CN208076089U - Bellows-type membrane seal - Google Patents
Bellows-type membrane seal Download PDFInfo
- Publication number
- CN208076089U CN208076089U CN201820281975.XU CN201820281975U CN208076089U CN 208076089 U CN208076089 U CN 208076089U CN 201820281975 U CN201820281975 U CN 201820281975U CN 208076089 U CN208076089 U CN 208076089U
- Authority
- CN
- China
- Prior art keywords
- bellows
- boss
- type
- membrane seal
- diaphragm
- Prior art date
- 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.)
- Active
Links
Landscapes
- Diaphragms And Bellows (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides a kind of bellows-type membrane seal, boss including being fixed on mounting flange side, it is fixed with bellows-type diaphragm below the boss, there is the bellows-type diaphragm hollow cavity, the boss to be equipped with the capillary interface being connected to respectively with the hollow cavity of the bellows-type diaphragm and capillary charging port.The utility model can effectively improve the precision of diaphragm sealing type pressure transmitter measurement minute-pressure.
Description
Technical field
The utility model belongs to technical field of pressure detection, and in particular to a kind of bellows-type membrane seal.
Background technology
Diaphragm sealing type pressure transmitter is suitable for sticky, easy crystallization, the pressure containing solid particle or Korrosionsmedium
It measures.For the sealing element of present mainstream using circular wave diaphragm as elastic deformation element, diaphragm deformation depends primarily on diaphragm
Size, when for measure minute-pressure and need diaphragm be isolated operating mode when, for ensure precision need increase diaphragm area, this not only increases
The big input of instrument, and lead to measurement accuracy degradation because diaphragm deformation is too small, greatly limit diaphragm sealing type pressure
Application of the power transmitter in minute-pressure operating mode.
Invention content
Bellows-type membrane seal provided by the utility model can effectively improve the survey of diaphragm sealing type pressure transmitter
Measure the precision of minute-pressure.
The bellows-type membrane seal of the utility model, including it is fixed on the boss of mounting flange side, the boss
Lower section is fixed with bellows-type diaphragm, and the bellows-type diaphragm has a hollow cavity, the boss be equipped with respectively with it is described
The capillary interface and capillary charging port of the hollow cavity connection of bellows-type diaphragm.
Wherein, the bellows-type diaphragm is with the axially retractable pressure measurement elasticity of equidistant coaxial annular ripple, energy
Element, it is preferred to use metal foil pipe is made.
Wherein, the boss is fixed on by the fixing screws in the middle part of mounting flange on the mounting flange.
Wherein, the opening of the capillary interface and capillary charging port is located on the side wall of the boss.Into one
It walks, the plug for sealing is detachably equipped in the capillary charging port.
Bellows-type diaphragm periphery can have flushing water ring, the flushing water ring to be fixed on described with Demountable assembling
Below boss, the outer diameter for rinsing water ring is not more than the outer diameter of the boss, the flushing water ring-side wall be equipped with supply water into
The rinse mouth entered.
Compared with prior art, the utility model due to the displacement of bellows-type diaphragm it is relatively large, compensate for filling liquid
Accuracy decline caused by transmitting makes the material that elastic deformation passes through control bellows-type diaphragm be achieved with length, improves
Flat membrane leaf seal needs the shortcomings that increasing big pressure interface, and having changed simultaneously flat membrane leaf seal cannot effectively be rushed
The drawbacks of washing.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.?
In attached drawing：
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model；
Fig. 2 is the structural schematic diagram being arranged after rinsing water ring.
Wherein, 1- mounting flanges；2- boss；3- bellows-type diaphragms；4- capillary interfaces；5- capillary charging ports；6-
Fixing screws；7- filling liquids；8- plugs；9- rinses water ring；10- rinse mouths.
Specific implementation mode
In order to be better understood from the utility model, the utility model is further retouched with reference to specific attached drawing
It states.
The bellows-type membrane seal of the utility model, such as Fig. 1, including it is fixed on the boss 2 of 1 side of mounting flange,
2 lower section of the boss is fixed with bellows-type diaphragm 3, and the bellows-type diaphragm 3 has hollow cavity, set on the boss 2
There are the capillary interface 4 being connected to respectively with the hollow cavity of the bellows-type diaphragm 3 and capillary charging port 5.
Wherein, the bellows-type diaphragm 3 is with the axially retractable pressure measurement elasticity of equidistant coaxial annular ripple, energy
Element, it is preferred to use metal foil pipe is made.3 global shape of bellows-type diaphragm be similar to accordion fold bellows, by
When outer force effect, the mechanical displacement that film surface generates is primarily not the Bending Deformation by die face, but relaxing by ripple cylinder
Exhibition or lateral deflection drive the movement of film surface central role point, in identical compression, the more round ripple film of displacement of bellows
The bigger of piece can be used for measuring lower pressure or pressure difference, improve accuracy of detection.
Wherein, the boss 2 is fixed on by the fixing screws 6 across 1 middle part of mounting flange on the mounting flange 1.
Installation of the mounting flange 1 for sealing element entirety is fixed, and boss 2 can realize the connection with pressure short tube convex form, installation
When by boss 2 and following partial insertion pressure short tube, it is especially sticky, easy that such mounting means can be suitable for measured medium
It blocks up, and not seek sampling point to have the operating mode of stop valve.
Wherein, the opening of the capillary interface 4 and capillary charging port 5 is located on the side wall of the boss 2, institute
Sensor section of the capillary interface 4 for being connected to pressure transmitter is stated, it is caused after 3 deformation of transmission bellows-type diaphragm to fill out
7 pressure change of filling liquid, the capillary charging port 5 are used to vacuumize hollow cavity where filling liquid, then fill filling liquid 7
And it seals.Further, the plug 8 for sealing is detachably equipped in the capillary charging port 5.
3 periphery of bellows-type diaphragm can have with Demountable assembling rinses water ring 9, such as Fig. 2, the flushing water ring 9
It is fixed on 2 lower section of the boss, the outer diameter for rinsing water ring 9 is not more than the outer diameter of the boss 2,9 side of flushing water ring
Wall is equipped with the rinse mouth 10 for supplying water and entering.Water after flushing can be flowed out directly from the lower section for rinsing water ring 9.Rinse water ring 9
After suit, flow directly rinses the ripple position of bellows-type diaphragm 3 by rinse mouth 10, ensures that elastic deformation is not accumulated by medium
Dirt influences, while the pressure of flushing water being avoided to cause 3 elastic deformation of bellows-type diaphragm, reduces the influence to pressure measurement.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of bellows-type membrane seal, including it is fixed on the boss (2) of mounting flange (1) side, under the boss (2)
Side is fixed with bellows-type diaphragm (3), and there is the bellows-type diaphragm (3) hollow cavity, the boss (2) to be equipped with difference
The capillary interface (4) and capillary charging port (5) being connected to the hollow cavity of the bellows-type diaphragm (3).
2. bellows-type membrane seal according to claim 1, which is characterized in that the bellows-type diaphragm (3) is
With the axially retractable pressure measurement elastic element of equidistant coaxial annular ripple, energy, it is made of metal foil pipe.
3. bellows-type membrane seal according to claim 1, which is characterized in that the boss (2) is by passing through peace
Fixing screws (6) in the middle part of dress flange (1) are fixed on the mounting flange (1).
4. bellows-type membrane seal according to claim 1, which is characterized in that the capillary interface (4) and hair
The opening of tubule charging port (5) is located on the side wall of the boss (2).
5. bellows-type membrane seal according to claim 1, which is characterized in that in the capillary charging port (5)
The detachable plug (8) being equipped with for sealing.
6. bellows-type membrane seal according to claim 1, which is characterized in that the bellows-type diaphragm (3) is outside
All Demountable assemblings have flushing water ring (9), the flushing water ring (9) to be fixed below the boss (2), the flushing water ring
(9) outer diameter is not more than the outer diameter of the boss (2), and described water ring (9) side wall that rinses is equipped with the rinse mouth for supplying water and entering
(10)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820281975.XU CN208076089U (en) | 2018-02-28 | 2018-02-28 | Bellows-type membrane seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820281975.XU CN208076089U (en) | 2018-02-28 | 2018-02-28 | Bellows-type membrane seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208076089U true CN208076089U (en) | 2018-11-09 |
Family
ID=64038455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820281975.XU Active CN208076089U (en) | 2018-02-28 | 2018-02-28 | Bellows-type membrane seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208076089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556328A (en) * | 2018-11-21 | 2019-04-02 | 中国科学院上海技术物理研究所 | One kind being used for liquid helium region capillary throttle device |
-
2018
- 2018-02-28 CN CN201820281975.XU patent/CN208076089U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556328A (en) * | 2018-11-21 | 2019-04-02 | 中国科学院上海技术物理研究所 | One kind being used for liquid helium region capillary throttle device |
| CN109556328B (en) * | 2018-11-21 | 2023-12-26 | 中国科学院上海技术物理研究所 | Capillary throttling device for liquid helium temperature zone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208076089U (en) | Bellows-type membrane seal | |
| CN102620776A (en) | Built-in middle through hole dynamic throttling element flowmeter | |
| CN202141557U (en) | Absolute pressure gauge | |
| CN101349581B (en) | Insert type flow measuring device based on MEMS sensor | |
| CN202903256U (en) | On-line washable gauge and valve integrated ultrasonic flow sensor | |
| CN209485456U (en) | A kind of ultrasonic water metering modular structure and ultrasonic water meter | |
| CN210036850U (en) | Novel temperature and pressure compensation device for gas flowmeter | |
| CN204241051U (en) | Table gauge valve integrated ultrasonic flow sensor and corresponding IC-card flowmeter | |
| CN102620775A (en) | Middle through hole movable throttling element flow meter capable of preventing blockage | |
| CN202018309U (en) | L-shaped Pitot tube flow meter | |
| CN212110152U (en) | Non-full pipe type electromagnetic flowmeter | |
| CN209197970U (en) | The multi-parameter pressure sensor of built-in dual sensor | |
| CN104236644A (en) | Novel water meter with middle-through-hole movable throttling element | |
| CN205715753U (en) | Ultrasound wave valve table | |
| CN205538833U (en) | Ultrasonic wave formula oxygen concentration sensor | |
| CN205175474U (en) | Intelligent wedge flow gauge of integration | |
| CN210375244U (en) | High-maintenance right-angle electromagnetic flowmeter | |
| CN202101805U (en) | Straight-through type fluid pressure gauge | |
| CN205785649U (en) | Blade damp type optical fiber differential pressure pickup is popped one's head in | |
| CN105806547A (en) | Blade-type damping optical-fiber differential pressure sensing system and detection method thereof | |
| CN221177293U (en) | Power supply equipment of flowmeter | |
| CN206387455U (en) | A kind of inner lining structure of Ultrasonic water meter | |
| CN205910214U (en) | Pipe flow rate sensor | |
| CN203518975U (en) | Device for measuring vacuum booster master cylinder assembly output displacement | |
| CN204286511U (en) | Integration temperature head compensating vortex street effusion meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |