CN201983839U - Combined-type standard weighing container used for liquid flow standard calibrating device - Google Patents
Combined-type standard weighing container used for liquid flow standard calibrating device Download PDFInfo
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- CN201983839U CN201983839U CN2011201129609U CN201120112960U CN201983839U CN 201983839 U CN201983839 U CN 201983839U CN 2011201129609 U CN2011201129609 U CN 2011201129609U CN 201120112960 U CN201120112960 U CN 201120112960U CN 201983839 U CN201983839 U CN 201983839U
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- 238000005303 weighing Methods 0.000 title claims abstract description 68
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 230000013011 mating Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
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Abstract
The utility model discloses a combined-type standard weighing container, that is, a combined-type standard weighing container used for a liquid flow standard calibrating device. The combined-type standard weighing container has n standard weighing containers with different metering volumes, and all the standard weighing containers choosing mating valves for opening form a communicating vessel through the combination of the opening and the closing of the mating valve of each standard weighing container, so that the practical effect equal to 2*n-1 self-contained standard weighing containers is obtained, and the combined-type standard weighing container can improve the calibration efficiency and the calibration precision at all the calibration flow points of flowmeters with different calibers in the event that the liquid flow standard calibrating device has a very wide flow detection range.
Description
Technical field
The utility model relates to a kind of etalon in flow metering standard technique field, relates in particular to the combined type standard weighing container that is used for fluid flow useful test device.
Background technology
From the present situation of domestic and international flow standard calibrating installation, at present the calibrating of fluid flow is adopted more the way of derivation, promptly with certain regime flow
Flow of liquid cross a test section that constant flow meter to be checked is installed after, in a standard weighing container, inject this liquid continuously, accurately measure the zero hour of injecting
With stop constantly
, accurately measure simultaneously
The amount of fluid of accumulating in the time interval inner pressurd vessel can calculate the average discharge (volumetric flow rate of standard
Or weight flow
), and remove to examine and determine above-mentioned constant flow to be checked in this normal flow.Because
Flow in time
Be stable, therefore can think that this standard average discharge is exactly a standard instantaneous delivery (instantaneous volume flow rate
Or instantaneous weight flow
).In above-mentioned verification process, for the flowmeter of different bores, even, all should select the standard weighing container of suitable different metered volume for use at the different calibrating flow point of same bore flowmeter, otherwise measure
(or the amount of fluid of accumulating in the container) may be excessive or too small, and this will reduce calibrating efficient or calibration accuracy.The existing standard weighing container is freestanding, under the situation that flow calibrating scope at flow standard calibrating installation number very big, the standard weighing container again can not be a lot, adopt free-standing standard weighing container to be difficult on a lot of calibrating flow points, all satisfy calibrating efficient and calibration accuracy requirement.
Summary of the invention
Consider the above-mentioned restriction of free-standing standard weighing container, the combined type standard weighing container of development is based on the various combination of the standard weighing container of several different metered volume, because the number of combinations of these standard weighing container will be much larger than the number of these containers, thereby can examine and determine flow point at each and all satisfy the requirement of examining and determine efficient and calibration accuracy simultaneously.
Shown in Figure 1 in technical scheme that the utility model adopted such as the Figure of description: the standard weighing container of development is a kind of combined type standard weighing container, combined type standard weighing container has the standard weighing container of n different metered volume, the number n of container is determined by flow calibrating scope, metered volume with the standard weighing container of minimum is a reference volume, and the metered volume of each standard weighing container from small to large is followed successively by the binary multiple (2 of reference volume
0, 2
1, 2
2..., 2
N-1), all respectively there is a shut-off valve corresponding with this container the top of each standard weighing container with the below, the shut-off valve of top is a sluice valve, the shut-off valve of below is a communicating valve, there is a common buffer container top of all sluice valves, calibrating liquid injects this buffer container, the top connecting pipe of each sluice valve all is communicated to the bottom of this buffer container, the bottom connecting pipe of sluice valve passes to the top of the standard weighing container of this valve correspondence, there is a common communicating pipe below of all communicating valves, the top connecting pipe of each communicating valve all is communicated to the bottom of the standard weighing container of this valve correspondence, each communicating valve bottom connecting pipe all is communicated to communicating pipe, communicating pipe, there was a calibrating valve below, and the top connecting pipe of calibrating valve is communicated to communicating pipe, and a blow-off line is arranged at the bottom of calibrating valve.The course of work of this combined type standard weighing container is as follows: the sluice valve and the communicating valve of each standard weighing container correspondence must be opened or close simultaneously simultaneously, by the various combination of the corresponding valve opening of each standard weighing container, can form from 1 times to 2
n2 of-1 times of reference volume
n-a kind of standard weighing container combination.For example, among the figure 2
0With 2
N-1The upper and lower valve of standard weighing container is opened, and under the situation that the calibrating valve cuts out, makes the communicating valve of two unlatchings and communicating pipe these two containers form linker, and two liquid level synchronization liftings that container is interior have promptly been formed one 2
N-1The standard weighing container combination of+1 times of benchmark area.Behind the calibrating liquid injection buffer container from the test section that constant flow meter to be checked is installed, flow into the standard weighing container through the sluice valve of opening, the liquid of injection standard weighing container combination flows out ajutage according to the keying of calibrating valve or builds up in the combination of standard weighing container.
The beneficial effects of the utility model are, under the very large situation of flow calibrating scope of fluid flow useful test device, with less standard weighing container number, realize more standard weighing container number of combinations, can improve calibrating efficient and the calibration accuracy of different bore flowmeters at each calibrating flow point.
Description of drawings
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the synoptic diagram of the utility model embodiment.
In Fig. 1 and Fig. 2: 1. buffer container, 2. sluice valve, 3. standard weighing container, 4. communicating valve, 5. communicating pipe, 6. examine and determine valve, 7. standard liquid level gauge, the 8. upper overflow vessel of high pressure, 9. operating valve, 10. variable valve, 11. regulate and use flowmeters, 12. constant flow meters to be checked, 13. test section, the next overflow vessel of 14. normal pressures, 15. normal pressure hoppers, 16. supercharge pumps, 17. non-return valve, 18. high pressure hoppers, 19. ebullators, 20. run-down pipe, 21. high-pressure air pipes, 22. circulation pipes.
Embodiment
In the embodiment of Fig. 2, the utility model is as another patent of invention of declaring [fluid flow useful test device, (application number 201110093086.3)] in a kind of new alternate embodiments of original free-standing standard weighing container use, promptly go to replace free-standing standard weighing container in the former scheme with combined type standard weighing container.In Fig. 2, the fluid flow useful test device of the scheme of employing new technology is by the upper overflow vessel 8 of high pressure, the next overflow vessel 14 of normal pressure, the test section 13 at constant flow meter to be checked 12 places, standard weighing container 3, can high-acruracy survey standard weighing container the measuring instrument 7 of liquid levels or weight in 3, high pressure hopper 18, normal pressure hopper 15, supercharge pump 16, non-return valve 17, ebullator 19, sluice valve 2, communicating valve 4, operating valve 9, calibrating valve 6 and corresponding pipeline are formed, wherein, sluice valve 2, communicating valve 4, operating valve 9 all adopts pneumatic shut-off valve with calibrating valve 6, and variable valve 10 adopts air operated controller.The upper overflow vessel 8 of high pressure is to adopt the overflow structure to obtain to stablize the closed container of liquid level, liquid in the high pressure hopper 18 injects the upper overflow vessel 8 of high pressure by ebullator 19 through circulation pipe 22, these test sections 13 of a part through being connected to upper overflow vessel 8 fluid spaces of high pressure that inject liquid are flowed directly to the fluid space of the next overflow vessel 14 of normal pressure, and the overflow that another part becomes the upper overflow vessel 8 of high pressure is flowed back to high pressure hopper 18 through run-down pipe 20 again.The next overflow vessel 14 of normal pressure has the overflow structure identical with the upper overflow vessel of high pressure 8, but acts on atmospheric pressure on its liquid level, so need not to be closed container.High pressure hopper 18 is a closed container, is all acting on through the onesize air pressure of high-pressure air pipe 21 from same high-pressure air source on its liquid level with on the liquid level of the upper overflow vessel 8 of high pressure.Liquid from test section 13 becomes overflow in the next overflow vessel 14 of normal pressure, the double buffer container 1 of doing combined type standard weighing container of overflow groove in the next overflow vessel 14 of normal pressure can be provided with buffer container 1 separately so more in addition.The buffer container 1 of combined type standard weighing container has the self-equilibrating function of excess flow, when the spillway discharge that flows into buffer container 1 during more than the spillway discharge that flows out, liquid level in the buffer container 1 rises, the spillway discharge of outflow is also increased thereupon, the spillway discharge that flows out is increased to when identical with the spillway discharge that flows into, liquid level in the buffer container 1 stops to rise, and overflow this moment is in steady flow condition, and the sluice valve of this overflow through opening flow to standard weighing container 3.The communicating valve 4 of each standard weighing container 3 is corresponding keyings with sluice valve 2, and the standard weighing container 3 that all communicating valves 4 are opened is formed a connection container, and the liquid level in the standard weighing container 3 of each gating is a synchronization lifting.A master gauge 7 was installed on the communicating pipe 5 of standard weighing container 3 bottoms, when calibrating valve 6 cuts out, when the liquid level in the standard weighing container 3 rose gradually, the pressure size that the variation of liquid level and master gauge 7 are experienced was one to one, and master gauge 7 is measuring liquid level in view of the above.When calibrating valve 6 was opened, the liquid in the standard weighing container flowed into normal pressure hopper 15, and the liquid in the normal pressure hopper 15 pumps into the high pressure hopper by supercharge pump 16 through non-return valve 17.The course of work of this embodiment: after several calibrating flow points of constant flow meter 12 to be checked are input to industrial computer (not drawing among the figure) in advance, whole verification process just will carry out under the control of industrial computer automatically.Industrial computer at first calculates standard weighing container 3 and should adopt which kind of combination on certain calibrating flow point, makes to begin under the situation of liquid level and timing end liquid level in given timing, and the timing time that verification process obtains is in sizeable interval.Then, industrial computer is according to the standard weighing container combination that calculates, and the sluice valve 2 of those standard weighing container 3 correspondences of control gating is opened with communicating valve 4, and opens pneumatic operating valve 9 and pneumatic calibrating valve 6, start cycles pump 19 and supercharge pump 16.Industrial computer also will be regulated variable valve 10 apertures according to the measured discharge value of regulating with flowmeter 11, makes stability of flow at last on the calibrating flow point that requires.Behind stability of flow, industrial computer is controlled pneumatic calibrating valve 6 and is closed, liquid level in the standard weighing container 3 of each gating rises, avoiding pneumatic calibrating valve 6 closes initial stage pressure and changes the unsettled period, two liquid levels in the stable liquid level change interval of rising of selection pressure begin liquid level as timing and timing finishes liquid level, thereby obtain and these two timing times that liquid level is corresponding.Because the liquid volume in each standard weighing container 3 between these two liquid levels is known in advance, after event obtains timing time by timing, just can be regarded as to such an extent that this calibrating flow is put flow value accurately, and remove to compare the output signal value of constant flow 12 correspondences to be checked in this value as standard.Finish constant flow meter 12 to be checked on request after the calibration operation of this calibrating flow point, industrial computer just turns to the calibration operation of constant flow meter 12 next calibrating flow points to be checked automatically, and its course of work is the same.
Claims (1)
1. combined type standard weighing container that is used for fluid flow useful test device, it is characterized in that: combined type standard weighing container has the standard weighing container (3) of n different metered volume, the number n of container is determined by flow calibrating scope, metered volume with the standard weighing container of minimum is a reference volume, the metered volume of each standard weighing container from small to large is followed successively by the binary multiple (20 of reference volume, 21,22,2n-1), all respectively there is a shut-off valve corresponding with this container the top of each standard weighing container with the below, the shut-off valve of top is sluice valve (2), the shut-off valve of below is communicating valve (4), there is a common buffer container (1) top of all sluice valves, calibrating liquid injects this buffer container, the top connecting pipe of each sluice valve all is communicated to the bottom of this buffer container, the bottom connecting pipe of sluice valve passes to the top of the standard weighing container of this valve correspondence, there is a common communicating pipe (5) below of all communicating valves, the top connecting pipe of each communicating valve all is communicated to the bottom of the standard weighing container of this valve correspondence, each communicating valve bottom connecting pipe all is communicated to communicating pipe, a calibrating valve (6) was arranged below communicating pipe, the top connecting pipe of calibrating valve is communicated to communicating pipe, and a blow-off line is arranged at the bottom of calibrating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201129609U CN201983839U (en) | 2011-04-18 | 2011-04-18 | Combined-type standard weighing container used for liquid flow standard calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201129609U CN201983839U (en) | 2011-04-18 | 2011-04-18 | Combined-type standard weighing container used for liquid flow standard calibrating device |
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| Publication Number | Publication Date |
|---|---|
| CN201983839U true CN201983839U (en) | 2011-09-21 |
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|---|---|---|---|
| CN2011201129609U Expired - Fee Related CN201983839U (en) | 2011-04-18 | 2011-04-18 | Combined-type standard weighing container used for liquid flow standard calibrating device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879046A (en) * | 2012-09-24 | 2013-01-16 | 长沙威胜能源产业技术有限公司 | Water tank used in weighing method for testing flow rates of water meters |
| CN103837214A (en) * | 2014-03-25 | 2014-06-04 | 重庆市计量质量检测研究院 | Combined container type gas flow detection device by pVTt method |
| CN105757448A (en) * | 2016-04-07 | 2016-07-13 | 核工业理化工程研究院 | Accurate gas sub-packaging device |
| CN106768207A (en) * | 2017-01-17 | 2017-05-31 | 北京远东仪表有限公司 | A kind of weighing system for water flow device |
| CN108167169A (en) * | 2018-03-05 | 2018-06-15 | 中芳特纤股份有限公司 | A kind of metering pump control system for accurately controlling flow |
| CN112665672A (en) * | 2020-12-18 | 2021-04-16 | 江西拓泓新材料有限公司 | Tantalum-niobium extraction material flow measuring method and device |
-
2011
- 2011-04-18 CN CN2011201129609U patent/CN201983839U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879046A (en) * | 2012-09-24 | 2013-01-16 | 长沙威胜能源产业技术有限公司 | Water tank used in weighing method for testing flow rates of water meters |
| CN103837214A (en) * | 2014-03-25 | 2014-06-04 | 重庆市计量质量检测研究院 | Combined container type gas flow detection device by pVTt method |
| CN103837214B (en) * | 2014-03-25 | 2017-02-01 | 重庆市计量质量检测研究院 | Combined container type gas flow detection device by pVTt method |
| CN105757448A (en) * | 2016-04-07 | 2016-07-13 | 核工业理化工程研究院 | Accurate gas sub-packaging device |
| CN105757448B (en) * | 2016-04-07 | 2018-11-16 | 核工业理化工程研究院 | The accurate subpackage apparatus of gas |
| CN106768207A (en) * | 2017-01-17 | 2017-05-31 | 北京远东仪表有限公司 | A kind of weighing system for water flow device |
| CN108167169A (en) * | 2018-03-05 | 2018-06-15 | 中芳特纤股份有限公司 | A kind of metering pump control system for accurately controlling flow |
| CN112665672A (en) * | 2020-12-18 | 2021-04-16 | 江西拓泓新材料有限公司 | Tantalum-niobium extraction material flow measuring method and device |
| CN112665672B (en) * | 2020-12-18 | 2024-03-29 | 江西拓泓新材料有限公司 | Tantalum-niobium extraction material flow metering method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20130418 |