sample pipe will produce bending with displacement measurement push rod under its deadweight and sample, the collective effect of bracket deadweight and become
Shape, leads to the measurement failure that straight line line expands sample vertically.
The horizontal thermal dilatometer of even multiple small samples, by acting on that multiple samples and sample mount are conducted oneself with dignity, load sample
Pipe is still easily bent deformation, thus such horizontal thermal dilatometer is only used for 1500 DEG C or lower temperature.
The horizontal thermal expansion of bulk specimen is equally also only used for 1500 DEG C or lower temperature.
Displacement measurement mechanism is installed on to the vertical thermal dilatometer of trial furnace upper of furnace body, in its measuring mechanism, due to
Displacement measurement bar, displacement transducer etc. all can apply the load of its own weight to sample；It is mounted with to show the mechanism of poor bar, show difference
Bar own wt and the weight of frame for movement, can be to showing poor bar imposed load；The thermal expansion to not imposed load for these load（?
In the case of especially not indicating, the thermal expansion of test material is it is simply that refer to the thermal expansion of not imposed load）Test is unfavorable；And
For the thermal expansion of imposed load, this value is unfavorable for the calculating of force value and the accuracy of actual loaded again.
At present, still there is no the report of vertical thermal dilatometer displacement measurement system, more do not test the Vertical Heat of multiple samples
The report of dilatometer displacement measurement system.Thus, research test refractory material heats the position of the high-temperature heat expansion instrument of linear expansivity
Shift measurement system, particularly a kind of displacement measurement system of vertical high-temperature dilatometer, there is important value.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide that a kind of measurement efficiency is high, measurement range greatly with
And measure the displacement measurement system of accurate the vertical high temperature thermal dilatometer.
The purpose of this utility model can employ the following technical solutions to realize：A kind of displacement of the vertical high temperature thermal dilatometer
Measuring system, including vertical test body of heater, test body of heater be arranged in rigid support mechanism, rigid support mechanism with test body of heater
It is provided with cooling jacket between shell, trial furnace lower furnace portion lays load sample platform, load sample platform places one and above sample,
Each sample top connects a set of displacement measurement mechanism for measuring sample expansion displacement and puts down for displacement measurement mechanism
The displacement gravity balance device of weighing apparatus.
Described displacement measurement mechanism, including the transmission pole connecting with sample upper end, gripping block and displacement measurement element；Folder
The side of tight block is connected firmly with transmission pole phase, and opposite side is matched with sliding pair A；Sliding pair A is fixed in frame A by slide；
Displacement measurement element is fixed on the side of lock sleeve, and the opposite side of lock sleeve is provided with screw, is installed with fine setting screw rod, screw in screw
With fine setting screw rod composition screw pair, after the upper end of fine setting screw rod is passed through the screw of lock sleeve, it is fixed on the flat of fine setting fixed mount
Hole in the middle part of the part of face；Fine setting fixed mount is a bracket of right angle type, and the bottom of its vertical bar is fixed on upper plate upper surface, its
There is a hole at the middle part of planar section, and fine setting screw rod passes through this hole；Fine setting screw rod lower end extends the top of upper plate, and upper end is installed
The vernier knob of micro-adjusting mechanism；This vernier knob and fine setting fixed mount, lock sleeve, fine setting screw rod composition micro-adjusting mechanism.
The described displacement gravity balance device for displacement measurement mechanism balance, including steel wire rope, balanced weight A and set
It is arranged on the pulley A of test upper of furnace body, steel wire rope is connected with the upper top being gripping block in sample displacement measurement system,
Steel wire rope is bypassed pulley A and is connected with balanced weight A.
The Shi Cha mechanism being provided with described test body of heater, described Shi Cha mechanism includes showing difference pipe, is used for showing difference pipe
The sliding pair B of mobile guide and the bascule showing poor gravity, show that difference pipe is vertically placed in load sample platform upper surface, show poor pipe top
End is connected with upper plate, and sliding pair B is fixed in frame B by its axle；Described；The described bascule bag showing poor gravity
Enclosing wire rope, balanced weight B and the pulley B being arranged on test upper of furnace body, the correspondence position of both sides on steel wire rope and upper plate
Connect, steel wire rope is bypassed pulley B and is connected with balanced weight B
Described load sample platform, by single or multiple lift sample loading plate（Pipe or rod）Composition, increases and decreases sample loading plate（Pipe, rod）Quantity,
Then can achieve the little sample of length（As：25mm）With lengthening sample（As：250mm）Test.
Advantage of the present utility model：(1) one or more samples can be laid, realize many sample measurements of same heat, carry
High measurement efficiency.(2) vertical, vertically lay sample, it is entirely avoided the shadow of axial bending that sample produces at high temperature deformation
Ring, achievable small bore（As：75mm2）To heavy in section（As：62500mm2）The test of sample.(3) the gravity of displacement measurement system
Bascule and the gravity balance device showing poor pipe eliminate the gravity impact of respective system respectively, realize zero load（Or non-zero
Load）The accurate loading of load or elimination during lower thermal expansion test, measurement is more accurate.(4) load sample platform is by single or multiple lift sample loading plate
（Pipe or rod）Composition, reduces sample loading plate or adjusts the height of fixed mechanism, adjusts transmission pole and show difference pipe, then can achieve that length is little
Sample（As：25mm）With lengthening sample（As：250mm）Test.
Brief description
Accompanying drawing 1 is that the double ancient cooking vessel aggregate structure of single sample of the present utility model faces generalized section.
Accompanying drawing 2 faces generalized section for single sample list ancient cooking vessel structure of the present utility model.
Accompanying drawing 3 is four sample five ancient cooking vessel aggregate structure schematic diagram of the present utility model.
In figure：1st, vernier knob, 2, displacement measurement element, 3, pulley A, 4, lock sleeve, 5, fine setting screw rod, 6, balanced weight A,
7th, sliding pair A, 8, gripping block, 9, frame A, 10, fine setting fixed mount, 11, upper plate, 12, sliding pair B, 13, transmission pole, 14, examination
Sample, 15, show difference pipe, 16, heater element, 17, load sample platform, 18, rigid support mechanism, 19, body of heater, 20, balanced weight B, 21, pulley
B, 22, frame B, 23, thermocouple, 24, furnace lining, 25, cooling jacket.
Specific embodiment
In conjunction with accompanying drawing, specific embodiment of the utility model is described.
Embodiment 1：A kind of double vertical thermal dilatometer of ancient cooking vessel structure of single sample.
As shown in Figure 3, it is a kind of double vertical thermal dilatometer of ancient cooking vessel structure of single sample, one sample 14 of setting and one show difference
Pipe 15, forms double ancient cooking vessel structures.By national standard《GB/T 7320-2008 refractory material thermal expansion test method shows difference
Method》Detection.It includes body of heater 19, and test body of heater is arranged in rigid support mechanism 18, rigid support mechanism 18 and body of heater shell it
Between be provided with cooling jacket 25, lay load sample platform 17 under trial furnace burner hearth, described load sample platform 17, by single or multiple lift sample loading plate
（Pipe or rod）Composition, increases and decreases sample loading plate（Pipe, rod）Quantity, then can achieve the little sample of length（As：25mm）With lengthening sample
（As：250mm）Test.Load sample platform 17 described in the present embodiment is made up of two pieces of sample loading plate superpositions, and load sample platform 17 lays one
Individual sample 14, corresponding sample 14 is all equipped with the bascule of sample displacement measurement system and measuring system, described test body of heater
On the Shi Cha mechanism that is provided with, described Shi Cha mechanism include showing poor pipe 15, for show the sliding pair B12 of poor pipe mobile guide with
And show the bascule of poor gravity, show that poor pipe 15 is vertically placed in load sample platform 17 upper surface, upper plate is set above body of heater 19
11, show that poor pipe 15 top is connected with upper top 11, sliding pair B12 is fixed in frame B22 of upper plate 11 both sides；Described shows difference
Gravity balance device, including steel wire rope, balanced weight B 20 and be arranged on test upper of furnace body pulley B 21, steel wire rope with upper
On top board 11, the correspondence position of both sides connects, and steel wire rope is bypassed pulley B 21 and is connected with balanced weight B 20.Adjustment cuts or polish jade with an emery wheel B 20
Weight so as to the balanced showing poor pipe 15, upper plate 11 micro-adjusting mechanism.
Described sample displacement measurement system, including the transmission pole 13 connecting with sample 14 upper end, gripping block 8 and displacement
Measuring cell 2, frame A 9, lock sleeve 4, the described side of gripping block 8 is mutually connected firmly with transmission pole 13, and opposite side is connected with
Sliding pair A 7；Sliding pair A 7 is fixed in frame A 9；Displacement measurement element 2 is fixed on the side of lock sleeve 4, lock sleeve
4 opposite side is provided with screw, is installed with fine setting screw rod 5, screw and fine setting screw rod 5 composition screw pair, finely tunes screw rod 5 in screw
Upper end be passed through the screw of lock sleeve 4 after, be fixed on fine setting fixed mount 10 planar section in the middle part of hole；Described fine setting
Fixed mount 10 is a bracket of right angle type, and the bottom of its vertical bar is fixed on upper plate 11 upper surface, the middle part of its planar section
There is a hole, fine setting screw rod 5 passes through and is fixed on this hole；Fine setting screw rod 5 lower end extends the top of upper plate 11, and upper end is pacified
Dress vernier knob 1；This vernier knob 1 and fine setting fixed mount 10, lock sleeve 4, fine setting screw rod 5 composition micro-adjusting mechanism.
The displacement gravity balance device of described measuring system, including steel wire rope, balanced weight A 6 and be arranged on trial furnace
The pulley A 3 on body top, steel wire rope is connected with the upper top being gripping block 8 in sample displacement measurement system, steel wire rope around
Cross pulley A 3 to be connected with balanced weight A 6.
Concrete operation step is as follows：
（1）Show that poor pipe 15 and transmission pole 13 select identical material, the Al of same process production2O3
Content is not less than 99.5% alundum tube.
（2）One sample 14 is laid on load sample platform 17, sample 14 is laid transmission pole 13, displacement measurement element respectively
2, wherein transmission pole 13 and gripping block 8 connects firmly, and displacement measurement element 2 is fixed on the side of lock sleeve 4, tightens the opposite side of set 4
Connect firmly micro-adjusting mechanism, micro-adjusting mechanism is made up of vernier knob 1, fine setting fixed mount 10, tight lock tube 4, fine setting screw rod 5.
（3）Lay in the center vertical of load sample platform 17 upper surface and show poor pipe 15, show top and upper plate 11 phase of poor pipe 15
Connection, upper plate 11 both sides are provided with sliding pair B 12, arrange organic frame B 25 above trial furnace, and sliding pair B 12 is fixed on frame
On B 25；Upper plate 11 with show poor gravity balance device and be connected, show that poor gravity balance device is the right of both sides on upper plate 11
Connection flexible wire ropes, steel wire rope on position is answered to bypass pulley B 21 and be connected with balanced weight B 20.Adjustment cuts or polish jade with an emery wheel the weight of B 20
Amount so as to the balanced showing poor pipe 15, upper plate 11 and micro-adjusting mechanism.
（4）Turn vernier knob 1, makes fine setting screw rod 5 rotate, and drives tight lock tube 4 to move up and down by screw pair, drives simultaneously
Adjusting the displacement measurement element 2 being connected is in trickle movement up and down, makes displacement measurement element 2 show " initial " position.
（5）Start to test, with（4～5）DEG C/heating of the heating rate of min, until 1700 DEG C of test temperature.
（6）When heating up, sample 14 and transfer tube 13 expand, and promote the thimble of displacement measurement element 2 to shrink；Meanwhile, show
Difference pipe 15 also expands, and promotes and moves on upper plate 11, fine setting fixed mount 10, fine setting screw rod 5, lock sleeve 4, makes displacement measurement element 2
Top on move, the bottom thimble of displacement measurement element 2 just relatively " stretching out ", " has shown difference " swell increment of transmission pole 13.
（7）It is spaced the reading of record displacement measurement element 2 by uniform temperature and calculate the expansion or shrinkage of sample 14.
Embodiment 2:A kind of vertical thermal dilatometer of single sample list ancient cooking vessel structure.
As shown in Figure 2, it is on the basis of embodiment 1, a sample 14 is set, no longer sets up and show poor pipe 15, formed
Single ancient cooking vessel structure.Show poor method detection by non-.
Embodiment 3：A kind of four sample five ancient cooking vessel reunion the vertical high temperature thermal dilatometer.
As shown in Figure 3, on the basis of embodiment 1, the center of load sample platform 17 is laid one and shows poor pipe 15,
Show poor pipe 15 in the center of four samples 14, four
Sample 14 and one show that poor pipe 15 forms five ancient cooking vessel aggregate structures.
Claims (6)
1. a kind of displacement measurement system of the vertical high temperature thermal dilatometer, including vertical test body of heater（19）, test body of heater be arranged on
Rigid support mechanism（18）On, rigid support mechanism（18）It is provided with cooling jacket and trial furnace body case between（26）, test
Stove lower furnace portion lays load sample platform（17）, load is characterized in that：In load sample platform（17）On be placed with sample（14）, each sample（14）
Top is connected with the displacement measurement mechanism for measuring sample expansion displacement and the displacement weight for displacement measurement mechanism balance
Thrust balancing device.
2. the displacement measurement system of the vertical high temperature thermal dilatometer according to claim 1, is characterized in that：Described displacement is surveyed
Measuring mechanism, including with sample（14）The transmission pole that upper end connects（13）, gripping block（8）With displacement measurement element（2）；Gripping block
（8）Side and transmission pole（13）Mutually connect firmly, opposite side and sliding pair A（7）Match；Sliding pair A（7）It is fixed on by slide
Frame A（9）On；Displacement measurement element（2）It is fixed on lock sleeve（4）Side, lock sleeve（4）Opposite side be provided with screw, spiral shell
In the hole is installed with fine setting screw rod（5）, screw with fine setting screw rod（5）Composition screw pair, finely tunes screw rod（5）Upper end be passed through lock sleeve
（4）Screw after, be fixed on fine setting fixed mount（10）Planar section in the middle part of hole；Fine setting fixed mount（10）Prop up for a square
Frame, the bottom of its vertical bar is fixed on upper plate（11）On upper surface, there is a hole at the middle part of its planar section, finely tunes screw rod
（5）Through this hole；Fine setting screw rod（5）Lower end extends upper plate（11）Top, upper end install micro-adjusting mechanism vernier knob
（1）；This vernier knob（1）With fine setting fixed mount（10）, lock sleeve（4）, fine setting screw rod（5）Composition micro-adjusting mechanism.
3. the displacement measurement system of the vertical high temperature thermal dilatometer according to claim 2, is characterized in that：Described for position
The displacement gravity balance device of shift measurement balance of mechanism, including steel wire rope, balanced weight A（6）And it is arranged on test upper of furnace body
Pulley A（3）, steel wire rope be the gripping block in sample displacement measurement system（8）Upper top connect, steel wire rope bypasses cunning
Wheel A（3）With balanced weight A（6）It is connected.
4. the displacement measurement system of the vertical high temperature thermal dilatometer according to claim 1, is characterized in that：Described trial furnace
The Shi Cha mechanism being provided with body, described Shi Cha mechanism includes showing difference pipe（15）, for showing the sliding pair B of poor pipe mobile guide
（12）And show the bascule of poor gravity, show difference pipe（15）Vertically it is placed in load sample platform（17）Upper surface, shows difference pipe（15）Top
End and upper plate（11）It is connected, sliding pair B（12）Frame B is fixed on by its axle（22）On；The described balance showing poor gravity
Device includes steel wire rope, balanced weight B（20）And it is arranged on the pulley B of test upper of furnace body（21）, steel wire rope and upper plate
（11）The correspondence position of upper both sides connects, and steel wire rope bypasses pulley B（21）With balanced weight B（20）It is connected.
5. the displacement measurement system of the vertical high temperature thermal dilatometer according to claim 1, is characterized in that：In load sample platform（17）
It is provided with four samples（14）, show difference pipe（15）It is arranged on four samples（14）Center.
6. the displacement measurement system of the vertical high temperature thermal dilatometer according to claim 1, is characterized in that：Described load sample platform
（17）, it is made up of the sample loading plate on a layer or a layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620893336.XU CN205991953U (en) | 2016-08-17 | 2016-08-17 | A kind of displacement measurement system of the vertical high temperature thermal dilatometer |
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| CN201620893336.XU CN205991953U (en) | 2016-08-17 | 2016-08-17 | A kind of displacement measurement system of the vertical high temperature thermal dilatometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226347A (en) * | 2016-08-17 | 2016-12-14 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of displacement measurement system of the vertical high temperature thermal dilatometer |
| CN109765262A (en) * | 2019-02-26 | 2019-05-17 | 江苏弘开传感科技有限公司 | A kind of thermal expansion coefficient measuring instrument |
-
2016
- 2016-08-17 CN CN201620893336.XU patent/CN205991953U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226347A (en) * | 2016-08-17 | 2016-12-14 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of displacement measurement system of the vertical high temperature thermal dilatometer |
| CN106226347B (en) * | 2016-08-17 | 2023-09-08 | 中钢集团洛阳耐火材料研究院有限公司 | Displacement measurement system of vertical high-temperature thermal expansion instrument |
| CN109765262A (en) * | 2019-02-26 | 2019-05-17 | 江苏弘开传感科技有限公司 | A kind of thermal expansion coefficient measuring instrument |
| CN109765262B (en) * | 2019-02-26 | 2024-01-12 | 陈艺征 | Thermal expansion coefficient measuring instrument |
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