CN204374021U - A kind of controllable temperature vacuum desorption Performance Test System - Google Patents
A kind of controllable temperature vacuum desorption Performance Test System Download PDFInfo
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- CN204374021U CN204374021U CN201520033714.2U CN201520033714U CN204374021U CN 204374021 U CN204374021 U CN 204374021U CN 201520033714 U CN201520033714 U CN 201520033714U CN 204374021 U CN204374021 U CN 204374021U
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Abstract
A kind of controllable temperature vacuum desorption Performance Test System, belongs to absorption refrigeration field.This system comprises the vacuum pump, drying tower, the drying box that connect successively with rubber tube.Have drying agent in drying tower, drying box has refractory metal shell, vacuum meter, degassing button, temperature control panel, vacuum valve switch, power switch, cabinet space, switch gate with the high temperature resistant combining glass of bilayer.The quartzy balance weighing apparatus being applicable to vacuum environment is placed with, in order to the mass change of continuous coverage adsorbent in desorption process in drying box.This balance comprises base, support column, the arm beam of steelyard, left hook, right hook, rear side cantilever, front side cantilever pointer, cantilever balancing stand, index dial.Left and right hook hangs respectively and the sieve of adsorbent and corresponding counterweight is housed.This system to the temperature of desorption environment, pressure achieve effective control, thus can carry out dynamic monitoring to adsorbent desorption process under vacuum sealing environment, and system architecture is simple, and easy to operate, measuring accuracy is higher.
Description
Technical field
The utility model relates to a kind of adsorbent desorption performance test macro, and its technical characteristics is can sorbing material dynamic desorption characteristics at a given temperature under continuous coverage vacuum environment.This utility model belongs to adsorption refrigeration technique field.
Background technology
Along with improving constantly of human living standard, people require more and more higher to environmental amenity degree, and air-conditioning becomes a kind of household electrical appliance of indispensability gradually.But traditional refrigeration air-conditioner, due to the use of freon class cold-producing medium and the consumption to electric energy, becomes the key factor causing current environment and energy problem.Therefore, develop lossless to ozonosphere, without greenhouse effect, and low-grade energy can be utilized as the energy saving and environment friendly refrigeration air-conditioner of power, be the important topic of field of Refrigeration and Air-conditioning research.Adsorptive refrigeration technology is owing to can utilize the low-grade heat source such as sun power, industrial exhaust heat as driving force, and can environment for use friendly cold-producing medium to avoid the destruction to physical environment, therefore, as a kind of green refrigeration technology, absorption type refrigerating is considered to have good application prospect.
In adsorption refrigeration system, working medium on adsorption/desorption characteristic quite large on impacts such as the coefficient of refrigerating performance of system, equipment size and application scenarios, fundamentally decide performance and the structure of system.Therefore, a kind of research of adsorption-desorption performance testing device to adsorptive refrigeration technology simple to operate, that measuring accuracy is higher is created extremely important.In actual absorbing refrigeration system, the desorption process of most adsorbent occurs in vacuum environment, and also there is no a kind of device being used for testing adsorbent desorption performance specially at present on the market, therefore, a kind of adsorbent desorption performance test macro can simulating actual environment is developed significant.
Utility model content
For the blank of prior art, the utility model is intended to propose a kind of controllable temperature vacuum desorption Performance Test System, this system can test the desorption characteristics of adsorbent under the different vacuum tightness of different temperatures, solve a difficult problem for continuous coverage mass change in vacuum environment, this system architecture is simple, easy to operate, precision is higher.
The utility model takes vacuum drying chamber and quartzy balance to weigh combined technical scheme.Wherein be made up of vacuum pump 1, drying tower 3, drying box 5 in controllable temperature vacuum test system.In drying tower, place drying agent 4, when utilizing vacuum pump to vacuumize drying box, the drying agent in drying tower can water vapor in absorption dehydration case, prevents it from producing vacuum pump and destroy.Drying box has refractory metal shell, vacuum meter 6 and degassing button 7 are equipped with in frontal left top, and left side central portion has temperature control panel 8, and left lower has vacuum valve switch 9 and power switch 10, right side is cabinet space, and right front is the switch gate 11 with the high temperature resistant combining glass of bilayer.The homemade quartz balance weighing apparatus 12 that one is applicable to vacuum environment is placed in drying box.Because adsorbent has the character of desorption under absorption, high temperature under low temperature, therefore to realize the accurate measurement of mass change in desorption process, resistant to elevated temperatures Weighing apparatus must be used.Common electronic scale has the precision element such as sensor and amplifying circuit due to inside, measures under cannot realizing high temperature, and mechanical tray balance check weighing process needs artificial swing weight-adding, also cannot use in this vacuum enclosure of drying box.Utilize the resistant to elevated temperatures feature of quartz glass, this quartzy balance weighing apparatus can meet measuring condition under 600 DEG C of high temperature, and can observe the change of balance weighing apparatus reading by the combining glass of drying box, without the need to artificial swing weight-adding, realizes consecutive weighings under vacuum conditions.
This quartzy balance weighing apparatus comprises base 14, support column 15, the arm beam of steelyard 16, rear side cantilever 17, front side cantilever pointer 18, cantilever balancing stand 19, index dial 24.Arm beam of steelyard two ends have two to link up with 2021, left end hangs the sieve 22 that the saturated adsorbent of absorption is housed, the sieve aperture of screen bottom is conducive to adsorbent and realizes two-sided mass transfer, right-hand member hook hangs the counterweight 23 with left end equal in quality, and during balance, on front side of balance, cantilever pointer is at 0 scale place, along with desorption carries out, left side Mass lost, cantilever pointer run-off the straight on front side of balance weighing apparatus, desorption mass is corresponding with pointer indication scale.
The measuring accuracy of this balance weighing apparatus is 0.125g, and range is 8g, sieve quality 11g, test about adsorbent mass 19g.
In addition, for ensureing can to read balance weighing apparatus registration exactly across drying box double-layer glass door, a stainless steel circular base plate 13 is inverted in quartzy balance weighing apparatus base lower end.
This measuring system course of work is as follows: the temperature first being set drying box by the temperature control panel 8 of drying box, in case to be dried, electrical heating wire is by after drying box space heating to design temperature, opening chamber door is placed on the left and right hook of quartzy balance weighing apparatus fast respectively by the counterweight 23 of sieve 22 and equal in quality that adsorbent is housed, close chamber door, open the vacuum valve switch 9 of drying box, work space in vacuum pump 1 pair of drying box is utilized to vacuumize, treat that vacuum tightness reaches setting value, close vacuum valve switch 9 and vacuum pump 1.Record quartzy balance weighing apparatus registration, drying box vacuum tightness and temperature at regular intervals.
In general, main characteristics of the present utility model is: can to the temperature of desorption environment, vacuum tightness achieve effective control; Realize under high-temperature vacuum enclosed environment the Measurement accuracy of mass change in adsorbent desorption process.This system architecture is simple, and easy to operate, measuring accuracy is higher.
Accompanying drawing explanation
Fig. 1 controllable temperature vacuum desorption Performance Test System schematic diagram;
Fig. 2 homemade quartz balance weighing apparatus schematic diagram;
Fig. 3 holds the empty sieve schematic diagram of stainless steel of test sample;
Fig. 4 is setting under operating mode, the change with time of temperature, vacuum tightness, desorption number percent;
Fig. 5 vacuum tightness is 0.09mPa, under different temperatures ZSM-5 zeolite molecular sieve by time desorption curve;
Fig. 6 temperature is 60 DEG C, under different vacuum tightness ZSM-5 zeolite molecular sieve by time desorption curve;
The desorption curve contrast of Fig. 7 different materials;
1. vacuum pumps, 2. iron stand, 3. drying tower in figure, 4. drying agent, 5. drying box, 6. vacuum meter, 7. air release, 8. temperature control panel, 9. vacuum valve, 10. drying box power switch, the switch gate of 11. band double panes, 12. quartzy balance weighing apparatus, 13. stainless steel seat cushions, 14. balance bases, 15. support columns, 16. arm beams of steelyard, cantilever on rear side of in the of 17., cantilever pointer on front side of in the of 18., 19. cantilever balancing stands, 20. left hooks, 21. right hooks, 22. sample sieves, 23. counterweights, 24. index dials, 25. sieve bottom surfaces, 26. screen side walls, 27. sieve hooks.
Embodiment
In order to better understand meaning of the present utility model, below in conjunction with drawings and Examples, application of the present utility model is further described.The application of device has more than and is limited to specific embodiment described herein.In addition, below technical characteristic involved in described each embodiment, just can mutually combine as long as do not conflict each other.
In the utility model specific embodiment 1, design temperature is 60 DEG C, and setting vacuum tightness is 0.09mPa, and test material is ZSM-5 zeolite molecular sieve.Test purpose is to investigate temperature, vacuum tightness, desorption number percent process over time in desorption process, sees Fig. 4.
In specific embodiment 2, setting vacuum tightness is 0.09mPa, and design temperature is respectively 30 DEG C, 60 DEG C, 90 DEG C, 120 DEG C, 150 DEG C, and test material is ZSM-5 zeolite molecular sieve, is intended to investigate temperature to the impact of adsorbent desorption effect, and test result is shown in Fig. 5.
In specific embodiment 3, design temperature is 60 DEG C, and setting vacuum tightness is respectively 0.06mPa, 0.07mPa, 0.08mPa, 0.09mPa, and test material is ZSM-5 zeolite molecular sieve, and be intended to investigate vacuum tightness to the impact of desorption effect, test result is shown in Fig. 6.
In the utility model specific embodiment 4, design temperature is 60 DEG C, setting vacuum tightness is 0.09mPa, test material is respectively ZSM-5 zeolite molecular sieve, discolour silica gel, 5A zeolite molecular sieve, SAPO-34 zeolite molecular sieve, under being intended to investigate same environment, adsorbent species is on the impact of desorption effect, and its comparison diagram is shown in Fig. 7.
Embodiment 1
By the temperature control panel (8) of drying box, the temperature of drying box (5) is set as 60 DEG C, then connects well heater.After the temperature inside the box to be dried is elevated to 60 DEG C from room temperature, open the sieve (22) that ZSM-5 zeolite is housed that gross weight is 30g by chamber door fast and 30g counterweight (23) is placed on the left and right hook of quartzy balance weighing apparatus (12) respectively, close chamber door.Open vacuum valve (9) switch of drying box, utilize vacuum pump (1) to vacuumize work space in drying box.When vacuum tightness reaches 0.09mPa, close vacuum valve (9) and vacuum pump (1).At interval of certain hour record quartz balance weighing apparatus registration, drying box vacuum tightness and temperature.Because experiment starting stage desorption rate is very fast, therefore the reading time interval time is set to 3 minutes.Along with experiment carrying out, desorption rate slows down, interval time proper extension.Fig. 4 is under above-mentioned setting operating mode, temperature, vacuum tightness, desorption number percent relation over time.As can be seen from the figure, at the experiment initial stage, temperature can through certain fluctuation, and this is mainly because experiment opens drying box door (11) when starting, and puts into caused by interference that sorbing material and counterweight cause.Along with the carrying out of experiment, dry the temperature inside the box will tend towards stability gradually.Along with water vapor from ZSM-5 zeolite molecular sieve gradually desorption out, in case, vacuum tightness can slightly reduce, but reduce amplitude very little, still can meet requirement of experiment.
Embodiment 2
Adopt the experimental technique of similar example 1, setting vacuum tightness is 0.09mpa, but temperature is set as 30 DEG C, 60 DEG C, 90 DEG C, 120 DEG C, 150 DEG C successively.Test material is ZSM-5 zeolite molecular sieve, and test result is shown in Fig. 5, and as can be seen from Figure 5, the desorption process of temperature to ZSM-5 zeolite molecular sieve has material impact, and along with temperature raises, desorption rate accelerates, and balance desorption number percent increases.
Embodiment 3
Adopt the experimental technique of similar example 1, design temperature be 60 DEG C constant, successively set vacuum tightness be 0.06mPa, 0.07mPa, 0.08mPa, 0.09mPa.Investigate pressure to the impact of desorption rate.Test material is ZSM-5 zeolite molecular sieve, and test result is shown in Fig. 6, and as can be seen from Figure 6, the desorption process of vacuum tightness to ZSM-5 zeolite molecular sieve also has certain influence, and vacuum tightness is larger on the whole, and desorption effect is better.But for the effect of temperature, the impact of vacuum tightness on desorption rate is less.
Embodiment 4
Adopt the experimental technique of similar example 1, design temperature is 60 DEG C, and setting vacuum tightness is 0.09mPa, and test material is respectively ZSM-5 zeolite molecular sieve, discolour silica gel, 5A zeolite molecular sieve and SAPO-34 zeolite molecular sieve, and test result is shown in Fig. 7.As can be seen from Figure 7, different materials has different desorption abilities under the same conditions, and the regularity of change is obvious.This also shows the reliability of proving installation of the present utility model from another angle.
Claims (3)
1. a controllable temperature vacuum desorption Performance Test System, is characterized in that: this system comprises the vacuum pump (1), drying tower (3), the drying box (5) that connect successively with hard proofed sleeve; Have drying agent (4) in drying tower, drying box has refractory metal shell, vacuum meter (6), degassing button (7), temperature control panel (8), vacuum valve switch (9), power switch (10), cabinet space, switch gate (11) with the high temperature resistant combining glass of bilayer; The quartzy balance weighing apparatus (12) being applicable to vacuum environment is placed with in drying box;
Described quartzy balance weighing apparatus comprises base (14), support column (15), the arm beam of steelyard (16), left hook (20), right hook (21), rear side cantilever (17), front side cantilever pointer (18), cantilever balancing stand (19), index dial (24), left and right hook hang respectively sieve (22) that adsorbent is housed and with its etc. the counterweight (23) of quality; When adsorbent generation desorption thus Mass lost time, on front side of quartzy balance, cantilever pointer deflects, the desorption mass of the corresponding adsorbent of deflection scale.
2. a kind of controllable temperature vacuum desorption Performance Test System according to claim 1, it is characterized in that: select the container holding adsorbent to be stainless steel sieve, this sieve comprises the base (25) of hook (27), sidewall (26) and band sieve aperture.
3. a kind of controllable temperature vacuum desorption Performance Test System according to claim 1, is characterized in that, a stainless steel circular base plate (13) is inverted in quartzy balance weighing apparatus base lower end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520033714.2U CN204374021U (en) | 2015-01-18 | 2015-01-18 | A kind of controllable temperature vacuum desorption Performance Test System |
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| CN201520033714.2U CN204374021U (en) | 2015-01-18 | 2015-01-18 | A kind of controllable temperature vacuum desorption Performance Test System |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596879A (en) * | 2015-01-18 | 2015-05-06 | 北京工业大学 | Temperature-controllable vacuum desorption performance testing system |
| CN105136922A (en) * | 2015-08-16 | 2015-12-09 | 常州大学 | Adsorbent performance dynamic detection device |
| CN111208036A (en) * | 2020-03-03 | 2020-05-29 | 湖南科技大学 | Test method for measuring desorption characteristics of strong-hygroscopicity soil on heavy metal ions |
-
2015
- 2015-01-18 CN CN201520033714.2U patent/CN204374021U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596879A (en) * | 2015-01-18 | 2015-05-06 | 北京工业大学 | Temperature-controllable vacuum desorption performance testing system |
| CN105136922A (en) * | 2015-08-16 | 2015-12-09 | 常州大学 | Adsorbent performance dynamic detection device |
| CN111208036A (en) * | 2020-03-03 | 2020-05-29 | 湖南科技大学 | Test method for measuring desorption characteristics of strong-hygroscopicity soil on heavy metal ions |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20150603 Termination date: 20210118 |