CN204177523U - Pressure transducer load limit protective device - Google Patents
Pressure transducer load limit protective device Download PDFInfo
- Publication number
- CN204177523U CN204177523U CN201420593673.8U CN201420593673U CN204177523U CN 204177523 U CN204177523 U CN 204177523U CN 201420593673 U CN201420593673 U CN 201420593673U CN 204177523 U CN204177523 U CN 204177523U
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- diaphragm
- pressure
- limit
- tonnage
- convex platform
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Abstract
The utility model relates to a kind of pressure transducer load limit protective device, comprise Pressure sensing part and limit for tonnage protection part, its Pressure sensing part is welded by pressure inlet (1) and diaphragm (2), diaphragm (2) is designed with upper and lower two boss (2-1,2-2), strainometer (5) is pasted onto and diaphragm 2 forms the pressure medium change that diaphragm (2) experiences by electric bridge and be converted to electric signal, and is transmitted by wire (6); Limit for tonnage protection part is made up of gland (3) and set nut (4), by the gap delta accurately controlled pressure limit for tonnage value between adjustment diaphragm 2 convex platform and gland 3.The utility model is improved on existing sensor integration, and pressure-sensitive parts diaphragm 2 adopts upper and lower two boss design, and convex platform is used for limit for tonnage protection; the design of lower convex platform, improves the compressive resistance of diaphragm, and cavity size is less simultaneously; manufacturing process is simple, and cost is low.
Description
Technical field
The utility model belongs to pressure transducer manufacturing technology field, is specifically related to need the pressure transducer of accurate controlled pressure limit for tonnage value and demand fulfillment high overload simultaneously.
Background technology
Pressure transducer has a lot of parameter index, wherein has one to be overload protection, and overload is exactly that load is excessive, has exceeded the nominal load of sensor itself, and sensor construction will be caused to damage; Even if overload protection load has exceeded the situation that nominal load also there will not be damage, but also have a degree, be generally rated pressure 150% scope in, and can not sustained overload work.
Pressure transducer has a lot of form; the overload protection method for designing of often kind of version is also different; numerous method has respective merits and demerits; when designing overload protection; the methods such as general employing boss realize; but this structure generally has a significant limitation to be exactly that cavity size is comparatively large, adds the complexity of manufacturing process, improves production cost.
Overload protection often kind sensor all will be considered; because in use may occur that measured value is greater than the situation of range; only devise the sensor of overload protection, in following use procedure, just there will not be situation about damaging due to overload, could use more of a specified duration.
Goal of the invention
The utility model is designed by pressure transducer special construction, and solve existing pressure sensor overload protection device accurately limit for tonnage can not need the use occasion of high overload simultaneously.Namely be exactly: accurately measure in pressure limit at needs, normal operation of sensor, and to different service pressure values, can be met the demands by adjustment; When exceeding this pressure, sensor carries out limit for tonnage protection, and can bear high overload, the highest bear overload 7 times rated pressure and can long-term work.
Technical solution
The technical solution adopted in the utility model: pressure transducer load limit protective device, comprise Pressure sensing part and limit for tonnage protection part, it is characterized in that Pressure sensing part is welded by pressure inlet and diaphragm, diaphragm design has upper and lower two boss, strainometer is pasted onto and diaphragm forms the pressure medium change that diaphragm experiences by electric bridge and be converted to electric signal, and is transmitted by wire; Limit for tonnage protection part is made up of gland and set nut, by the gap delta accurately controlled pressure limit for tonnage value between adjustment diaphragm convex platform and gland.
The utility model beneficial effect:
1, the design of this device, existing sensor integration is improved, and pressure-sensitive parts diaphragm adopts upper and lower two boss design; convex platform is used for limit for tonnage protection, and the design of lower convex platform, improves the compressive resistance of diaphragm; cavity size is less simultaneously, and manufacturing process is simple, and cost is low.
2, the design of this device, because the gap between diaphragm convex platform and gland is adjustable, make to need the pressure limit for tonnage value of accurately control adjustable, scope is wide, instead of single fixing pressure limit for tonnage value.
3, the design of this device; when pressure medium value exceedes limit for tonnage value; diaphragm boss and gland are adjacent to; set nut and pressure inlet screwed tight simultaneously; diaphragm not redeformation; play overload protective function, the highest bear overload 7 times rated pressure overload and can long-term work, considerably beyond the overload level of general pressure transducer rated pressure 150%.
Accompanying drawing explanation
Fig. 1 is pressure transducer load limit protective device structural drawing.
Embodiment
As shown in Figure 1, pressure transducer load limit protective device comprises Pressure sensing part and limit for tonnage protection part.Pressure sensing part is formed by pressure inlet 1 and diaphragm 2 argon arc welding, and impression needs the pressure medium measured, and diaphragm 2 is designed with upper and lower two boss 2-1,2-1, and convex platform is used for the protection of pressure limit for tonnage, and lower convex platform can improve the intensity of diaphragm 2, improves overload capacity.By the distortion of diaphragm 2, experience the change of pressure, then by the electric bridge that the strainometer 5 be pasted onto on diaphragm 2 forms, the pressure medium experienced by diaphragm 2 change is converted to electric signal, is transmitted by wire 6.Limit for tonnage protection part is made up of gland 3 and set nut 4.By the gap delta between adjustment diaphragm 2 convex platform and gland 3, can accurately controlled pressure limit for tonnage value (for different limit for tonnage force value, can be met the demands by the gap delta between adjustment diaphragm 2 convex platform and gland 3), when pressure medium value exceedes this value, diaphragm 2 convex platform and gland 3 are adjacent to, set nut 4 and pressure inlet 1 screwed tight simultaneously, diaphragm 2 not redeformation, plays limit for tonnage effect; The structural design of diaphragm 2 lower convex platform adds the compressive resistance of diaphragm simultaneously, can play high overload protective effect.
Principle of work:
(see accompanying drawing 1) medium enters cavity by pressure inlet 1, and diaphragm 2 experiences the change of pressure, and produce distortion, the electric bridge be made up of the strainometer 5 be pasted onto on diaphragm, changes pressure signal into electric signal, is transmitted by wire 6; Simultaneously diaphragm 2 is out of shape on boss and moves, by the gap delta between adjustment diaphragm 2 convex platform and gland 3, and can accurately controlled pressure limit for tonnage value; Arrive this pressure limit for tonnage value, gap delta value is zero, and namely diaphragm 2 boss and gland 3 are adjacent to, and simultaneously due to set nut 4 and pressure inlet 1 screwed tight, when pressure medium value exceedes this value, diaphragm 2 also not redeformation, plays overload protective function.
In practical application: a pressure transducer measured for water depth pressure, rated pressure is 0.6MPa (being equivalent to 60 meters of depth of waters), require normally to work under 0.6MPa pressure, limit for tonnage is carried out during 0.65MPa ± 0.2MPa pressure, ensure that most high overload pressure is 4.3MPa (being equivalent to 430 meters of depth of waters, i.e. the rated pressure of 7 times) simultaneously.Employing said structure designs, by grinding diaphragm 2 convex platform and gland 3 end face, the gap delta between diaphragm 2 convex platform and gland 3 can be adjusted, limit for tonnage force value is accurately controlled within the scope of 0.65MPa ± 0.2MPa, meet normal job requirement (for different limit for tonnage force value, such as require to carry out limit for tonnage during 0.80MPa ± 0.2MPa pressure, can be met the demands by the gap delta expanded between adjustment diaphragm 2 convex platform and gland 3); Simultaneously because diaphragm 2 adopts upper and lower two boss design, when pressure is more than 0.65MPa, diaphragm 2 convex platform and gland 3 are adjacent to, diaphragm 2 not redeformation, plays limit for tonnage effect, simultaneously due to diaphragm 2 lower convex platform structural design, improve the compressive resistance of diaphragm 2, ensure that being loaded onto pressure was 4.3MPa and does not damage, and can work long hours, met the requirement of high overload.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent application claims scope change or modify, and are included within the scope of the utility model patent application claims.
Claims (1)
1. pressure transducer load limit protective device, comprise Pressure sensing part and limit for tonnage protection part, it is characterized in that Pressure sensing part is welded by pressure inlet (1) and diaphragm (2), diaphragm (2) is designed with upper and lower two boss (2-1), (2-2), strainometer (5) is pasted onto diaphragm (2) the pressure medium change that above diaphragm (2) is experienced by composition electric bridge and is converted to electric signal, and is transmitted by wire (6); Limit for tonnage protection part is made up of gland (3) and set nut (4), by the gap delta accurately controlled pressure limit for tonnage value between adjustment diaphragm (2) convex platform and gland (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420593673.8U CN204177523U (en) | 2014-10-14 | 2014-10-14 | Pressure transducer load limit protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420593673.8U CN204177523U (en) | 2014-10-14 | 2014-10-14 | Pressure transducer load limit protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177523U true CN204177523U (en) | 2015-02-25 |
Family
ID=52566329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420593673.8U Expired - Fee Related CN204177523U (en) | 2014-10-14 | 2014-10-14 | Pressure transducer load limit protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204177523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316255A (en) * | 2014-10-14 | 2015-01-28 | 秦川机床集团宝鸡仪表有限公司 | Loading limit protection device of pressure sensor |
| CN108955993A (en) * | 2018-05-23 | 2018-12-07 | 易彩科技（杭州）有限责任公司 | A kind of ductwork pressure transmitter of super low-power consumption |
-
2014
- 2014-10-14 CN CN201420593673.8U patent/CN204177523U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316255A (en) * | 2014-10-14 | 2015-01-28 | 秦川机床集团宝鸡仪表有限公司 | Loading limit protection device of pressure sensor |
| CN108955993A (en) * | 2018-05-23 | 2018-12-07 | 易彩科技（杭州）有限责任公司 | A kind of ductwork pressure transmitter of super low-power consumption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20201014 |