CN209541949U - A kind of coaxial block of tubular thermocouple assay furnace - Google Patents
A kind of coaxial block of tubular thermocouple assay furnace Download PDFInfo
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- CN209541949U CN209541949U CN201920066267.9U CN201920066267U CN209541949U CN 209541949 U CN209541949 U CN 209541949U CN 201920066267 U CN201920066267 U CN 201920066267U CN 209541949 U CN209541949 U CN 209541949U
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- blind hole
- assay furnace
- thermocouple
- metal cylinder
- furnace
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Abstract
The utility model discloses a kind of coaxial block of tubular thermocouple assay furnace, including metal cylinder, the first blind hole and the second blind hole；There is the first blind hole being axially distributed on one end face of metal cylinder, the bottom centre of first blind hole is equipped with positioning groove, there is the second blind hole being axially distributed on the other end of the metal cylinder, the positioning ring being axially distributed is provided in the second blind hole, is provided with spoke on the outside of positioning ring.The utility model block cooperates tubular thermocouple assay furnace for the calibration of cheap metal thermocouple, not only improve the thermal field uniformity of assay furnace, also according to the diabatic process of assay furnace heating, standard couple and the included thermocouple of assay furnace is coaxially arranged, reduce the temperature difference of the two, it shortens assay furnace heating and stablizes the time, improve the calibration efficiency of cheap metal thermocouple.
Description
Technical field
The utility model relates to tubular thermocouple assay furnace field, espespecially a kind of coaxial samming of tubular thermocouple assay furnace
Block.
Background technique
Process using tubular thermocouple assay furnace calibration cheap metal thermocouple is as follows, will be calibrated thermocouple and set first
The standard couple of protection pipe ties up bunchy, and the measurement end for being calibrated thermocouple is uniformly distributed one around protection pipe when tying up
Week, the block bottom being inserted into assay furnace are calibrated；Secondly it is being calibrated within the scope of thermocouple measuring temperature, is choosing
Temperature spot is calibrated, calibration process heats up progress point by point from low temperature to high temperature.Usually in temperature-rise period, thermoelectricity is carried by assay furnace
It is even to carry out measurement of furnace temperature, and the input signal as calibrating furnace control system, to adjust the heating power of assay furnace.When furnace temperature is inclined
When leaving school quasi- temperature spot in a certain range, when such as ± 5 DEG C, furnace temperature changes to be measured by standard couple, and is controlled as assay furnace
The input signal of system, to adjust the heating power of assay furnace.Finally when the furnace temperature that standard couple measures deviates calibration temperature
Within ± 5 DEG C of point, and furnace temperature variation per minute be no more than 0.2 DEG C when start to calibrate.
Due to standard hot even summation assay furnace carry thermocouple placement location in block difference, cause assay furnace to
The thermal resistance of its diabatic process is different, thus deviates calibration temperature spot in a certain range when assay furnace carries the furnace temperature that thermocouple measures
Interior, furnace temperature changes when being measured by standard couple, and standard hot even summation assay furnace carries the temperature of thermocouple, and there are larger differences, makes
It obtains assay furnace heating power regulating system and larger fluctuation occurs, taking more time stablizes furnace temperature, has seriously affected cheap metal
The calibration efficiency of thermocouple.
In the prior art, " a kind of tubular thermocouple assay furnace use is equal by Chinese utility model patent ZL 201220353972.5
Warm block " a kind of tubular thermocouple assay furnace block is disclosed, the block is " for the work inspection of cheap metal thermocouple
It is fixed, to improve tubular thermocouple assay furnace thermal field uniformity, improve the technical indicator of axial, radial thermal field ", but do not relate to
Assay furnace heating and temperature control process.In fact, block disclosed in the utility model patent, assay furnace carries thermocouple and mark
There are relatively big differences for heat-transfer path between quasi- thermocouple and assay furnace, thus in assay furnace temperature-rise period two thermocouples temperature
There are larger differences, and after furnace temperature, which changes, to be measured by standard couple, larger fluctuation, shadow occurs in assay furnace heating power regulating system
The calibration efficiency of cheap metal thermocouple is rung.
Utility model content
The technical problems to be solved in the utility model is that assay furnace carries thermocouple and standard in assay furnace temperature-rise period
There are larger differences for the temperature of thermocouple, and after furnace temperature, which changes, to be measured by standard couple, assay furnace heating power regulating system goes out
Existing larger fluctuation, affects the calibration efficiency of cheap metal thermocouple, the shortcomings that in order to overcome the prior art, now provides a kind of tubular type
The coaxial block of electric thermo-couple test furnace.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:
The utility model provides a kind of coaxial block of tubular thermocouple assay furnace, including metal cylinder, first blind
Hole and the second blind hole；The first blind hole being axially distributed is provided on one end face of metal cylinder, in the bottom of the first blind hole
Heart position is provided with positioning groove；The other end of the metal cylinder is provided with the second blind hole being axially distributed, the second blind hole
It is inside provided with positioning ring, is provided with spoke on the outside of positioning ring.
As a kind of optimal technical scheme of the utility model, the metal cylinder, the first blind hole, is determined at the second blind hole
Position groove and positioning ring coaxial arrangement.
As a kind of optimal technical scheme of the utility model, the metal cylinder is made of nichrome material,
The outer diameter of metal cylinder is 2mm smaller than the internal diameter of tubular thermocouple assay furnace.
As a kind of optimal technical scheme of the utility model, the positioning ring is mounted in the second blind hole.
As a kind of optimal technical scheme of the utility model, standard couple, positioning ring are set in the positioning groove
Inside is arranged assay furnace and carries thermocouple.
The utility model beneficial effect achieved is: the utility model block cooperation tubular thermocouple assay furnace is used for
The calibration of cheap metal thermocouple not only improves the thermal field uniformity of assay furnace, also according to the diabatic process of assay furnace heating, leads to
It crosses block standard couple and the included thermocouple of assay furnace is coaxially arranged, reduces the temperature difference of the two, shorten assay furnace
Heating and stable time, improve the calibration efficiency of cheap metal thermocouple.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is the front view schematic diagram of the coaxial block of the utility model embodiment 1；
Fig. 2 is the left view schematic diagram of the coaxial block of the utility model embodiment 1；
Fig. 3 is the right view schematic diagram of the coaxial block of the utility model embodiment 1；
Fig. 4 is the front view schematic diagram of the coaxial block of the utility model embodiment 2；
Fig. 5 is the left view schematic diagram of the coaxial block of the utility model embodiment 2.
Figure label: 1, metal cylinder；2, the first blind hole；3, positioning groove；4, the second blind hole；5, positioning ring；6, spoke
Item.
Specific embodiment
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment: as shown in Figs. 1-5, a kind of coaxial block of tubular thermocouple assay furnace, including metal cylinder 1,
First blind hole 2 and the second blind hole 4；The first blind hole 2 being axially distributed is provided on 1 one end face of metal cylinder, first is blind
The bottom centre position in hole 2 is provided with positioning groove 3；The other end of the metal cylinder 1 is provided with second be axially distributed
Blind hole 4 is provided with positioning ring 5 in second blind hole 4, spoke 6 is provided on the outside of positioning ring 5.
Further, the metal cylinder 1, the first blind hole 2, the second blind hole 4, positioning groove 3 and positioning ring 5 are coaxially set
It sets.
Further, the metal cylinder 1 is made of nichrome material, and the outer diameter of metal cylinder 1 compares tubular type
The small 2mm of the internal diameter of electric thermo-couple test furnace.
Further, the positioning ring 5 is mounted in the second blind hole 4.
Further, standard couple is set in the positioning groove 3, and setting assay furnace carries thermoelectricity on the inside of positioning ring 5
It is even.
It is specific:
Embodiment 1
As shown in Figure 1-3, respectively a kind of main view, left view and the right side of the coaxial block of tubular thermocouple assay furnace
View, the block include metal cylinder 1, are provided with the second blind hole 4 on 1 one end face of metal cylinder, and described second
Positioning ring 5 is equipped in blind hole 4, the positioning ring 5 is fixed on metal cylinder 1 by spoke 6.The metal cylinder 1
Be provided with the first blind hole 2 on other end, be provided with positioning groove 4 on the center bottom surface of first blind hole 2, be calibrated thermocouple with
The standard couple of set protection pipe ties up bunchy, and the bottom of the first blind hole 2 of insertion is calibrated, and thermocouple will be calibrated when tying up
Measurement end be uniformly distributed one week around protection pipe, standard couple is in the center of thermocouple beam, the as standard of positioning groove 4
The reference position of thermocouple protective casing end.Metal cylinder 1, the first blind hole 2, the second blind hole 4, positioning groove 3 and positioning
Ring 5 is coaxial.Thus assay furnace carries thermocouple and standard couple is coaxial, and the heat transfer that assay furnace electric heating wire generates is to inspection
Determine in the process that furnace carries thermocouple and standard couple, the heat that two thermocouples receive is close, temperature also close to.And
And there are the gaps of certain distance between positioning ring 5 and metal cylinder 1, so that assay furnace carries thermocouple and standard couple
Locating environment is more nearly, and the temperature deviation of two thermocouples is smaller.When assay furnace carries the temperature departure calibration temperature of thermocouple
In a certain range, furnace temperature changes degree point when being measured by standard couple, and assay furnace heating power regulating system is not in big
Fluctuation, furnace temperature is steady, can meet calibration condition requirement faster, improve the calibration efficiency of cheap metal thermocouple.
Embodiment 2
Such as figure, shown in 4-5, the respectively a kind of main view and left view of the coaxial block of tubular thermocouple assay furnace.
Difference from Example 1 is that positioning ring 5 is directly connect with metal cylinder 1, simplifies the processing and manufacturing of coaxial block
Process.
Finally, it should be noted that the above is only the preferred embodiment of the utility model, it is not limited to practical
It is novel, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all include
It is within the protection scope of the utility model.
Claims (5)
1. a kind of coaxial block of tubular thermocouple assay furnace, which is characterized in that including metal cylinder (1), the first blind hole
(2) and the second blind hole (4)；It is provided with the first blind hole (2) being axially distributed on (1) one end face of metal cylinder, first is blind
The bottom centre position in hole (2) is provided with positioning groove (3)；The other end of the metal cylinder (1) is provided with axial distribution
The second blind hole (4), is provided with positioning ring (5) in the second blind hole (4), is provided with spoke (6) on the outside of positioning ring (5).
2. a kind of coaxial block of tubular thermocouple assay furnace according to claim 1, which is characterized in that the metal
Cylindrical body (1), the first blind hole (2), the second blind hole (4), positioning groove (3) and positioning ring (5) coaxial arrangement.
3. a kind of coaxial block of tubular thermocouple assay furnace according to claim 1, which is characterized in that the metal
Cylindrical body (1) is made of nichrome material, and the outer diameter of metal cylinder (1) is smaller than the internal diameter of tubular thermocouple assay furnace
2mm。
4. a kind of coaxial block of tubular thermocouple assay furnace according to claim 1, which is characterized in that the positioning
Ring (5) is mounted in the second blind hole (4).
5. a kind of coaxial block of tubular thermocouple assay furnace according to claim 1, which is characterized in that the positioning
Standard couple is set in groove (3), and setting assay furnace carries thermocouple on the inside of positioning ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920066267.9U CN209541949U (en) | 2019-01-16 | 2019-01-16 | A kind of coaxial block of tubular thermocouple assay furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920066267.9U CN209541949U (en) | 2019-01-16 | 2019-01-16 | A kind of coaxial block of tubular thermocouple assay furnace |
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| Publication Number | Publication Date |
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| CN209541949U true CN209541949U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920066267.9U Active CN209541949U (en) | 2019-01-16 | 2019-01-16 | A kind of coaxial block of tubular thermocouple assay furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024265A (en) * | 2019-11-26 | 2020-04-17 | 山东磐然仪器集团有限公司 | Method for checking stability of thermocouple standard of tube furnace |
-
2019
- 2019-01-16 CN CN201920066267.9U patent/CN209541949U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024265A (en) * | 2019-11-26 | 2020-04-17 | 山东磐然仪器集团有限公司 | Method for checking stability of thermocouple standard of tube furnace |
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