CN2490570Y - Horizontal dynamic thermogravimeter - Google Patents
Horizontal dynamic thermogravimeter Download PDFInfo
- Publication number
- CN2490570Y CN2490570Y CN 01219748 CN01219748U CN2490570Y CN 2490570 Y CN2490570 Y CN 2490570Y CN 01219748 CN01219748 CN 01219748 CN 01219748 U CN01219748 U CN 01219748U CN 2490570 Y CN2490570 Y CN 2490570Y
- Authority
- CN
- China
- Prior art keywords
- test
- utility
- model
- balance
- betal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model provides a horizontal dynamic thermogravimeter, wherein a balance beam is fixed on a moving coil of a magnetic crock; the magnetic crock, a lining plate and a metal shell gland are fixed on the metal shell and connected with a slip back and can slip on the tracks. A temperature thermocouple in the tester is connected with a programmed control instrument and a computer; test results are collected, calculated, mapped out and stored by the computer and the test procedures and results are printed by a printer; an important characteristic of the horizontal thermogravimeter analysis is that the horizontal thermogravimeter analysis is free from the interference of the buoyancy and can be used to carry out test at a relatively fast air speed; the utility model can quickly measure the variable information of materials in the process of burning while carrying out simulated high temperature burning test, thereby the utility model is one of the best means; in addition, if the utility model is provided with protection gases, the utility model can let in a plurality of atmospheres such as corrosive atmosphere and flammable atmosphere and so on to carry out the dynamic in situ test; moreover the utility model can also carry out the vacuum absorption/adsorption test and so on; the utility model has the advantages of small volume, light weight, convenient operation and easy mastery.
Description
The utility model relates to a kind of thermogravimetric analysis instrument, particularly a kind of horizontal dynamic thermogravimetric analysis instrument.
At present, horizontal dynamic thermogravimetric analysis instrument is under program temperature (constant heatingrate, constant temperature, cooling) control, measures the temperature variant horizontal shift formula of quality (or weight) the thermogravimetric analysis device of material.In order to measure the decomposition of material under temperature and atmosphere ambient condition, thermogravimetric (TG) curve of quantitative change (Δ W) that the research of distillation, chemical combination, polymerization, reduction, oxidation, absorption, desorption and Chemical Kinetics or physics thermal effect process cause and temperature (T) relation.Because the specimen frame is exactly an end of balance beam, when sample heated in stove, balance beam extended expanded by heating, the elongation of balance beam arm, and weighing must produce error.Its balance girder system of this product from external introduction adopts the quartzy material of expansion coefficient minimum to make for a long time, owing to often be subjected to that the quartz fibre of high temperature barbecue can go bad, wears out, becomes fragile, easily broken and very difficult reparation, and even newspaper decreases, and can only test routinely, all can not lead to corrosivity and inflammable, explosion hazard gas.Can not simulate high temperature and feed intake, determine the TG curve of instantaneous variation amount, and dynamic in-situ test etc.
The purpose of this utility model is exactly for solving existing problem in the above-mentioned thermogravimetric analysis instrument, a kind of structure of improving balance beam is provided, make it to reach neither because be subjected to thermal break-off, balance beam being damaged.Even if the gravity beam-ends fractures, also can change at any time.Make balance often be in normal serviceable condition.Change the web member of balance container and quartzy tester, retrofit testing device structure makes the body of ventilating directly enter tester without the electric balance container, contacts with sample.Gu carry out gas---reaction, protection gas can directly enter the balance container, then enters test reactor, can reach a protection day flat component and not be corroded or pollute.Can use various gas to test, and can increase test function.Improvement system air tight structure makes it to reach the purpose of vacuum test.Increase temperature-control heat couple at heating furnace, heat separately, to design temperature, fixed weigher, mobile high temperature furnace is inserted in tester, can carry out the moment testing experiment, or the experiment of simulation high temperature incineration, and can test fast.
The utility model is that balance beam 24 is fixed on the moving-coil 23 of magnetic cylinder 21, magnetic cylinder 21 is fixed on the liner plate 27, liner plate 27 is fixed on the electric balance betal can 19 again, betal can gland 17 sticks gland O type circle 18 and is fixed on the electric balance betal can 19, be connected with sliding bottom 36, and can on track 37, slide, constitute the main body of electric balance.Change quartzy balance beam 24 into hard aluminium alloy, can alleviate the pressure of pull spring 33.Left end at beam; add a locknut 14; connect a replaceable quartz specimen frame 9 that has little hook,, open a little slit at balance container gas vent 13 places; increase the exit velocity of indifferent gas; avoid gas to flow backwards and keep the balance container to be in room temperature state, except that feeding the inert gas cooling, also increased cooling water pipe 20 at betal can gland 17 near the fire door place; make integral body be in room temperature state, be not acted upon by temperature changes with the protection balance beam.Stretched into a bit of quartz fibre in the stove, because of its volume is very little, the expanded by heating elongation almost approaches zero.Be the enlargement gas range of application, the utility model has designed the movable gland 12 of one pair of metal, the internal diameter of the movable gland 12 of metal is a bit larger tham the external diameter of quartz flange tester 10 blind flanges, increase a tetrafluoro software bushing 15 of cutting in advance in the gland, therefore just air intake opening pipe valve 11 can be set near the flange of quartzy tester 10, except that inert gas from air intake opening pipe valve 11 can enter the balance container, every gas that enters tester all can be thus mouthful enters, therefore on material is selected, every have the place that contacts with corrosive gas, all adopt anti-corrosion material, sample indigo plant also selects for use quartz or other anti-corrosion materials to make, but the range of application of enlargement gas.Simulation high temperature moment test must be the back charging that heats up earlier, vent valve 1, connect that ground 2, stove are stifled 4, fan-shaped fire door 6, the warm galvanic couple 8 of observing and controlling and program control instrument 41 follow the tracks of with computing machine 39 and gather computings, draw the change information of moment.Of the present utility model day flat structure carries out the inertia protection gas that inert gas replacement (finding time to replace or purge) keeps constant basis afterwards continuously before only needing to survey, can carry out the dynamic in-situ test of all gases, as Fig. 1, Fig. 2, shown in Figure 3.
Stick right O type circle 25 at electric balance betal can 19 and put glass flange sealer 26 and tetrafluoro packing ring 31, tighten with metal backup shoe 32.Quartz specimen frame 9 is inserted fastening nut 14 in the balance beam pore, protection gas delivery channel 13 is set again puts the crown cap that has crack then.The flange that will have the tester 10 of a pipe flange puts the movable gland 12 of metal and sticks O type circle 16 with the tetrafluoro bushing 15 of cutting at betal can gland 17, tightens betal can gland 17 with the movable gland 12 of metal.Temperature-control heat couple 3 is set in the heating furnace 5 is used for the quick TG curve that the instantaneous burning material of simulation test high temperature furnace changes.Balance beam 24 usefulness hard aluminium alloys are made, and are connected to become a ridge body with moving-coil 23 in the magnetic cylinder 21, and weldering is tightened extremely with pull spring 33 in the two ends of moving-coil 23, and balance beam 24 is suspended between magnet and the iron core, to support the load of whole balance, also is the central pivot point of balance beam 24.The right-hand member of balance beam 24 is provided with counterweight basket 28, in order to the increase and decrease balanced load, makes it to reach mechanical equilibrium.The right-hand member of balance beam arm has a rectangular aluminium flag, puts in the photoelectric commutator 30 as light hurdle 29, and photoelectric commutator 30 is to produce directional light by pointolite, and light hurdle 29 is arranged on the right-hand member of balance beam 24, and differential photoelectric cell 35 is arranged on the place ahead on light hurdle 29.With the locknut 14 of band sieve button quartz specimen frame 9 is fixed on the left arm of balance beam 24, testing sample indigo plant 7 hangs over the end of quartz specimen frame 9, and sample basket 7 places the middle part of tester 10, i.e. the place, flat-temperature zone of heating furnace 5.Heating furnace 5 is provided with fan-shaped fire door 6 and stove stifled 4 and helps opening and cooling, and cooperates synchronously with check weighing amplifier 40 and to carry out, as Fig. 1, Fig. 2, shown in Figure 3.
The sample that weighs up is hung on the sample indigo plant 7; counterweight basket 28 at right beam-ends adds the equivalent counterpoise; make it balance; put the glass flange sealer 26 of quartzy tester 10 and right-hand member,, feed the inert gas replacement system air from protection gas import pipe valve 22 with 40 zeroings of check weighing amplifier; perhaps vacuumize displacement; and keep 30～50ml/ to divide constant blanket gas, and just can feed required various constant current gases, test can heat up.When sample is subjected to temperature action, its quality is under specific temperature conditions, to produce weightless or the weightening finish variation, the gravity end of balance beam 24 will produce or under displacement, balance is damaged, the other end of balance beam 24 then produces opposite displacement, and the moving-coil 23 of balance beam 24 connections simultaneously also produces deflection synchronously.The also synchronous backward displacement of light hurdle 29 of balance beam 24 right-hand members, the former differential photoelectric cell 35 that is in balance produces differential photocurrent owing to the change of illumination output, computing, amplification, sampling, decay through check weighing amplifier 40, its potential difference (PD) is converted to weight change information, and add to moving-coil 23 with corresponding negative feedback and make it to produce reverse electromagnetic torque, order about moving-coil 23 and reset, promptly balance returns zero.Along with the size of quantitative change, produce the displacement of geometric ratio in whole test process, its displacement and quantitative change are linear.Positive and negative value generally with increment for just, decrement is for negative.Its quantitative change and program temperature are respective value, so thermogravimetric curve is referred to as the TG curve, the thermogravimetric differential curve then is called the DTG curve.When treating that furnace temperature is raised to design temperature, quick translation heating furnace 5, when being advanced to tester 10 front end cone-shaped bodys, bump out fan-shaped fire door 6 automatically, when tester 10 all enters heating furnace 5, the reducing bulge of tester 10 is just sealed fire door automatically, the other end of heating furnace 10 is provided with stove and blocks up 4, plays the effect of banking and reducing.The outlet pipe end of tester 10 is provided with and connects ground 2, vent valve 1 be connected ground 2 and be connected, controlledly be made as it and discharge and closed system vacuumizes.The warm galvanic couple 8 of observing and controlling in the tester 10 is connected with computing machine 39 with program control instrument 41, and test result is by computing machine 39 collections, computing, drawing, storage, and printer 38 prints test process and test result, as Fig. 1, Fig. 2, shown in Figure 3.
The utility model is a horizontal dynamic thermogravimetric analysis instrument.Horizontal dynamic thermogravimetric analysis instrument and upper utensil type or down ware formula thermogravimetric instrument compare, its great advantage is 1) balance highly sensitive.2) sample is not subjected to the influence of buoyancy or thermal current in heating process, therefore can feed gas medium than air flow at test process, for the simulation production technology, and the trial-production new product, rapid screening, evaluation provide good research means.
Improved the structure and the material thereof of balance beam and selected, made it to reach neither, balance beam is damaged because be subjected to thermal break-off.Even if fracture, also can change at any time, still make balance be in normal user mode.Change the web member and the tester structure of balance container and quartzy tester, make the body of ventilating directly enter tester and contact with sample without the electric balance container.Gu carry out gas---reaction, blanket gas can directly enter the balance container, enters test reactor again, can reach the protection balance and not corroded or pollute.Can enlarge the test specification of using various gas with various, increase test function.Improvement system air tight structure makes it to reach the purpose of vacuum test.Increase temperature-control heat couple at heating furnace, heat separately, to design temperature, fixed weigher, mobile high temperature furnace is inserted in tester, can carry out the moment testing experiment, or the experiment of simulation high temperature incineration.Test fast.Accuracy of instrument of the present utility model can both reach or very near external state-of-the-art technical merit, and can feed the test function of all gases (comprise burn into inflammable, explosive, poisonous etc.), and dynamic in-situ test function, has widened range of application.
The structural representation of Fig. 1 horizontal dynamic thermogravimetric analysis instrument
The structural representation of Fig. 2 horizontal dynamic thermogravimetric analysis instrument
The structural representation of Fig. 3 horizontal dynamic thermogravimetric analysis instrument
1 vent valve, 2 connect ground, 3 temperature-control heat couple, 4 stoves are stifled; 5 heating furnaces, 6 fan type fire doors, 7 sample indigo plants, the warm galvanic couple of 8 observing and controlling; 9 quartz specimen framves, 10 testers, 11 air intake opening pipe valves, the movable gland of 12 metals; 13 protection gas exit slits, 14 locknuts, 15 tetrafluoro bushings, 16; O type circle; 17 betal can glands, 18 gland O type circles, 19 electric balance betal cans, 20 cooling water pipes; 21 magnetic cylinders, 22 protection gas import pipe valves, 23 moving-coils; 24 balance beams, 25 right O type circles, 26 glass flange sealers; 27 liner plates, 28 counterweight baskets, 29 smooth hurdles; 30 photoelectric commutators, 31 tetrafluoro packing rings, 32 metal backup shoes; 33 pull springs, 34 sources of parallel light, 35 differential photoelectric cells; 36 sliding bottoms, 37 guide rails, 38 printers; 39 computing machines, 40 check weighing amplifiers, 41 program control instruments
Below be described with reference to the accompanying drawings with embodiment.
Embodiment 1
Stick right O type circle 25 at electric balance betal can 19 and put glass flange sealer 26 and tetrafluoro packing ring 31, tighten with metal backup shoe 32.Quartz specimen frame 9 is inserted fastening nut 14 in the balance beam pore, protection gas delivery channel 13 is set again puts the crown cap that has crack then.The flange that will have the tester 10 of a pipe flange puts the movable gland 12 of metal and sticks O type circle 16 with the tetrafluoro bushing 15 of cutting at betal can gland 17, tightens betal can gland 17 with the movable gland 12 of metal.Temperature-control heat couple 3 is set in the heating furnace 5 is used for the quick TG curve that the instantaneous burning material of simulation test high temperature furnace changes.Balance beam 24 usefulness hard aluminium alloys are made, and are connected to become a ridge body with moving-coil 23 in the magnetic cylinder 21, and weldering is tightened extremely with pull spring 33 in the two ends of moving-coil 23, and balance beam 24 is suspended between magnet and the iron core, to support the load of whole balance, also is the central pivot point of balance beam 24.The right-hand member of balance beam 24 is provided with counterweight basket 28, in order to the increase and decrease balanced load, makes it to reach mechanical equilibrium.The right-hand member of balance beam arm has a rectangular aluminium flag, puts in the photoelectric commutator 30 as light hurdle 29, and photoelectric commutator 30 is to produce directional light by pointolite, and light hurdle 29 is arranged on the right-hand member of balance beam 24, and differential photoelectric cell 35 is arranged on the place ahead on light hurdle 29.。With the locknut 14 of band sieve button quartz specimen frame 9 is fixed on the left arm of balance beam 24, testing sample indigo plant 7 hangs over the end of quartz specimen frame 9, and sample basket 7 places the middle part of tester 10, i.e. the place, flat-temperature zone of heating furnace 5.Fan-shaped fire door 6 is set heating furnace 5 and stove stifled 4 helps opening and cooling.The outlet pipe end of tester 10 is provided with and connects ground 2, vent valve 1 be connected ground 2 and be connected, controlledly be made as it and discharge and closed system vacuumizes, as Fig. 1, Fig. 2, shown in Figure 3.
The sample that weighs up is hung on the sample indigo plant 7; counterweight basket 28 at right beam-ends adds the equivalent counterpoise; make it balance; put the glass flange sealer 26 of quartzy tester 10 and right-hand member,, feed the inert gas replacement system air from protection gas import pipe valve 22 with 40 zeroings of check weighing amplifier; perhaps vacuumize displacement; and keep 30～50ml/ to divide constant blanket gas, and just can feed required various constant current gases, test can heat up.When sample is subjected to temperature action, its quality is under specific temperature conditions, to produce weightless or the weightening finish variation, the gravity end of balance beam 24 will produce or under displacement, balance is damaged, the other end of balance beam 24 then produces opposite displacement, and the moving-coil 23 of balance beam 24 connections simultaneously also produces deflection synchronously.The also synchronous backward displacement of light hurdle 29 of balance beam 24 right-hand members, the former differential photoelectric cell 35 that is in balance produces differential photocurrent owing to the change of illumination output, computing, amplification, sampling, decay through check weighing amplifier 40, its potential difference (PD) is converted to weight change information, and add to moving-coil 23 with corresponding negative feedback and make it to produce reverse electromagnetic torque, order about moving-coil 23 and reset, promptly balance returns zero.Along with the size of quantitative change, produce the displacement of geometric ratio in whole test process, its displacement and quantitative change are linear.Positive and negative value generally with increment for just, decrement is for negative.Its quantitative change and program temperature are respective value, so thermogravimetric curve is referred to as the TG curve, the thermogravimetric differential curve then is called the DTG curve.When treating that furnace temperature is raised to design temperature, quick translation heating furnace 5, when being advanced to tester 10 front end cone-shaped bodys, bump out fan-shaped fire door 6 automatically, when tester 10 all enters heating furnace 5, the reducing bulge of tester 10 is just sealed fire door automatically, the other end of heating furnace 10 is provided with stove and blocks up 4, plays the effect of banking and reducing.The warm galvanic couple 8 of observing and controlling in the tester 10 is connected with computing machine 39 with program control instrument 41, and test result is by computing machine 39 collections, computing, drawing, storage, and printer 38 prints test process and test result, as Fig. 1, Fig. 2, shown in Figure 3.
Claims (1)
1, a kind of horizontal dynamic thermogravimetric analysis instrument, it is characterized in that balance beam (24) is fixed on the moving-coil (23) of magnetic cylinder (21), the magnetic cylinder is fixed on again on the liner plate (27), liner plate (27) is fixed on the electric balance betal can (19) again, betal can gland (17) is fixed on the electric balance betal can (19), and is connected with base; Stick right O type circle (25) at electric balance betal can (19) and put flanged (FLGD) glass flange sealer (26) and tetrafluoro packing ring (31), tighten with metal backup shoe (32); The quartz specimen frame is inserted with fastening nut in balance beam (24) pipe that gong buckles, protection gas delivery channel (13) is set again puts the crown cap that has crack then; The tester 10 and the tetrafluoro bushing 15 that will have a pipe flange are tightened with the movable glands of betal can gland 17 usefulness metals (12); Temperature-control heat couple (3) is set in the heating furnace (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219748 CN2490570Y (en) | 2001-04-20 | 2001-04-20 | Horizontal dynamic thermogravimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219748 CN2490570Y (en) | 2001-04-20 | 2001-04-20 | Horizontal dynamic thermogravimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490570Y true CN2490570Y (en) | 2002-05-08 |
Family
ID=33637498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01219748 Expired - Fee Related CN2490570Y (en) | 2001-04-20 | 2001-04-20 | Horizontal dynamic thermogravimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490570Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092803A (en) * | 2016-05-30 | 2016-11-09 | 华北电力大学（保定） | Constant temperature Thermgravimetric Analysis Apparatus |
| CN109521048A (en) * | 2018-10-15 | 2019-03-26 | 大连理工大学 | The experimental system and method for real time temperature measurement check weighing when a kind of pyrolysis of coal for column |
| CN110736767A (en) * | 2019-09-19 | 2020-01-31 | 江苏大学 | System and method for measuring oxidation characteristic parameters of liquid mixed fuel oil |
| US10852221B2 (en) * | 2018-04-11 | 2020-12-01 | Huazhong University Of Science And Technology | Magnetic suspension thermobalance based on quick photothermal heating and measurement method thereof |
-
2001
- 2001-04-20 CN CN 01219748 patent/CN2490570Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092803A (en) * | 2016-05-30 | 2016-11-09 | 华北电力大学（保定） | Constant temperature Thermgravimetric Analysis Apparatus |
| US10852221B2 (en) * | 2018-04-11 | 2020-12-01 | Huazhong University Of Science And Technology | Magnetic suspension thermobalance based on quick photothermal heating and measurement method thereof |
| CN109521048A (en) * | 2018-10-15 | 2019-03-26 | 大连理工大学 | The experimental system and method for real time temperature measurement check weighing when a kind of pyrolysis of coal for column |
| CN110736767A (en) * | 2019-09-19 | 2020-01-31 | 江苏大学 | System and method for measuring oxidation characteristic parameters of liquid mixed fuel oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101339138B (en) | Explosive stability nitrous oxides concentration detection device | |
| CN108007809B (en) | Rapid heating wide-range thermogravimetric analyzer | |
| CN111638316B (en) | Device and method for simulating coke reaction at high-temperature section of blast furnace | |
| CN107966398A (en) | A kind of experimental rig for simulating high temperature corrosion | |
| CN201666861U (en) | Device for testing weight loss on heating of solid object | |
| CN206235585U (en) | A kind of coal sample heating and oxidation test device | |
| WO2018149208A1 (en) | Thermogravimetric analyser with rapid temperature rise | |
| CN2490570Y (en) | Horizontal dynamic thermogravimeter | |
| CN208818642U (en) | A kind of experimental system for testing coal spontaneous ignition overall process | |
| CN100347733C (en) | Analog fire smoke releasing device | |
| CN207516197U (en) | One kind is rapidly heated wide-range thermogravimetric analyzer | |
| Leonard et al. | Development of a controlled‐atmosphere cone calorimeter | |
| CN2474975Y (en) | Multifunction high temperature experimental furnace | |
| CN103712877A (en) | Thermogravimetric characteristic analysis system for massive test specimen supercritical water gasification | |
| CN107561315B (en) | The test device and method of microcosmic olefin hydrogen and hydrogen segregation activation energy in a kind of metal | |
| CN110531026B (en) | Method for measuring suspension state reaction kinetics of powder material | |
| RU134650U1 (en) | COMPLEX FOR RESEARCH OF PROCESSES OF THERMAL DECOMPOSITION OF NON-METAL MATERIAL | |
| CN203705288U (en) | Thermo-gravimetric characteristic analyzing system used for supercritical water gasification of great-inventory test sample | |
| Ilavský et al. | Experimental observation of temperature gradients occurring in a single zeolite pellet | |
| CN109324081A (en) | The measuring method of nitrogen in a kind of heating agent of carbon system | |
| CN2844896Y (en) | High temperature weight analyzer for large sample of refractory material | |
| CN103018126A (en) | Liquid seal connecting device for thermogravimetric analyzer | |
| CN209015544U (en) | A kind of lower ship top opening cabin fire test simulator of ambient wind effect | |
| CN203037545U (en) | Liquid seal connection device for thermogravimetric analyzer | |
| CN207300784U (en) | A kind of lower vertical thermobalance of ware formula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |