CN208937406U - A kind of adjustable tensile test apparatus of low temperature - Google Patents
A kind of adjustable tensile test apparatus of low temperature Download PDFInfo
- Publication number
- CN208937406U CN208937406U CN201821678969.4U CN201821678969U CN208937406U CN 208937406 U CN208937406 U CN 208937406U CN 201821678969 U CN201821678969 U CN 201821678969U CN 208937406 U CN208937406 U CN 208937406U
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- CN
- China
- Prior art keywords
- liquid nitrogen
- temperature
- insulation barrel
- test apparatus
- tensile test
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a kind of adjustable tensile test apparatus of low temperature, including temperature holding meanss, liquid nitrogen feedway, stretching device and temperature control system.Liquid nitrogen is transported to temperature holding meanss by liquid nitrogen pipes by liquid nitrogen feedway, and the temperature in the adjustable insulation barrel of temperature control system, stretching device clamping workpiece is stretched.This experimental rig is easy to operate, temperature adjustable, and rationally, test effect is accurate, can be placed in existing Material Testing Machine, does not need to be transformed current material testing machine, has saved cost for design.
Description
Technical field
The utility model relates to a kind of low-temperature tensile test device systems, belong to material stretching mechanical property testing field.
Background technique
With the continuous development of processing manufacturing industry, low-temperature deep is processed into one of hot spot in recent years.Material is probed into exist
Tensile mechanical properties under Different hypothermia environment are to instructing low temperature process important in inhibiting, and the domestic low temperature provided is drawn at present
It is complicated to stretch experimental rig general structure, higher cost, and need to be transformed current material testing machine.
Summary of the invention
In order to solve the above technical problems, the utility model provides a kind of universal test device for Material Testing Machine,
The device can provide a metastable environment temperature, and will not influence existing stretcher and operate normally, and can complete
Tension test under different temperatures (0 DEG C--196 DEG C).
To reach above-mentioned purpose, the technical solution of the utility model is as follows:
A kind of adjustable tensile test apparatus of low temperature, characterized in that including temperature holding meanss, temperature control system, liquid
Nitrogen feedway and stretching device, the temperature holding meanss include upper insulation barrel (7) and lower insulation barrel (8), upper insulation barrel
(7) by upper stainless steel casing (11), thermal insulation material (12), upper stainless steel inner casing (13) composition, lower insulation barrel (8) is by lower stainless steel
Shell (22), thermal insulation material (12), lower stainless steel inner casing (23) are constituted, and upper and lower insulation barrel is connected by bolt (9) and nut (10)
It connects；The temperature control system is by upper temperature sensor (14), lower temperature sensor (20), upper instrument board (6), lower instrument board
(5), the collet temperature feedback measured is obtained number to instrument board by control centre (4) and flow valve (3) composition, temperature sensor
Signal is simultaneously fed back in control centre (4), to control flow valve (3) supply liquid nitrogen；The liquid nitrogen feedway includes liquid nitrogen container
(1), liquid nitrogen pipeline (2), liquid nitrogen copper pipe (17) and atomizer (18)；The stretching device include couple with stretching-machine it is upper
Connecting rod (15), lower connecting rod (21), upper grip (16) and lower collet (19).As the preferred embodiment of this case, insulation barrel is by upper
Insulation barrel (7) and lower insulation barrel (8) pass through bolt (9) and nut (10) upper-lower seal connection composition.
It as the preferred embodiment of this case, is set in insulation barrel there are four symmetrically placed liquid nitrogen copper pipe (17), on each copper pipe
There are three atomizer (18).
As the preferred embodiment of this case, lower insulation barrel (8) is equipped with conduit path, and liquid nitrogen is inputted in insulation barrel by pipeline
It is docked with four liquid nitrogen copper pipes (17).
As the preferred embodiment of this case, flow valve (3) are equipped between liquid nitrogen pipeline (2), can be controlled by control system
Liquid nitrogen flow.
As the preferred embodiment of this case, upper insulation barrel (7) is equipped with the position for placing upper temperature sensor (14), lower insulation barrel
(8) it is equipped with the position for placing temperature sensor (20), temperature signal can be changed into digital signal and feed back to control centre
(4).
The beneficial effects of the utility model are:
The utility model is conducive to clamping using upper and lower two barrels threaded connections, good airproof performance, and heat insulation effect is good；Using four
Copper pipe is atomized liquid nitrogen, with the feature that temperature adjustment is uniform, fast and effective；Design structure is simple, production easy to process, installation, adjustment
It is convenient.
Detailed description of the invention
Illustrate the utility model embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.
Fig. 1 is the external structure of the adjustable tensile test apparatus of the utility model low temperature；
Fig. 2 is the section structure diagram of the adjustable tensile test apparatus of the utility model low temperature；
Fig. 3 is the design of part figure of the adjustable tensile test apparatus of the utility model low temperature；
Fig. 4 is the control principle drawing of the adjustable tensile test apparatus of the utility model low temperature.
In figure: 1 liquid nitrogen container, 3 flow valves, 4 control centres, 5 lower instrument boards, instrument board on 6, is kept the temperature on 72 liquid nitrogen pipelines
Bucket, 8 lower insulation barrels, 9 bolts, 10 nuts, stainless steel casing on 11,12 thermal insulation materials, stainless steel inner casing on 13, temperature passes on 14
Connect under sensor, 15 upper connecting rods, 16 upper grips, 17 liquid nitrogen copper pipes, 18 atomizers, 19 lower collets, 20 lower temperature sensor, 21
Extension bar, 22 lower stainless steel casings, 23 lower stainless steel inner casings.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It describes clear, perfectly.
The adjustable tensile test apparatus of a kind of low temperature provided by the utility model,.
This experimental rig is characterized in that: the device includes temperature holding meanss, temperature control system, liquid nitrogen feedway and
Stretching device, the temperature holding meanss include upper insulation barrel (7) and lower insulation barrel (8), upper insulation barrel (7) by stainless steel outside
Shell (11), thermal insulation material (12), stainless steel inner casing (13) are constituted, and lower insulation barrel (8) is by by upper rust outer steel shell (22), thermal insulation material
(12), stainless steel inner casing (23) is constituted, and upper and lower insulation barrel is coupled by bolt (9) and nut (10)；The temperature controls system
System is made of temperature measurement fraction and control flow part, and temperature control system is by upper temperature sensor (14), lower temperature sensor
(20), upper instrument board (6), lower instrument board (5), control centre (4) and flow valve (3) composition, the folder that temperature sensor will measure
Head temperature feedback obtains digital signal to instrument board and feeds back in control centre (4), to control flow valve (3) supply liquid nitrogen；Institute
The liquid nitrogen feedway stated includes liquid nitrogen container (1), liquid nitrogen pipeline (2), liquid nitrogen copper pipe (17) and atomizer (18) composition；It is described
Stretching device include the upper stretch rod (15) coupled with stretching-machine, lower stretch rod (21) and upper grip (16), lower collet (19)
It constitutes.
Temperature holding meanss are formed by connecting by upper insulation barrel (7) and lower insulation barrel (8) by bolt (9) and nut (10),
Heat preservation wood material is made of stainless steel plate and thermal insulation material, it is possible to provide a closed attemperator.Upper and lower insulation barrel is designed with
Allow the movable port of connecting rod, is vertically connected with bar and is passed into progress tension test in insulation barrel.Lower insulation barrel (8) is equipped with logical
Mouthful, it is connect for liquid nitrogen pipeline (2) with liquid nitrogen copper pipe (17), realizes that liquid nitrogen is injected into insulation barrel.
Liquid nitrogen feedway is by liquid nitrogen container (1), liquid nitrogen pipeline (2), flow valve (3), liquid nitrogen copper pipe (17) and atomizer
(18) it forms, liquid nitrogen enters the liquid nitrogen copper pipe (17) in insulation barrel through flow valve (3), pass through atomization after liquid nitrogen container output
Piece spray head (18) is full of into entire bucket, is cooled down as cooling medium.
Stretching device by upper connecting rod (15), lower connecting rod (21), on stretch collet (16) and lower collet (19) forms, connection
Bar and the collet of Material Testing Machine connect, and upper and lower grips workpiece realizes tension test, up-down stretch collet in insulation barrel
On same axis, and up-down stretch bar must assure that sufficiently large diameter, will not impact to stretch test result.
Temperature control system is made of the part of measurement temperature and the part of flow control, upper temperature sensor (14) with it is upper
Collet (16) connection, lower temperature sensor (20) connect with lower collet (19), and the signal of collection is changed into number by temperature sensor
Word signal, digital signal are fed back on upper instrument board (6) and lower instrument board (5), and signal is finally fed back in control centre.In control
After the signal processing that the heart just obtains, apply instruction in the flow valve (3) of liquid nitrogen pipe road, flow valve controls liquid nitrogen stream according to instruction
Amount, to realize different temperature.
It please refers to shown in Fig. 4, Fig. 4 is the utility model temperature scaling factor schematic diagram.The utility model realizes that temperature is real
When feed back and control process, details are as follows: given temperature parameter is arranged and is input in PLC, corresponding PLC is to temperature parameter
After analysis processing, one electric signal of output to special flow valve controls output liquid nitrogen flow variation.With the changes in flow rate of flow valve,
Heat preservation temperature within the barrel changes therewith, and temperature sensor measures temperature, generates temperature analog signal, is input in A/D converter, A/
Temperature digital signal PLC, PLC after conversion is received digital signal by D converter, is analyzed and processed, with given temperature
Parameter relatively after, then output signals to flow valve, and then control corresponding changes in flow rate, change heat preservation temperature within the barrel, to guarantee
Heat preservation temperature within the barrel is consistent with set temperature, forms closed-loop control system, to realize the Real-time Feedback to temperature and control
System, improves the precision of cryogenic tensile.
Should finally illustrate: the described embodiments are only a part but not all of the embodiments of the present application,
Based on the embodiment in the application, those skilled in the art without making creative work it is obtained it is all its
His embodiment, shall fall in the protection scope of this application.
Claims (6)
1. a kind of adjustable tensile test apparatus of low temperature, characterized in that including temperature holding meanss, temperature control system, liquid nitrogen
Feedway and stretching device, the temperature holding meanss include upper insulation barrel (7) and lower insulation barrel (8), upper insulation barrel (7)
By upper stainless steel casing (11), thermal insulation material (12), upper stainless steel inner casing (13) is constituted, lower insulation barrel (8) by lower stainless steel outside
Shell (22), thermal insulation material (12), lower stainless steel inner casing (23) are constituted, and upper and lower insulation barrel is connected by bolt (9) and nut (10)；
The temperature control system is by upper temperature sensor (14), lower temperature sensor (20), upper instrument board (6), lower instrument board
(5), the collet temperature feedback measured is obtained number to instrument board by control centre (4) and flow valve (3) composition, temperature sensor
Signal is simultaneously fed back in control centre (4), to control flow valve (3) supply liquid nitrogen；The liquid nitrogen feedway includes liquid nitrogen container
(1), liquid nitrogen pipeline (2), liquid nitrogen copper pipe (17) and atomizer (18)；The stretching device include couple with stretching-machine it is upper
Connecting rod (15), lower connecting rod (21), upper grip (16) and lower collet (19).
2. the adjustable tensile test apparatus of a kind of low temperature according to claim 1, it is characterized in that: insulation barrel is by upper insulation barrel
(7) composition is connected with nut (10) upper-lower seal by bolt (9) with lower insulation barrel (8).
3. the adjustable tensile test apparatus of a kind of low temperature according to claim 1, it is characterized in that: between liquid nitrogen pipeline (2)
Equipped with flow valve (3), liquid nitrogen flow can be controlled by control system.
4. the adjustable tensile test apparatus of a kind of low temperature according to claim 1, it is characterized in that: there are four being set in insulation barrel
Symmetrically placed liquid nitrogen copper pipe (17), there are three atomizer (18) on each copper pipe.
5. the adjustable tensile test apparatus of a kind of low temperature according to claim 1, it is characterized in that: being set on lower insulation barrel (8)
There is conduit path, liquid nitrogen is inputted in insulation barrel by pipeline and docked with four liquid nitrogen copper pipes (17).
6. the adjustable tensile test apparatus of a kind of low temperature according to claim 1, it is characterized in that: upper insulation barrel (7) is equipped with
The position of temperature sensor (14) in placement, lower insulation barrel (8) are equipped with the position for placing temperature sensor (20), can be by temperature
Signal is changed into digital signal and feeds back to control centre (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678969.4U CN208937406U (en) | 2018-10-17 | 2018-10-17 | A kind of adjustable tensile test apparatus of low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678969.4U CN208937406U (en) | 2018-10-17 | 2018-10-17 | A kind of adjustable tensile test apparatus of low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208937406U true CN208937406U (en) | 2019-06-04 |
Family
ID=66724727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821678969.4U Expired - Fee Related CN208937406U (en) | 2018-10-17 | 2018-10-17 | A kind of adjustable tensile test apparatus of low temperature |
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| CN (1) | CN208937406U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967258A (en) * | 2019-11-18 | 2020-04-07 | 探普(南京)工业科技有限公司 | Liquid nitrogen-free high-low temperature tensile test device |
-
2018
- 2018-10-17 CN CN201821678969.4U patent/CN208937406U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967258A (en) * | 2019-11-18 | 2020-04-07 | 探普(南京)工业科技有限公司 | Liquid nitrogen-free high-low temperature tensile test device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 Termination date: 20201017 |