CN204832224U - High -pressure gas adsorbs automatic measuring device - Google Patents
High -pressure gas adsorbs automatic measuring device Download PDFInfo
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- CN204832224U CN204832224U CN201520565699.6U CN201520565699U CN204832224U CN 204832224 U CN204832224 U CN 204832224U CN 201520565699 U CN201520565699 U CN 201520565699U CN 204832224 U CN204832224 U CN 204832224U
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Abstract
The utility model discloses high -pressure gas adsorbs automatic measuring device belongs to and measures analysis technical field. Including controller, display, main line, adsorption tanks, constant temperature bath, a plurality of gas cylinder and the pipeline of supplying gas, main line one end feeds through with adsorption tanks with gas cylinder intercommunication, the other end through the pipeline of respectively supplying gas, and adsorption tanks lie in the constant temperature bath, each induction -pipe all is equipped with the admission valve on the road, be equipped with precision pressure gauge on the main line and be located precision pressure gauge and adsorption tanks between first valve, still including being located vacuum tube way between precision pressure gauge and the first valve and that be equipped with the second valve, its intercommunication main line and vacuum pump, admission valve, first valve, second valve, precision pressure gauge, display and vacuum pump all are connected with the controller electricity. The utility model discloses an under having ensured identical experiment condition, accomplish adsorbent of the same race automatically and to the gaseous absorption experiment of different adsorbates, avoidd the influence of human factor, reduced measuring error, improved and compared precision and efficiency of software testing.
Description
Technical field
The utility model relates to Measurement and analysis technical field, particularly gases at high pressure absorption self-operated measuring unit.
Background technology
Along with the development of pressure swing adsorption technique process, possess good adsorbent performance and gas optionally adsorbent exploitation receive much attention.In the test process of adsorbent basic property, the measurement quantification of adsorption isothermal characterizes adsorbent to adsorbate adsorptive power, simultaneously also for the design of pressure-swing adsorption process (PSA) provides thermodynamic equilibrium basis.At present, commercial test products many employings volumetric method measures adsorbance, and mostly the absorption test process of these instruments is to complete under 0 ~ 1atm condition, and the engineering design condition of reality is generally under dozens of atmospheric pressure.Due to the difference in this test purpose, adsorbent exploitation and engineering design are very restricted, are difficult to reflect and investigate the material performance in actual use developed.
Be applicable to multiple Adsorbate Gas, be widely used in the High Pressure Absorption self-operated measuring unit of porosint, nano material, novel ordered mesoporous material simultaneously, have very important research and development meaning.In High Pressure Absorption measurement, some specific areas materials demand mostly be under solution application background has special product to announce, as the methane adsorption quantitative determination of coal, but cannot provide the absorption result of other gases, its sample of sorbent type of testing is often also very limited.Due in measuring process, the time of absorption needed for complete equipilibrium is longer, and artificial cognition adsorption equilibrium efficiency is too low, differentiates that process exists larger error.Therefore, need a kind of measuring process accurate, be applicable to multiple absorption system, absorption self-operated measuring unit under elevated pressure conditions.
Existing gases at high pressure absorption self-operated measuring unit, cannot complete the control experiment of adsorbent of the same race to different Adsorbate Gas mostly.In the performance history of sorbing material, especially in the test being bordering on engineering design condition, often need to measure gas with various, the adsorptive selectivity of comparative analysis adsorbent.Existing device on sale needs replacing gas manually mostly, in dress sample, Sample storage etc., is difficult to accomplish operational completely the same, not only affects the degree of accuracy of result, the efficiency of the test also reduced.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of gases at high pressure absorption self-operated measuring unit, automatically the control experiment of adsorbent of the same race to different Adsorbate Gas adsorptive power can be completed, to improve the comparison accuracy of adsorbent of the same race to different Adsorbate Gas adsorptive power, reduce measuring error, improve testing efficiency.
The technical solution adopted in the utility model is: gases at high pressure absorption self-operated measuring unit, comprises controller, display, inert gas gas cylinder, main line, inert gas piping, adsorption tanks, temperature bath, multiple adsorbate gas cylinder and the aspirating pipeline equal with adsorbate gas cylinder quantity; Described main line one end is communicated with inert gas gas cylinder, each adsorbate gas cylinder by inert gas piping, each aspirating pipeline correspondence, and the other end is communicated with adsorption tanks, and adsorption tanks are positioned at temperature bath; Each aspirating pipeline is equipped with adsorbate gas admittance valve, inert gas piping is provided with inert gas gas admittance valve; Main line is also provided with precision pressure gauge and the first valve, described first valve is between precision pressure gauge and adsorption tanks; Also comprise vacuum-pumping pipeline, described vacuum-pumping pipeline one end is communicated with main line, and the other end is provided with vacuum pump, and vacuum-pumping pipeline is between precision pressure gauge and the first valve, and vacuum-pumping pipeline is provided with the second valve; Described adsorbate gas admittance valve, inert gas gas admittance valve, the first valve, the second valve, precision pressure gauge, vacuum pump and display are all electrically connected with controller.
Further, comprise reference pipeline and reference tank, described reference tank is arranged in temperature bath, and described reference pipeline one end is communicated with main line, and the other end is communicated with reference tank, and precision pressure gauge is between reference pipeline and vacuum-pumping pipeline.
Further, also comprise blowdown piping, described blowdown piping one end is communicated with main line, and the other end is communicated with air, and precision pressure gauge is between blowdown piping and vacuum-pumping pipeline, and blowdown piping is provided with atmospheric valve, and described atmospheric valve is electrically connected with controller.
Further, between described inert gas gas cylinder and inert gas gas admittance valve, and filtrator is equipped with between adsorbate gas cylinder and adsorbate gas admittance valve.
The beneficial effects of the utility model are: these gases at high pressure absorption self-operated measuring unit, there are multiple adsorbate gas cylinder and aspirating pipeline, and the whole course of work of system controls automatically by controller, avoid ventilation and artificial cognition adsorption equilibrium manually, evade the impact of human factor on test result, under ensure that identical experiment condition, complete the adsorption experiment of adsorbent of the same race to different Adsorbate Gas, reduce measuring error, improve the comparison accuracy of adsorbent of the same race to different Adsorbate Gas adsorptive power, simultaneously, owing to avoiding loaded down with trivial details operation consuming time in test process, testing efficiency is improved.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure, inert gas gas cylinder 11, adsorbate gas cylinder 12, filtrator 2, adsorbate gas admittance valve 30, inert gas gas admittance valve 31, atmospheric valve 4, precision pressure gauge 5, second valve 6, vacuum pump 7, the first valve 8, temperature bath 9, reference tank 91, adsorption tanks 92, main line 100, inert gas piping 110, aspirating pipeline 120, reference pipeline 130, blowdown piping 140, vacuum-pumping pipeline 150, controller 200, display 300.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Figure 1, gases at high pressure absorption self-operated measuring unit, comprises controller 200, display 300, inert gas gas cylinder 11, main line 100, inert gas piping 110, adsorption tanks 92, temperature bath 9, multiple adsorbate gas cylinder 12 and the aspirating pipeline 120 equal with adsorbate gas cylinder 12 quantity; Described main line 100 one end is communicated with inert gas gas cylinder 11, each adsorbate gas cylinder 12 by inert gas piping 110, each aspirating pipeline 120 correspondence, and the other end is communicated with adsorption tanks 92, and adsorption tanks 92 are positioned at temperature bath 9; Each aspirating pipeline 120 is equipped with adsorbate gas admittance valve 30, inert gas piping 110 is provided with inert gas gas admittance valve 31; Main line 100 is also provided with precision pressure gauge 5 and the first valve 8, described first valve 8 is between precision pressure gauge 5 and adsorption tanks 92; Also comprise vacuum-pumping pipeline 150, described vacuum-pumping pipeline 150 one end is communicated with main line 100, and the other end is provided with vacuum pump 7, and vacuum-pumping pipeline 150 is between precision pressure gauge 5 and the first valve 8, and vacuum-pumping pipeline 150 is provided with the second valve 6; Described adsorbate gas admittance valve 30, inert gas gas admittance valve 31, first valve 8, second valve 6, precision pressure gauge 5, vacuum pump 7 and display 300 are all electrically connected with controller 200.
Gases at high pressure absorption self-operated measuring unit, under 0 ~ 4Mpa air pressure range to the test of materials adsorption performance, inert gas gas cylinder 11 li load inert gas, generally load helium, this instructions is that helium is described with inert gas.Multiple adsorbate gas cylinder 12 is respectively charged into different Adsorbate Gas, for ease of explanation, multiple adsorbate gas cylinder 12 is pressed order from left to right shown in Fig. 1, number consecutively is No. 1 adsorbate gas cylinder 12, No. 2 adsorbate gas cylinders 12 etc., in order to provide Adsorbate Gas to system, therefore, comprise the aspirating pipeline 120 equal with adsorbate gas cylinder 12 quantity, corresponding with adsorbate gas cylinder 12, aspirating pipeline 120 is numbered No. 1 aspirating pipeline 120, No. 2 aspirating pipelines 120 etc., main line 100 one end is by inert gas piping 110, each aspirating pipeline 120 correspondence and inert gas gas cylinder 11, each adsorbate gas cylinder 12 is communicated with, the other end is communicated with adsorption tanks 92, in order to control Adsorbate Gas, whether the conveying of inert gas, aspirating pipeline 120 is provided with adsorbate gas admittance valve 30, inert gas piping 110 is provided with inert gas gas admittance valve 31, when adsorbate gas admittance valve 30 is opened, corresponding Adsorbate Gas is just transferred out by aspirating pipeline 120, when adsorbate gas admittance valve 30 cuts out, just Adsorbate Gas is not carried.Adsorption tanks 92 li load adsorbent, and temperature bath 9 provides specific temperature for adsorbent, and therefore, adsorption tanks 92 are positioned at temperature bath 9.The ability of the adsorbed gas scale of construction of adsorbent is measured by volumetric method.
During use, adsorbent is loaded in adsorption tanks 92.Measure as follows.The first step, close the valves such as adsorbate gas admittance valve 30, inert gas gas admittance valve 31, only open the first valve 8 and the second valve 6, vacuum pump 7 is worked, system vacuumizes, and meanwhile, the air on adsorbent is also clean by desorption.Second step, closes the second valve 6, and close the first valve 8 subsequently, open inert gas gas admittance valve 31, the helium that inert gas gas cylinder is 11 li is just transported to main line 100 by inert gas piping 110.When precision pressure gauge 5 reading reaches pressure range higher limit, close inert gas gas admittance valve 31, the reading after precision pressure gauge 5 stable reading is set to P
1.Then, open the first valve 8, precision pressure gauge 5 reading is down to P
2, because helium is not adsorbed, therefore, it is the same for opening the material amount entering the helium of system before and after the first valve 8.The volume in the space surrounded by adsorbate gas admittance valve 30, inert gas gas admittance valve 31, first valve 8 and the second valve 6 is V
1, V
1accurate calibration in advance.By P
1and V
1the material amount N of the Adsorbate Gas in the closed system that surrounded by adsorbate gas admittance valve 30, inert gas gas admittance valve 31, first valve 8 and the second valve 6 can be calculated.Open the first valve 8 subsequently, the final stationary value of accurate precision pressure meter reading is P
2, by N and P
2calculate to obtain useful volume V, useful volume be inert gas gas admittance valve 31, cumulative volume that adsorbate gas admittance valve 30, second valve 6, adsorption tanks 92 surround.3rd step, open the first valve 8 and the second valve 6, vacuum pump 7 works, and pumps the helium in system.4th step is after taking out the helium in most system, close the first valve 8 and the second valve 6, to measure adsorbent to the absorption situation of No. 1 adsorbate, then open No. 1 adsorbate gas admittance valve 30, Adsorbate Gas in No. 1 adsorbate gas cylinder 12 is just transferred away, when precision pressure gauge 5 reading reaches first force value of system requirements mensuration, close No. 1 adsorbate gas admittance valve 30, read precision pressure gauge 5 reading P
3, according to P
3, demarcate volume V
1, calculate the material amount N of No. 1 Adsorbate Gas of the system of entering
1.Open the first valve 8, the adsorbent in adsorption tanks 92 adsorbs No. 1 Adsorbate Gas, after precision pressure gauge 5 stable reading, adsorption equilibrium is described, reads now precision pressure gauge 5 reading P
4, according to the useful volume V that second step obtains, calculate after opening the first valve 8, the material amount N of No. 1 Adsorbate Gas in system
2, be so N by the material amount of adsorbent No. 1 Adsorbate Gas
1-N
2.5th step carries out the operation of the 3rd step and the 4th step repeatedly, and obtain in whole pressure range ability, under different pressures value, adsorbent is to the adsorbance of No. 1 adsorbate.After testing a kind of Adsorbate Gas, repeat the 3rd step, adsorbent desorption and regeneration, changes another kind of Adsorbate Gas, repeats the 3rd step to the operation of the 5th step, obtains the adsorbance of this adsorbent to another kind of adsorbate.
And controller 200 is for automatic control survey process, namely controller 200 reads the reading of precision pressure gauge 5 automatically, reading according to precision pressure gauge 5 controls adsorbate gas admittance valve 30 automatically, inert gas gas admittance valve 31, first valve 8 and the opening and closing of the second valve 6 and the duty of vacuum pump 7, finally test result is shown by display 300, therefore, described precision pressure gauge 5, described adsorbate gas admittance valve 30, inert gas gas admittance valve 31, first valve 8, second valve 6, precision pressure gauge 5, vacuum pump 7 and display 300 are all electrically connected with controller 200.
These gases at high pressure absorption self-operated measuring unit, owing to having multiple adsorbate gas cylinder 12 and aspirating pipeline 120, the whole course of work of system controls automatically by controller 200, avoid ventilation and artificial cognition adsorption equilibrium manually, evade the impact of human factor on test result, under ensure that identical experiment condition, complete the adsorption experiment of adsorbent of the same race to different Adsorbate Gas, reduce measuring error, improve the comparison accuracy of adsorbent of the same race to different Adsorbate Gas adsorptive power, simultaneously, owing to avoiding loaded down with trivial details operation consuming time in test process, testing efficiency is improved.Controller 200 automatic decision adsorption equilibrium, makes this device applicability stronger, can measure micropore, high pressure isothermal adsorption situation that is mesoporous, large pore material.
Preferably, as shown in Figure 1, reference pipeline 130 and reference tank 91 is comprised, described reference tank 91 is arranged in temperature bath 9, described reference pipeline 130 one end is communicated with main line 100, and the other end is communicated with reference tank 91, and precision pressure gauge 5 is between reference pipeline 130 and vacuum-pumping pipeline 150.
After opening the first valve 8 compared with opening before the first valve 8, because adsorbent is to the absorption of Adsorbate Gas, once the receptivity of adsorbent to Adsorbate Gas is strong, the pressure of system sharply declines, to such an extent as to below the precision that can drop to precision pressure gauge 5, the accuracy of impact test, therefore, comprise reference pipeline 130 and reference tank 91, described reference tank 91 is arranged in temperature bath 9, described reference pipeline 130 one end is communicated with main line 100, and the other end is communicated with reference tank 91, and precision pressure gauge 5 is between reference pipeline 130 and vacuum-pumping pipeline 150.If the cumulative volume of reference tank 91 and reference pipeline 130 is V
c, after arranging reference pipeline 130 and after reference tank 91, because reference pipeline 130 is communicated with main line 100, therefore, gas can enter reference tank 91, and therefore, the volume in the space surrounded by adsorbate gas admittance valve 30, inert gas gas admittance valve 31, first valve 8 and the second valve 6 is just by original V
1become V
1+ V
c, reference tank 91 is equivalent to increase gas conserve space.
Preferably, also comprise blowdown piping 140, described blowdown piping 140 one end is communicated with main line 100, the other end is communicated with air, and precision pressure gauge 5 is between blowdown piping 140 and vacuum-pumping pipeline 150, blowdown piping 140 is provided with atmospheric valve 4, and described atmospheric valve 4 is electrically connected with controller 200.
Due to during by opening adsorbate gas admittance valve 30 Adsorbate Gas of adsorbate gas cylinder 12 li being inputted, accurately can not control the input quantity of Adsorbate Gas, make the reading of precision pressure gauge 5 compared with the force value of mensuration, on the low side or higher, as on the low side, can continue to open adsorbate gas admittance valve 30 and input Adsorbate Gas, and if higher, just need to discharge unnecessary Adsorbate Gas.Therefore, also comprise blowdown piping 140, described blowdown piping 140 one end is communicated with main line 100, and the other end is communicated with air, and precision pressure gauge 5 is between blowdown piping 140 and vacuum-pumping pipeline 150, and blowdown piping 140 is provided with atmospheric valve 4.When precision pressure gauge 5 reading is higher, open atmospheric valve 4, unnecessary Adsorbate Gas is discharged through blowdown piping 140.And atmospheric valve 4 is electrically connected with controller 200, automatically controlled the open and close of atmospheric valve 4 by controller 200, control accuracy is higher.
Preferably, between described inert gas gas cylinder 11 and inert gas gas admittance valve 31, and filtrator 2 is equipped with between adsorbate gas cylinder 12 and adsorbate gas admittance valve 30.
In order to filter out the impurity in helium and Adsorbate Gas, improve the purity of helium and Adsorbate Gas, thus raising measuring accuracy, therefore, between described inert gas gas cylinder 11 and inert gas gas admittance valve 31, and be equipped with filtrator 2 between adsorbate gas cylinder 12 and adsorbate adsorbate gas admittance valve 30.
Claims (4)
1. gases at high pressure absorption self-operated measuring unit, is characterized in that: comprise controller (200), display (300), inert gas gas cylinder (11), main line (100), inert gas piping (110), adsorption tanks (92), temperature bath (9), multiple adsorbate gas cylinder (12) and the aspirating pipeline (120) equal with adsorbate gas cylinder (12) quantity; Described main line (100) one end is communicated with inert gas gas cylinder (11), each adsorbate gas cylinder (12) by inert gas piping (110), each aspirating pipeline (120) correspondence, the other end is communicated with adsorption tanks (92), and adsorption tanks (92) are positioned at temperature bath (9); Each aspirating pipeline (120) is equipped with adsorbate gas admittance valve (30), inert gas piping (110) is provided with inert gas gas admittance valve (31); Main line (100) is also provided with precision pressure gauge (5) and the first valve (8), described first valve (8) is positioned between precision pressure gauge (5) and adsorption tanks (92); Also comprise vacuum-pumping pipeline (150), described vacuum-pumping pipeline (150) one end is communicated with main line (100), the other end is provided with vacuum pump (7), and vacuum-pumping pipeline (150) is positioned between precision pressure gauge (5) and the first valve (8), vacuum-pumping pipeline (150) is provided with the second valve (6); Described adsorbate gas admittance valve (30), inert gas gas admittance valve (31), the first valve (8), the second valve (6), precision pressure gauge (5), vacuum pump (7) and display (300) are all electrically connected with controller (200).
2. gases at high pressure absorption self-operated measuring unit as claimed in claim 1, it is characterized in that: comprise reference pipeline (130) and reference tank (91), described reference tank (91) is arranged in temperature bath (9), described reference pipeline (130) one end is communicated with main line (100), the other end is communicated with reference tank (91), and precision pressure gauge (5) is positioned between reference pipeline (130) and vacuum-pumping pipeline (150).
3. gases at high pressure absorption self-operated measuring unit as claimed in claim 1 or 2, it is characterized in that: also comprise blowdown piping (140), described blowdown piping (140) one end is communicated with main line (100), the other end is communicated with air, and precision pressure gauge (5) is positioned between blowdown piping (140) and vacuum-pumping pipeline (150), blowdown piping (140) is provided with atmospheric valve (4), and described atmospheric valve (4) is electrically connected with controller (200).
4. gases at high pressure absorption self-operated measuring unit as claimed in claim 1 or 2, it is characterized in that: between described inert gas gas cylinder (11) and inert gas gas admittance valve (31), and be equipped with filtrator (2) between adsorbate gas cylinder (12) and adsorbate gas admittance valve (30).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520565699.6U CN204832224U (en) | 2015-07-30 | 2015-07-30 | High -pressure gas adsorbs automatic measuring device |
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| CN201520565699.6U CN204832224U (en) | 2015-07-30 | 2015-07-30 | High -pressure gas adsorbs automatic measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493989A (en) * | 2022-11-15 | 2022-12-20 | 北京精微高博仪器有限公司 | Multi-path vacuumizing control method of static physical adsorption instrument and adsorption instrument |
-
2015
- 2015-07-30 CN CN201520565699.6U patent/CN204832224U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493989A (en) * | 2022-11-15 | 2022-12-20 | 北京精微高博仪器有限公司 | Multi-path vacuumizing control method of static physical adsorption instrument and adsorption instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20151202 Termination date: 20170730 |