CN106704677B - High-strength variable-rigidity diaphragm assembly - Google Patents
High-strength variable-rigidity diaphragm assembly Download PDFInfo
- Publication number
- CN106704677B CN106704677B CN201611109799.3A CN201611109799A CN106704677B CN 106704677 B CN106704677 B CN 106704677B CN 201611109799 A CN201611109799 A CN 201611109799A CN 106704677 B CN106704677 B CN 106704677B
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- compression screw
- membrane
- hard core
- metal
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Diaphragms And Bellows (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides a high-strength variable-rigidity diaphragm assembly, in particular to a diaphragm pressure sensing element suitable for high pressure, ultralow temperature and long service life, which is used for overcoming the defects of small application range, complex connecting process and short service life of the prior art. The invention adopts a mode of overlapping and combining a plurality of layers of ultrathin metal films, improves the strength of the film assembly and reduces the comprehensive rigidity of the films; the contact areas of the diaphragm hard core, the compression screw and the metal diaphragm are different, and the comprehensive rigidity of the diaphragm assembly can be adjusted by changing the contact area size and the contact ratio of the diaphragm hard core, the compression screw and the diaphragm, so that the diaphragm assembly is suitable for pressure sensing elements under different working conditions.
Description
Technical Field
The invention relates to a metal diaphragm pressure sensing element, in particular to a diaphragm pressure sensing element which is applicable to high pressure, ultralow temperature and long service life.
Background
The diaphragm is used as a driving element to convert pressure into linear motion, and is widely applied to valves. The diaphragm is divided into a metal diaphragm and a nonmetal diaphragm according to materials, and the nonmetal diaphragm has large stroke and good fatigue resistance, but has lower strength and low applicable working pressure. The metal diaphragm has higher relative strength, is suitable for high-pressure working conditions, and is also generally selected in low-temperature environments. However, the rigidity of the metal diaphragm has great influence on the valve characteristics and the precision, the strength and the rigidity of the existing metal diaphragm are generally in a direct proportion relation, the higher the strength and the larger the rigidity are, otherwise, the strength of the diaphragm can be reduced to effectively reduce the rigidity of the diaphragm, but the use condition is greatly limited, meanwhile, the existing metal diaphragm is generally connected with a structural member in a welding mode, the connection process is complex, the welding process is greatly influenced by environmental factors, and the problem of short heated hardening life exists.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the high-strength variable-rigidity diaphragm assembly is provided, and the defects of small application range, complex connecting process and short service life in the prior art are overcome.
The technical scheme of the invention is as follows: the utility model provides a variable rigidity diaphragm subassembly of high strength which characterized in that: the sealing device comprises a membrane hard core, a compression screw, a sealing gasket and a plurality of layers of metal membranes, wherein a small hole is formed between the plurality of layers of metal membranes and the sealing gasket, the compression screw penetrates through the small hole from one side of the sealing gasket to be fixedly connected with the membrane hard core, and the plurality of layers of metal membranes and the sealing gasket are compressed to form sealing.
Preferably, the multi-layer metal film is formed by superposing 2-5 layers of flat films or corrugated films with the thickness smaller than 0.1 mm.
Preferably, the end face of the compression screw, which is in contact with the multilayer metal membrane, is provided with a whole circle of V-shaped sealing groove.
Preferably, the compression screw is in threaded connection with the hard core of the diaphragm, and 6 punching points are uniformly distributed at the threaded joint part.
Compared with the prior art, the invention has the advantages that:
1) The invention adopts a mode of overlapping and combining a plurality of layers of ultrathin metal films, improves the strength of the film assembly and reduces the comprehensive rigidity of the films.
2) The invention simplifies the production and assembly processes of the diaphragm assembly by adopting the mode of threaded connection and non-metal sealing gasket sealing, and is more suitable for mass production.
3) The compression screw is provided with a whole circle of V-shaped sealing groove, so that the sealing reliability of the diaphragm is improved.
4) According to the invention, the contact areas of the diaphragm hard core and the compression screw with the metal diaphragm are different, and the comprehensive rigidity of the diaphragm assembly can be adjusted by changing the contact area size and the contact area ratio of the diaphragm hard core and the compression screw with the diaphragm, so that the diaphragm assembly is suitable for pressure sensing elements under different working conditions.
Drawings
FIG. 1 is a schematic illustration of a high strength variable stiffness diaphragm assembly of an embodiment;
FIG. 2 is a schematic drawing of a punch point at the threaded junction of a compression screw and a diaphragm hard core according to an embodiment;
fig. 3 is a schematic view of the structure of the compression screw of the embodiment.
In the figure, a 1-diaphragm hard core, a 2-compression screw, a 3-sealing gasket, a 4-multi-layer metal diaphragm, a 5-punching point and a 6-sealing groove.
Detailed Description
The present invention will be described in detail with reference to specific embodiments and drawings.
As shown in fig. 1, the embodiment provides a high-strength variable stiffness membrane assembly, which is composed of a membrane hard core 1, a compression screw 2, a sealing gasket 3 and a plurality of layers of metal membranes 4, wherein the plurality of layers of metal membranes 4 adopt a mode of overlapping and combining 3 layers of ultrathin metal membranes with the thickness smaller than 0.1mm, the metal membranes are flat membranes or corrugated membranes, a small hole is formed between the plurality of layers of metal membranes 4 and the sealing gasket 3, the plurality of layers of metal membranes 4 and the sealing gasket 3 are connected together through the compression screw 2 and the membrane hard core 1, the metal membranes 4 and the sealing gasket 3 are compressed to form a seal by a method of controlling the tightening torque, anaerobic adhesive is coated at the screw thread position of the compression screw to prevent loosening during tightening, and a punching mode is adopted at the screw thread joint position of the compression screw and the membrane hard core after tightening, so that loosening of threads is further prevented, and the reliability of connection is ensured.
The schematic diagram of the punching points at the screw thread joint position of the compression screw and the diaphragm hard core in the embodiment is shown in fig. 2, and 6 punching points 5 are uniformly distributed at the screw thread joint position.
The schematic structure of the compression screw in the embodiment is shown in fig. 3, and a circle of sealing groove 6 is arranged on the compression screw 2, so that the sealing reliability of the diaphragm is further improved.
In the use process, through changing the area ratio and the size of the hard core of the diaphragm and the compression screw, the comprehensive rigidity of the diaphragm assembly can be adjusted, and the diaphragm assembly is suitable for pressure sensing elements under different working conditions, namely, when the area ratio of the hard core of the diaphragm and the compression screw is fixed, the larger the area is, the larger the comprehensive rigidity of the diaphragm assembly is, otherwise, the smaller the area is, and the smaller the comprehensive rigidity of the diaphragm assembly is. The diaphragm assembly has the advantages of high strength, adjustable rigidity, simple connection mode, long service life and the like, and can be used as a pressure sensing element in fluid mechanical equipment. Meanwhile, the assembly is simple in structure, good in processing and assembling manufacturability and suitable for mass production.
Claims (3)
1. A high strength variable stiffness diaphragm assembly, characterized by: the sealing device comprises a membrane hard core, a compression screw, a sealing gasket and a plurality of layers of metal membranes, wherein a small hole is formed between the plurality of layers of metal membranes and the sealing gasket;
the thread of the compression screw is coated with anaerobic adhesive for preventing loosening, and a punching point loosening prevention structure is arranged at the joint of the compression screw and the hard core thread of the diaphragm;
the contact areas of the membrane hard core and the compression screw with the metal membrane are different, and the comprehensive rigidity of the membrane assembly is regulated by changing the contact area size and the contact ratio of the membrane hard core and the compression screw with the membrane;
the multi-layer metal membrane is formed by superposing 2-5 layers of flat membranes or corrugated membranes with the thickness smaller than 0.1 mm.
2. The high strength variable stiffness diaphragm assembly of claim 1, wherein: the end face of the compression screw, which is contacted with the multilayer metal membrane, is provided with a whole circle of V-shaped sealing groove.
3. The high strength variable stiffness diaphragm assembly of claim 1 or 2, wherein: the compression screw is in threaded connection with the membrane hard core, and 6 punching points are uniformly distributed at the threaded joint part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611109799.3A CN106704677B (en) | 2016-12-06 | 2016-12-06 | High-strength variable-rigidity diaphragm assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611109799.3A CN106704677B (en) | 2016-12-06 | 2016-12-06 | High-strength variable-rigidity diaphragm assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704677A CN106704677A (en) | 2017-05-24 |
| CN106704677B true CN106704677B (en) | 2023-05-30 |
Family
ID=58937418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611109799.3A Active CN106704677B (en) | 2016-12-06 | 2016-12-06 | High-strength variable-rigidity diaphragm assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704677B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664354B (en) * | 2020-12-10 | 2022-07-05 | 西安航天动力研究所 | Differential type isolation diaphragm valve and multi-propellant parallel liquid supply system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201934765U (en) * | 2010-12-29 | 2011-08-17 | 北京宇航系统工程研究所 | Multi-layer metal mebrane sensitive device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3469331B2 (en) * | 1994-10-17 | 2003-11-25 | 株式会社フジキン | Seal structure of the inner peripheral edge of a metal diaphragm |
| CN2242874Y (en) * | 1995-09-12 | 1996-12-18 | 冶金工业部安全环保研究院 | Decompression device for anti-explosion diaphragm |
| CN201107146Y (en) * | 2007-07-12 | 2008-08-27 | 珠海三德艺电子有限公司 | Diaphragm type pressure gauge |
| CN101893100A (en) * | 2010-06-23 | 2010-11-24 | 兰州理工大学温州泵阀工程研究院 | Antibiotic valve |
| CN205027475U (en) * | 2015-10-21 | 2016-02-10 | 北京布莱迪仪器仪表有限公司 | Exceed press mold piece table |
| CN206310038U (en) * | 2016-12-06 | 2017-07-07 | 西安航天动力研究所 | A kind of high intensity stiffness variable diaphragm unit |
-
2016
- 2016-12-06 CN CN201611109799.3A patent/CN106704677B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201934765U (en) * | 2010-12-29 | 2011-08-17 | 北京宇航系统工程研究所 | Multi-layer metal mebrane sensitive device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106704677A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102037260B (en) | Metal gasket | |
| CN106704677B (en) | High-strength variable-rigidity diaphragm assembly | |
| CN106872170B (en) | Magnitude of interference for bearing installation simulates fixture | |
| CN110985783B (en) | Flexible graphite metal corrugated tooth composite gasket sealing structure | |
| CN206377366U (en) | A kind of oil connection | |
| CN206310038U (en) | A kind of high intensity stiffness variable diaphragm unit | |
| CN104633324B (en) | Pipe spherical joint reinforcement sealing structure | |
| CN202937808U (en) | Fuel oil sealing washer with polytetrafluoroethylene coatings | |
| CN201837296U (en) | Air cooler channel box with multiple sealing | |
| CN204692297U (en) | For the non-metallic gasket sealed | |
| CN103121203B (en) | High-pressure sealing device O-shaped rubber ring and wriggling assembly method of check ring | |
| CN209943728U (en) | Can dismantle and embrace a tub sealing connection structure | |
| CN209960092U (en) | Novel emergency leaking stoppage staple bolt | |
| WO2016065651A1 (en) | Pipe fitting for pipeline connection | |
| CN203227935U (en) | Novel structure for reducing welding deformation of oil inlet/outlet of hydraulic cylinder | |
| CN202280857U (en) | Half-cone-shaped plate gate valve | |
| CN2799997Y (en) | Two-way PTFE seal butterfly valve | |
| EP2083204B1 (en) | Hydraulic coupling | |
| CN211901563U (en) | Thread sealing structure | |
| CN218494180U (en) | Bolt connection structure with sealing function | |
| CN114233970A (en) | Connecting piece of standard flared pipe, preparation method of connecting piece and standard flared pipe | |
| CN103322355B (en) | Metallic soft-contact connector for air brake hose connection | |
| CN106763832B (en) | Rubber diaphragm combined valve core | |
| CN211715860U (en) | Novel damping formula petrochemical industry pipeline valve | |
| CN202992303U (en) | High-strength composite membrane for pressure-reducing valve, and membrane component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |