CN206609561U - The fluid isolators of zero liquid level difference - Google Patents
The fluid isolators of zero liquid level difference Download PDFInfo
- Publication number
- CN206609561U CN206609561U CN201720283563.5U CN201720283563U CN206609561U CN 206609561 U CN206609561 U CN 206609561U CN 201720283563 U CN201720283563 U CN 201720283563U CN 206609561 U CN206609561 U CN 206609561U
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- CN
- China
- Prior art keywords
- tube
- pressure gauge
- free end
- shell
- calibrating
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- 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
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides the fluid isolators of zero liquid level difference.Epicoele shell and cavity of resorption shell compress flexible barrier film by packing ring, U-tube is connected with by upper snap joint on epicoele shell, upper free end and lower port are provided with upper U-tube bottom, lower U-tube is connected with by lower snap joint in cavity of resorption shell bottom, subordinate free end and upper port on lower U-tube.Two U-tubes are in same level with free end and elastomeric isolation film.The utility model can be got up the pressure gauge that prohibit oil with the oily physical isolation of calibrating by barrier film, be effectively ensured after pressure gauge is traced to the source and used safety；Double " U-shaped " pipeline structures of isolator ensure that the fluid column difference of barrier film both sides liquid is 0, therefore when oil pressure table is prohibited in calibrating, be not required to consider compensation of the fluid column difference to being detected pressure gauge indicating value, improve the efficiency of verification process and the accuracy of verification result.Suitably used as pressure gauge calibrating isolator.
Description
Technical field
The utility model is related to the fluid isolators of zero liquid level difference, belongs to pressure tool instrument calibration, calibration, measuring technology
Field.
Background technology
Pressure gauge is widely used in the fields such as industrial stokehold, technology measurement, its working environment, working media
It is not quite similar.Some manometric working medias, which have, clearly prohibits oil requirement, such as oxygen gauge, ammonia table, Acetylene gauge, therefore
Have to use isolator in calibration, such pressure gauge of calibrating of test and isolate tested table and calibrating are oily.It is general
Logical isolator has two interfaces up and down, is connected to when using between pressure criteria and tested pressure gauge, utilizes flexible sheet
Simultaneously in the vertical direction comes calibrating with oily and tested table working media physical isolation to conducting pressure.Therefore, isolator plus
Enter so that reference pressure value is not fully loaded on tested pressure gauge, i.e., a part therein is by between liquid level above and below isolator
Differential pressure offset.The usual way solved the above problems is to measure the height of two media in isolator respectivelyh 1、h 2, then
The density of every kind of medium is found respectivelyρ 1、ρ 2, and examine and determine the acceleration of gravity in placeg, and then calculate liquid level above and below isolator
Between differential pressurep=ρ 1 g h 1+ρ 2 g h 2To be compensated to being detected manometric indicating value.But, different pressures in verification process
The height of two media, density are all changes in lower isolator, therefore above-mentioned solution can not be that the indicating value for being detected table be carried
For accurate pressure compensation.
Utility model content
In order to overcome the shortcoming that prior art is present, the utility model provides the fluid isolators of zero liquid level difference.
The isolator enables inspection timing standard pressure value complete to eliminate the differential pressure above and below isolator between liquid level
Portion is loaded on tested pressure gauge.Solve the technical problem of the efficiency of raising verification process and the accuracy of verification result.
The utility model solves technical problem can be adopted scheme：
Epicoele shell and cavity of resorption shell compress flexible barrier film by packing ring, are connected with epicoele shell by upper snap joint
Upper U-tube, is provided with upper free end and lower port in upper U-tube bottom, lower U is connected with by lower snap joint in cavity of resorption shell bottom
Shape pipe, subordinate free end and upper port on lower U-tube.
Two U-tubes are in same level with free end and elastomeric isolation film.
Good effect, the utility model can be acted the pressure gauge for prohibiting oil with the oily physical isolation of calibrating by barrier film
Come, be effectively ensured after pressure gauge is traced to the source and used safety；Double " U-shaped " pipeline structures of isolator ensure that barrier film both sides liquid
The fluid column difference of body is 0, therefore when oil pressure table is prohibited in calibrating, is not required to consider compensation of the fluid column difference to being detected pressure gauge indicating value,
Improve the efficiency of verification process and the accuracy of verification result.Suitably used as pressure gauge calibrating isolator.
Brief description of the drawings
Fig. 1 is the fluid isolators structural representation of the utility model zero liquid level difference.
In figure, 1. epicoele shells, 2. cavity of resorption shells, 3. elastomeric isolation films, U-tube on 4., 5. times U-tubes, 6. times snap joint,
7. on snap joint, 8. times free ends, free end, 10. lower ports, 11. upper ports, 12. packing rings on 9..
Embodiment
As shown in figure 1, epicoele shell 1 and cavity of resorption shell 2 compress flexible barrier film 3 by packing ring 12, pass through on epicoele shell
Upper snap joint 7 is connected with U-tube 4, and upper free end 9 and lower port 10 are provided with upper U-tube bottom, logical in cavity of resorption shell bottom
Cross down snap joint 6 and be connected with lower U-tube 5, subordinate free end 8 and upper port 11 on lower U-tube.
Two U-tubes are in same level with free end and elastomeric isolation film.
The utility model uses process：
Appropriate pure water is filled in the inner chamber of part and " U-shaped " pipe under barrier film when using, water is tested pressure
The working media of power table.The free end of " U-shaped " pipe is connected by snap joint with pressure criteria, by the free end of " U-shaped " pipe
It is connected by snap joint with tested pressure gauge.The working media of the so working media of pressure criteria and tested table passes through this reality
After new fluid isolators structure, the height that their own fluid column rises is respectively equal to the height of fluid column decline, therefore
The poor fluid isolators of zero liquid level of the present utility model make it that the fluid column difference of barrier film media of both sides is 0 so that normal pressure is complete
Portion has been loaded on tested pressure gauge.
It is described above, only it is preferred embodiment of the present utility model, not makees any formal to the utility model
Limitation.Any simple modification, equivalent variations and the modification made according to technical spirit of the present utility model to above example,
In the range of still falling within technical solutions of the utility model.
Claims (2)
1. the fluid isolators of zero liquid level difference, it is characterized in that：Epicoele shell（1）With cavity of resorption shell（2）Pass through packing ring（12）Compression has bullet
Sexual isolation film（3）, pass through upper snap joint on epicoele shell（7）It is connected with U-tube（4）, upper U-tube bottom provided with it is upper from
By holding（9）And lower port（10）, lower snap joint is passed through in cavity of resorption shell bottom（6）It is connected with lower U-tube（5）, on lower U-tube
Subordinate free end（8）And upper port（11）.
2. the fluid isolators of zero liquid level difference according to claim 1, it is characterized in that：Two U-tubes and free end and bullet
Sexual isolation film is in same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720283563.5U CN206609561U (en) | 2017-03-22 | 2017-03-22 | The fluid isolators of zero liquid level difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720283563.5U CN206609561U (en) | 2017-03-22 | 2017-03-22 | The fluid isolators of zero liquid level difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206609561U true CN206609561U (en) | 2017-11-03 |
Family
ID=60165082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720283563.5U Expired - Fee Related CN206609561U (en) | 2017-03-22 | 2017-03-22 | The fluid isolators of zero liquid level difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206609561U (en) |
-
2017
- 2017-03-22 CN CN201720283563.5U patent/CN206609561U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171103 Termination date: 20180322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |