CN202305358U - True density instrument using gas displacement method - Google Patents
True density instrument using gas displacement method Download PDFInfo
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- CN202305358U CN202305358U CN2011204362075U CN201120436207U CN202305358U CN 202305358 U CN202305358 U CN 202305358U CN 2011204362075 U CN2011204362075 U CN 2011204362075U CN 201120436207 U CN201120436207 U CN 201120436207U CN 202305358 U CN202305358 U CN 202305358U
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- sample cell
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- vent line
- real density
- gas displacement
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Abstract
The utility model discloses a true density instrument using a gas displacement method and belongs to a density measuring instrument. The true density instrument comprises a reference cavity, a vent line, a control valve, a pressure gauge and a sample pool, wherein one end of the vent line is arranged on the reference cavity and communicated with the inside of the reference cavity, and the control valve and the pressure gauge are arranged on the vent line; the inner cavity of the sample pool is a test cavity, and the sample pool is provided with an opening communicated with the test cavity; and the opening of the sample pool is hermetically connected with the other end of the vent line, so that the test cavity of the sample pool is communicated with the inside of the reference cavity by virtue of the vent line. Because in the true density instrument, the inner cavity of the sample pool is taken as the test cavity, a test can be implemented under a condition that the sample pool is not required to be put into a test barrel, thereby avoiding the problem that when a small-volume material is tested, the test accuracy is low due to the influenced of large volume of the inner cavity of the traditional test barrel. The true density instrument disclosed by the utility model has the advantages of simple structure, convenience in operation and high test accuracy.
Description
Technical field
The utility model relates to density measuring instrument, relates in particular to a kind of real density appearance that utilizes the gas displacement method of measuring density of material.
Background technology
The gas displacement method is the Archimedes principle of application of gas displacement; The volume that utilizes sample to arrange gas under certain condition comes the volume of working sample; Accurately measure the true volume of measured material, thereby utilize formula density=quality ÷ volume to obtain the real density of measured material.
Utilize the real density appearance structure of gas displacement method as shown in Figure 1 at present; By test bucket 2 and reference cavity 1; Be arranged on gland bonnet 4 and the sample cell 3 that is arranged in the test bucket 2 on the test bucket 2; Vent line 5 connections through being connected between reference cavity 1 and test bucket 2, vent line 5 is provided with operation valve 6 and pressure gauge 7.During test, put into sample cell to the sample of certain known quality earlier, the gland bonnet of opening then on the test bucket is put into the test bucket with the sample cell that sample is housed in it, covers test bucket gland bonnet, and beginning is test automatically.Reach the purpose that inserts gas circuit formation test chamber because sample cell need from top to bottom be put into the test bucket usually, the present real density appearance that utilizes the gas displacement method often is called as " going up the dress formula " real density appearance.
Above-mentioned " go up dress formula " real density appearance can both be put in the test chamber for the sample cell of the various volumes that adapt to different sample sizes, makes the volume of test chamber must be greater than the volume of the sample cell of maximum volume.Can both put into test chamber though satisfied the sample cell that makes maximum volume like this; But but cause when using the small samples pond; Sample cell is packed into when testing after sealing in the test bucket; In the sample test chamber that " test bucket+sample cell " constitutes a large amount of remaining wasted space are arranged, make the test chamber volume utilization low; The volume change that is caused by the sample i.e. ratio of " active volume " and test chamber volume (active volume than) reduces; And this ratio reduces, and with making that the accuracy of test result is lower under same pressure test precision conditions, is difficult to guarantee to record result's accuracy.And, to sample cell be put into the test bucket during owing to test, add operations such as gland bonnet, also there is unhandy problem.
The utility model content
The utility model embodiment provides a kind of real density appearance that utilizes the gas displacement method; Can solve and test bucket is set at present exists the specimen volume hour, be difficult to guarantee the deficiency of precision of test result as the real density appearance that utilizes the gas displacement method of test chamber.
Following for addressing the above problem the technical scheme that the utility model provides:
The utility model embodiment provides a kind of real density appearance that utilizes the gas displacement method, and this real density appearance comprises:
Reference cavity, vent line, operation valve, pressure gauge and sample cell; Wherein,
Said vent line one end is arranged on the reference cavity, with the reference cavity internal communication, said operation valve and pressure gauge is set on the vent line;
Said sample cell inner chamber is a test chamber, and sample cell is provided be communicated with said test chamber uncovered;
Uncovered and the said vent line other end of said sample cell is tightly connected, and the said test chamber that makes sample cell is communicated with in said vent line and said reference cavity.
Above-mentioned real density appearance, the uncovered upper end that is arranged on said sample cell of said sample cell.
Above-mentioned real density appearance, a uncovered extreme direction that is connected of said vent line and said sample cell down.
Above-mentioned real density appearance, said real density appearance also comprises: seal member is arranged on the uncovered other end that is connected of vent line and said sample cell.
Above-mentioned real density appearance, the uncovered outer annular projection that is provided with of said sample cell.
Above-mentioned real density appearance, turn up in the uncovered upper edge of said sample cell, form the edge of a circle annular projection in open top end.
Above-mentioned real density appearance also is provided with the adjusting parts of regulating the sample cell internal volume in the said sample cell.
Can find out by the above-mentioned technical scheme that provides; The real density appearance that the utility model embodiment provides; Owing to as test chamber, need sample cell be put in the test bucket and test again, when having avoided test smaller size smaller sample with the sample cell inner chamber; Receive the influence of big volume test chamber, and cause the low problem of test result accuracy.This real density appearance has high and simple in structure, the easy to operate advantage of test accuracy.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The structural representation of the real density appearance that utilizes the gas displacement method that Fig. 1 provides for prior art;
The structural representation of the real density appearance that utilizes the gas displacement method that Fig. 2 provides for the utility model embodiment;
The structural representation of the sample cell of the real density appearance that utilizes the gas displacement method that Fig. 3 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment of the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the protection domain of the utility model.
To combine accompanying drawing that the utility model embodiment is done to describe in detail further below.
The utility model embodiment provides a kind of real density appearance that utilizes the gas displacement method, and is as shown in Figure 2, and this real density appearance comprises: reference cavity 20, vent line 23, operation valve 24, pressure gauge 25 and sample cell 21;
Wherein, vent line 23 1 ends are arranged on the reference cavity 20, with reference cavity 20 internal communication, operation valve 24 and pressure gauge 25 are set on the vent line 23; Sample cell 21 inner chambers are test chamber 211; Test chamber 211 plays the effect that is used to test and place sample; Sample cell 21 be provided be communicated with test chamber 211 uncovered 22; Uncovered 22 of sample cell 21 is tightly connected with vent line 23 other ends, and the test chamber 211 that makes sample cell 21 is communicated with in vent line 23 and reference cavity 20.
Uncovered 22 of the sample cell 21 of above-mentioned real density appearance is arranged on the upper end of sample cell 21, the extreme direction that vent line 23 is connected with uncovered 22 of sample cell 21 down, sample cell 21 can upwards be installed on the described vent line like this.
Above-mentioned real density appearance can also be provided with seal member 26, and seal member 26 is arranged on vent line 23 and connects on the end that uncovered 22 of sample cells 21 connect.
Be to guarantee the steadiness that sample cell is connected with vent line, can bear corresponding pressure during the assurance specimen, can sample cell 21 uncovered 22 outside be provided with annular projection.Specifically can turn up, form edge 212 (see figure 3)s of a circle annular projection in open top end in uncovered 22 upper edges that make sample cell 21.Sample cell can adopt the upper end to be provided with uncoveredly in the reality, and open top end is provided with the glass cylinder on flanging edge.
The sample cell of different big or small volumes can be set as required.The adjusting parts (not shown) of regulating the sample cell internal volume also can be set in sample cell, regulate the object piece that parts can adopt fixed volume, be pre-charged with in the sample cell during use.
Utilize above-mentioned real density appearance, during test, put into sample cell to the sample of certain known quality earlier, will directly insert in the vent line (gas circuit) as the sample cell of test chamber then, the test chamber of sample cell is communicated with reference cavity, beginning is test automatically.Because sample cell needs from bottom to top to insert test gas circuit (being vent line) usually, this real density appearance can be called " down-mounting type " real density appearance.
" down-mounting type " real density appearance of the utility model embodiment since with the inner chamber of sample cell as test chamber, avoided also having excessive space behind the sample of packing in the test chamber; It so no matter to be the bulk sample pond; Still small samples pond with existing " going up the dress formula " real density appearance at present, all has the high advantage of sample test cavity volume utilization factor; Improve the active volume ratio, thereby reached the purpose that improves measuring accuracy.On the other hand, the volume of the sample cell of existing at present " going up the dress formula " real density appearance is limited by the volume of the test bucket of adding a cover, inapplicable big volume sample-loading amount.And the sample cell of " down-mounting type " real density appearance of the utility model embodiment is not limited, can satisfy the demand of the bulk sample of packing into, to reach the purpose that improves measuring accuracy.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (7)
1. a real density appearance that utilizes the gas displacement method is characterized in that, this real density appearance comprises:
Reference cavity, vent line, operation valve, pressure gauge and sample cell; Wherein,
Said vent line one end is arranged on the reference cavity, with the reference cavity internal communication, said operation valve and pressure gauge is set on the vent line;
Said sample cell inner chamber is as test chamber, and sample cell is provided be communicated with said test chamber uncovered;
Uncovered and the said vent line other end of said sample cell is tightly connected, and the said test chamber that makes sample cell is communicated with in said vent line and said reference cavity.
2. the real density appearance that utilizes the gas displacement method according to claim 1 is characterized in that, the uncovered upper end that is arranged on said sample cell of said sample cell.
3. the real density appearance that utilizes the gas displacement method according to claim 1 and 2 is characterized in that, a uncovered extreme direction that is connected of said vent line and said sample cell down.
4. the real density appearance that utilizes the gas displacement method according to claim 1 and 2 is characterized in that, said real density appearance also comprises: seal member is arranged on the uncovered end that is connected of vent line and said sample cell.
5. the real density appearance that utilizes the gas displacement method according to claim 1 is characterized in that, the uncovered outer annular projection that is provided with of said sample cell.
6. the real density appearance that utilizes the gas displacement method according to claim 1 is characterized in that turning up in the uncovered upper edge of said sample cell, forms the edge of a circle annular projection in open top end.
7. the real density appearance that utilizes the gas displacement method according to claim 1 is characterized in that, also is provided with the adjusting parts of regulating the sample cell internal volume in the said sample cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204362075U CN202305358U (en) | 2011-11-07 | 2011-11-07 | True density instrument using gas displacement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204362075U CN202305358U (en) | 2011-11-07 | 2011-11-07 | True density instrument using gas displacement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305358U true CN202305358U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204362075U Expired - Lifetime CN202305358U (en) | 2011-11-07 | 2011-11-07 | True density instrument using gas displacement method |
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| Country | Link |
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| CN (1) | CN202305358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100261A (en) * | 2018-08-15 | 2018-12-28 | 河南工业大学 | A kind of method and device measuring wheat bran and its structure sheaf real density |
| CN112098301A (en) * | 2020-09-22 | 2020-12-18 | 国联汽车动力电池研究院有限责任公司 | Method for testing porosity of diaphragm |
-
2011
- 2011-11-07 CN CN2011204362075U patent/CN202305358U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100261A (en) * | 2018-08-15 | 2018-12-28 | 河南工业大学 | A kind of method and device measuring wheat bran and its structure sheaf real density |
| CN109100261B (en) * | 2018-08-15 | 2020-12-04 | 河南工业大学 | Method and device for measuring true density of wheat bran and structure layer thereof |
| CN112098301A (en) * | 2020-09-22 | 2020-12-18 | 国联汽车动力电池研究院有限责任公司 | Method for testing porosity of diaphragm |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |