CN201724771U - Elastic element of pressure transmitter - Google Patents
Elastic element of pressure transmitter Download PDFInfo
- Publication number
- CN201724771U CN201724771U CN2010202934075U CN201020293407U CN201724771U CN 201724771 U CN201724771 U CN 201724771U CN 2010202934075 U CN2010202934075 U CN 2010202934075U CN 201020293407 U CN201020293407 U CN 201020293407U CN 201724771 U CN201724771 U CN 201724771U
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- CN
- China
- Prior art keywords
- diaphragm
- elastic element
- fluid conduit
- pressure transmitter
- plane
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to an elastic element of a pressure transmitter, comprising an elastic element body. The strain region of the elastic element body is provided with a diaphragm, one side of the diaphragm is a plane, and the other side thereof is provided with a concave plane with a circular arc chamfer. A fluid conduit on the pressure transmitter is arranged at one side of the concave plane, and the plane side of the diaphragm is provided with at least one silicon strain gage. The utility model has simple structure, low cost and long service life and is beneficial to improving the sensitivity, the linear stability degree and measuring precision of the pressure transmitter.
Description
Technical field
The utility model relates to a kind of elastic element of pressure transmitter.
Background technology
Pressure unit is a kind of transmitter commonly used in the industrial practice, is widely used in various industrial automatic control environment.Intelligent pressure transmitter is little because of the volume of its silicon foil gauge, and commercial foil gauge has plurality of specifications available, and form that can the flexible design elastic sensing element, to adapt to various application scenarios, uses more extensive.Tradition strain-type pressure unit elastic sensing element is a fixedly circular metal flat diaphragm of periphery, it is fixed by welding on the catheter pressure, flat diaphragm and tube wall in vertical state, the junction structural strain is very big, is typical stress concentration point, when pressure-loaded is on flat diaphragm, the circumference of flat diaphragm can produce stress and concentrate, and test result is produced than mistake, when the stress concentration phenomenon is serious, may damage diaphragm and foil gauge, pressure unit is thoroughly scrapped.
The utility model content
The purpose of this utility model provides a kind of simple in structure, and cost is low, and long service life helps improving the elastic element of pressure transmitter of pressure unit sensitivity, linear degree of stability and measuring accuracy.
The purpose of this utility model is achieved through the following technical solutions: it comprises the flexible member body, described flexible member body strain regions is provided with diaphragm, described diaphragm one side is the plane, opposite side is the concave plane that is provided with band circular arc chamfering, fluid conduit systems on the pressure unit is located at concave plane one side, and the diaphragm plane side is provided with at least one silicon foil gauge.
The radius of described fluid conduit systems is 1:7.5 with the ratio of the radius of circular arc chamfering.
Described silicon foil gauge links to each other with the circuit board of pressure unit by binding line, and the outlet of being located at the fluid conduit systems of diaphragm concave plane side links to each other with the damper of pressure unit.
Circular arc chamfering on the diaphragm has following effect: on the one hand, make with the contact area increase of fluid conduit systems, thereby to help improving the integrally-built intensity of diaphragm by diaphragm edge structure thickening; On the other hand, make and have structural mitigation transition between diaphragm and the fluid conduit systems inwall.
During work, detected fluid enters fluid conduit systems by damper, the fluid that enters fluid conduit systems inside has certain pressure, it acts on the diaphragm groove side, deformation takes place in diaphragm under fluid pressure action, the current potential of the silicon foil gauge of diaphragm plane side changes, and produces electric signal, and electric signal is sent to the actual pressure data that change test fluid flow after the PLC central processing unit that links to each other with circuit board is handled into by the circuit board of pressure unit.Because the existence of diaphragm circular arc chamfering, form structural mitigation transition between diaphragm and the fluid conduit systems inwall, when fluid acts on the transducer diaphragm, diaphragm and fluid conduit systems inwall junction can not produce stress and concentrate, thereby make the sensitivity that helps improving pressure unit, linear degree of stability and measuring accuracy.
The utility model is simple in structure, and cost is low, and long service life helps improving pressure unit sensitivity, linear degree of stability and measuring accuracy.
Description of drawings
Fig. 1 is assemblied in the structural representation of pressure unit for the utility model flexible member;
Fig. 2 is the I place structure for amplifying synoptic diagram of Fig. 1;
Fig. 3 is the planar side structural representation of flexible member strain regions diaphragm.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
With reference to Fig. 1,2, present embodiment comprises flexible member body 9, described flexible member body 9 strain regions are provided with diaphragm 1, described diaphragm 1 one sides are plane 4, opposite side is the concave plane 2 that is provided with band circular arc chamfering 3, fluid conduit systems 8 on the pressure unit is located at concave plane 2 one sides, and the radius of fluid conduit systems 8 is 1:7.5 with the ratio of the radius of circular arc chamfering 3, and diaphragm 1 planar side is provided with two silicon foil gauges 11.
Described silicon foil gauge 11 links to each other with the circuit board 6 of pressure unit by binding line 7, and the outlet of being located at the fluid conduit systems 8 of diaphragm 1 concave plane side links to each other with the damper 10 of pressure unit.
Circular arc chamfering 3 on the diaphragm 1 has following effect: on the one hand, make with the contact area increase of fluid conduit systems 8, thereby to help improving diaphragm 1 integrally-built intensity by diaphragm 1 marginal texture thickening; On the other hand, make and have structural mitigation transition between diaphragm 1 and fluid conduit systems 8 inwalls.
During work, detected fluid enters fluid conduit systems 8 by damper 10, the fluid that enters fluid conduit systems 8 inside has certain pressure, it acts on diaphragm 1 groove side, deformation takes place in diaphragm 1 under fluid pressure action, the current potential of the silicon foil gauge 11 of diaphragm 1 planar side changes, and produces electric signal, and electric signal is sent to the actual pressure data that change test fluid flow after the PLC central processing unit 5 that links to each other with circuit board 6 is handled into by the circuit board 6 of pressure unit.Because the existence of diaphragm 1 circular arc chamfering 3, form structural mitigation transition between diaphragm 1 and fluid conduit systems 8 inwalls, when fluid acts on the transducer diaphragm 1, diaphragm 1 can not produce stress with fluid conduit systems 8 inwall junctions and concentrate, thereby makes the sensitivity that helps improving pressure unit, linear degree of stability and measuring accuracy.
Claims (3)
1. elastic element of pressure transmitter, comprise the flexible member body, described flexible member body strain regions is provided with diaphragm, it is characterized in that, described diaphragm one side is the plane, opposite side is the concave plane that is provided with band circular arc chamfering, and the fluid conduit systems on the pressure unit is located at concave plane one side, and the diaphragm plane side is provided with at least one silicon foil gauge.
2. elastic element of pressure transmitter according to claim 1 is characterized in that, the radius of described fluid conduit systems is 1:7.5 with the ratio of the radius of circular arc chamfering.
3. elastic element of pressure transmitter according to claim 1 and 2 is characterized in that, described silicon foil gauge links to each other with the circuit board of pressure unit by binding line, and the outlet of being located at the fluid conduit systems of diaphragm concave plane side links to each other with the damper of pressure unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202934075U CN201724771U (en) | 2010-08-17 | 2010-08-17 | Elastic element of pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202934075U CN201724771U (en) | 2010-08-17 | 2010-08-17 | Elastic element of pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201724771U true CN201724771U (en) | 2011-01-26 |
Family
ID=43493108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202934075U Expired - Lifetime CN201724771U (en) | 2010-08-17 | 2010-08-17 | Elastic element of pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201724771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929901A (en) * | 2010-08-17 | 2010-12-29 | 陈旭财 | Elastic element of pressure transmitter |
| CN111426414A (en) * | 2020-06-10 | 2020-07-17 | 南京沃天科技有限公司 | Pressure transmitter base with gluing boss |
-
2010
- 2010-08-17 CN CN2010202934075U patent/CN201724771U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929901A (en) * | 2010-08-17 | 2010-12-29 | 陈旭财 | Elastic element of pressure transmitter |
| CN111426414A (en) * | 2020-06-10 | 2020-07-17 | 南京沃天科技有限公司 | Pressure transmitter base with gluing boss |
| CN111426414B (en) * | 2020-06-10 | 2020-10-20 | 南京沃天科技有限公司 | Pressure transmitter base with gluing boss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110126 Effective date of abandoning: 20110831 |